2007 Chevrolet SILVERADO 2500 Manufacturer communications & TSBs.Page 8
Original record summaries, dates and identifiers for this model-year. Records 701–800 of 1,118, ordered newest first. Dated records on this page: Jan 14, 2014–Jul 15, 2014.
Read the applicability before drawing a conclusion.
This archive includes service bulletins, warranty notices, software instructions and other communications. Records may repeat or supersede earlier instructions. A model-year association is not proof that a document covers every engine, trim, VIN or reported symptom, or that a repair is free.
NHTSA download snapshot: Sep 28, 2026. These are communication associations for this vehicle, not unique defects. How records are joined and counted.
Jul 15, 2014Service Bulletin/Repair Instructions
02-00-89-002M
NHTSA communication ID: 10138580
NHTSA source summary · Original PDF not reviewed by Recallfolio
This informational bulletin provides additional information to the technicians and how to submit a field product report.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This information for Warranty administration - Changes the Service Policy and Procedures Section 1.6.2.11 and list the requirements for the dealer to comply.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This information for Warranty administration - Changes the Service Policy and Procedures Section 1.6.2.11 and list the requirements for the dealer to comply.
NHTSA source summary · Original PDF not reviewed by Recallfolio
GENERAL MOTORS: DIAGNOSING POWER STEERING CONCERNS. IN RARE CASES, CUSTOMERS MAY COMMENT ON A LACK OF STEERING ASSIST WHEN STOPPED OR DURING PARKING LOT TYPE OF MANEUVERS. *JS UPDATED 09/02/14*LJ
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles with a "Service Charging System" message displayed on the Driver Information Center and/or a low voltage reading on the volt gauge during the first several minutes after a cold start. Technician may find a Diagnostic Trouble Code B15517 sym 03. If this concern only occurs during the first several minutes of a cold start, no repairs should be made. Dealer should communicate to the customer that this is normal operating characteristic of vehicles equipped with the diesel engine.
Source components: ELECTRICAL SYSTEM · ELECTRICAL SYSTEM:12V/24V/48V BATTERY.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This informational bulletin was created to aid the technician in diagnosing the difference between a shock or strut that has a fluid residule from a possible external source from a leaking shaft seal.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles that have water or dust from the openings under the bed rails near the stake pockets. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician of a complaint of a sag or hesitation when accelerating. The concern is present when coasting at low speeds of less than 15 miles per hour and then aggressively applying the throttle, or after making a hard stop followed by an aggressive throttle. This is considered normal operation of the vehicle the throttle is delayed and opened slowly up to .7 seconds to help minimize driveline lash and clunking or will have approximately .5 seconds of zero torque to allow the transmission to shift to first gear.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles that have not engagement into drive, delayed, no engagement into reverse, and or a range inhibit. Technician may find Diagnostic Trouble Codes P0701, P0731, P0732, P0733, P0734, P0736, P0751, P0756, P0761, P0776, P0843, P0848, P0873, P0877, P0894 or P2723. Technician should follow published Service Information diagnostics for Diagnostic Trouble Code P0701 first. Technician will also ensure the fluid level is at the top of the hot band when the transmission fluid temperature is 175° Fahrenheit. Diagnostic Trouble Codes P0701, P0731, P0732, P0733, P0734, P0736, P0751, P0756, P0761, P0776, P0843, P0848, P0873, P0877, P0894 or P2723 can set by the following fluid service/filter change, transmission service involving removing the pan, low fluid level caused by leaks, or after long periods of storage. If the fluid level has been properly checked using the HOT check procedure listed in Service Information document 2408059 and any of the Diagnostic Trouble Codes reset during a cold start inspect the internal suction filter for possible cracks. If no other concerns are found inspect for a stuck lube regulator valve in the pump cover due to debris.
Source components: FUEL SYSTEM, GASOLINE · POWER TRAIN.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This preliminary bulletin provides a procedure on how to reset the power folding mirriors after they been folded manually, to fix the customers concern of the mirriors shaking or fluttering at normal driving speeds.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This preliminary bulletin provides procedures on how to reset or refresh the XM radio receiver is the customers states that they only get a few channels.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles that may not receiving all channels on the XM band. Technician will need to use a scan tool and verify current Digital Radio Receiver Status under Data Display. Technician will need to look at the second line labeled Digital Radio Receiver Status will display a number of 00 - 04. Technician will repair per the status code.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles that may have reduced air flow from the Heater-Vent-Air Conditioning dash vents. Technician may find B3933 sym 05 set in the Heater-Vent-Air Conditioning control head. Technician will need to reprogram the Heater-Vent-Air Conditioning control head using Service Programming System.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician on the programming and activation of the OnStar system. For many 2008 and prior model year GM vehicles, the programming is performed using the Tech 2 and the activation is initiated by a Service Programming System. For the 2010 and UP model year vehicles, the OnStar set-up procedure and OnStar Activation request have been combined into a single programming event called OnStar Set-up and Activation in Service Programming System.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles that may have the check engine light, tow/haul, Supplemental Inflatable Restraint, cruise control or other various indicators or warning lamps will not come on in the instrument panel. Tech will need to the Tech 2 scan tool to command the instrument panel indicator lights on. If the light do not turn on technician should inspect (AUX HVAC) 10 amp fuse in the under-hood fuse block for open or high resistance.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles that for no reason the alarm will go active. Technician will need to use a scan tool to verify that the alarm was activated by the inclination sensor. If the trigger is the inclination sensor, inspect the sensor's mounting location. Technician will need to relocate the sensor if it is attached to the driver's side lower Heater-Vent-Air Conditioning duct. Technician will need to reinstall the sensor to the top of the Body Control Module bracket.
Source components: BACK OVER PREVENTION · BACK OVER PREVENTION: BACK-UP ALARM · ELECTRICAL SYSTEM · STRUCTURE.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles that have not engagement into drive, delayed, no engagement into reverse, and or a range inhibit. Technician may find Diagnostic Trouble Codes P0701, P0731, P0732, P0733, P0734, P0736, P0751, P0756, P0761, P0776, P0843, P0848, P0873, P0877, P0894 or P2723. Technician should follow published Service Information diagnostics for Diagnostic Trouble Code P0701 first. Technician will also ensure the fluid level is at the top of the hot band when the transmission fluid temperature is 175° Fahrenheit. Diagnostic Trouble Codes P0701, P0731, P0732, P0733, P0734, P0736, P0751, P0756, P0761, P0776, P0843, P0848, P0873, P0877, P0894 or P2723 can set by the following fluid service/filter change, transmission service involving removing the pan, low fluid level caused by leaks, or after long periods of storage. If the fluid level has been properly checked using the HOT check procedure listed in Service Information document 2408059 and any of the Diagnostic Trouble Codes reset during a cold start inspect the internal suction filter for possible cracks. If no other concerns are found inspect for a stuck lube regulator valve in the pump cover due to debris.
Source components: ELECTRICAL SYSTEM · POWER TRAIN.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This preliminary bulletin provides a procedure to install a new design upper intake manifold with a new MAP sensor relocated to prevent ice build up and setting code P0106.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This informational bulletin provides explanation on using the tire sealent in the GM kit as a temporary fix only untill the tire can be properly repaired under the new tire warranty.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This informational bulletin provides information for an available BCM calibrations that would restore bulb outages when using a second stage manufacturer
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles that have an OnStar system that will not power up. Technician should turn off the ignition and cancel retained accessory power. After the vehicle has powered down remove power to the OnStar module for five minutes. After the power has been removed for five minutes, if the OnStar system is working release the vehicle. If the OnStar system is still inoperative continue with published Service Information diagnostics.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about installing General Motors Accessory pats. Technician can check Service Information for some accessories. Technician can also contact Partect for assistance. Technician can also contact Techline Customer Support Center for programming issues.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This information bulletin provides the technician with additional information on fixing the vehicle right the first time by listing possible concerns to specific vehicles.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This preliminary bulletin provides a procedure to install a new cabin air filter kit for vehicles that did not have one if the customer whants one installed to fix the concern of dust intruding into cabin interior.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This informational bulletin is to inform dealers of an improved service strategy to aid in the replacement of hydraulic brake pipes, Customer Care and Aftersales (CCA) has released pre-formed and pre-flared hydraulic brake pipe kits.
Source components: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication advises the technician that the 2004-2007 Parallel Hybrid Truck parts will be placed on restriction through the General Motors Product Quality Center. Dealer will need to contact General Motors Product Quality Center for further assistance.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles that have an oil leak shortly after a cold start when extremely low ambient temperatures are present. Technician will need to clean the area of the oil leak, clean and dry the PCV hoses, and replace the oil fill cap with part number 12589430.
Source components: FUEL SYSTEM, OTHER:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles that may have a bump feel or clunk noise at a stop or on launch. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle. The bump clunk issue may be due to fuel movement in the fuel tank when not completely full. The condition is eliminated after completely filling the fuel tank.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles that the customer or up-fitter may have removed the rear bumper, install a different rear bumper, or add a different box/flat bed/cube box/hitch, etc. to the rear of the truck, which affects the rear park assist operation. Technician can disable the rear park assist for this concern.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles that have an oil leak shortly after a cold start when extremely low ambient temperatures are present. Technician will need to clean the area of the oil leak, clean and dry the PCV hoses, and replace the oil fill cap with part number 12589430.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles that when a Canadian customer may comment that when they travel to the United States, they are unable to connect to OnStar or use hands free calling. Dealer can advise the customer that the existing cell phone provider not having roaming agreements in areas outside of Canada. At this time, a customer has the option of contacting OnStar to have a 500 number loaded for OnStar operation while in the United States.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles that have a frequent "off route" messages while following Turn by Turn route. Technicians will need to remove power from the Vehicle Communication Interface Module for one hour and retest for the concern.
Source components: ELECTRICAL SYSTEM · EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM).
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about a customer?s request to install OnStar Bluetooth. Dealer should be advised at this time, there are no provisions to add this option to vehicles that were not built with it.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicles that may have an OnStar Turn-By-Turn Navigation the system that is inoperative. Technician verifies there are no Diagnostic Trouble Codes are present in the Antilock Braking System and Vehicle Communication Interface Module of the vehicle. If no Diagnostic Trouble Codes found call OnStar using the Blue button on the OnStar key pad and ask the advisor for a turn by turn route. Also make a OnStar personal call and a call into the vehicle. If normal diagnostics do not lead to a resolution technician will need to call General Motors Technical Assistance Center for further assistance.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This technical bulletin provides a procedure to install double sided tape to the windshield molding to correct the customers concern of a tapping or clicking noise at the winshield area.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles that have an OnStar system that will not power up. Technician should turn off the ignition and cancel retained accessory power. After the vehicle has powered down, remove power to the OnStar module for five minutes. After the power has been removed for five minutes, if the OnStar system is working release the vehicle. If the OnStar system is still inoperative continue with published Service Information diagnostics. Technician may need to contact General Motors Technical Assistance Center depending on the STID, Station ID, or OnStar Customer Identifier.
Source components: ELECTRICAL SYSTEM · ELECTRICAL SYSTEM:SOFTWARE.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles that have the OnStar system does not respond properly to some numbers and/or voice commands. Dealer should direct the customer to review the operational characteristics in the OnStar Users Guide.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This informational bulletin provides a process to the service agents that are not required to contact PQC, to determine when to replace a assembly as opposed to repairing and if an engine or transmission is being returned, that it has all the information in relation to that part being returned.
Source components: ENGINE · EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL · POWER TRAIN.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This technical bulletin provides a procedure to install a 3-5-rev clutch housing inspection and repair to correct the customers concern of Slips in Reverse or Third, Delayed Reverse or Drive Engagement and MIL on.
Source components: POWER TRAIN:CLUTCH ASSEMBLY:BELL HOUSING · POWER TRAIN:MANUAL TRANSMISSION.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles with a clunk type noise on start up with the vehicle in park when the vehicle is equipped Allison LCT1000 transmission. This condition is considered to be an operating characteristic of the Allison LCT1000 transmission.
Source components: POWER TRAIN:AUTOMATIC TRANSMISSION.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This informational bulletin provides technicians with ways to decrease the tire slipping on the rim and reduce to possible chances of the customers concerns over tire vibration are repair.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This technical bulletin provides a procedure on cleaning a leaking rim, to correct a customers concern of having a slow tire leak and low tire psi message on.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp. Technician may find Diagnostic Trouble Code P0442. Technician will need to review Techlink article from May 2013 titled "Using the Evaporative Emissions System Tester" Technician will need to follow these steps to help diagnose the issue. First after the P0442 has been verified do not disturb any of the fuel system components. The technician now can use the scan tool to close the Evaporative Emissions System. If possible change the tank pressure sensor units from inch_H2O to milimeter_Hg for better resolution. Now the vehicle can be stared to monitor the tank pressure sensor output value for approximately two minutes. If the tank pressure sensor value does change, pressurize the fuel tank side of the purge solenoid with the GE 41413-A / J 41413-A and the necessary adaptors. Now add smoke and allow pressure to stabilize for 2 minutes. If smoke is allowed to pass through the purge solenoid, replace the purge solenoid. If the tank pressure sensor value does not change, then install CH-48096 adaptor between the purge line from the canister and the purge solenoid. With the Evaporative Emissions System closed, pressurize the system through the CH-48096 adaptor and allow the system to completely stabilize, by observing the Press / Vac Gauge for a minimum of 5 minutes. Now add smoke to the system with GE 41413-A / J 41413-A after system stabilization. Now inspect the purge solenoid, engine side, fuel cap, canister vent solenoid filter and any line quick connects. When the leak is unable to be located, test under a vacuum condition. his type of leak may be detected by using the scan tool Purge/Seal function to create a vacuum in the Evaporative Emissions System and then observe the FTP sensor parameter for vacuum decay.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication advises the technician that the 2004-2007 Parallel Hybrid Truck parts will be placed on restriction through the General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician that General Motors and General Motors of Canada Company do not support cross border sales. The General Motors of Canada Customer Care Centre is the sole authorized provider of a certification confirmation letter which helps our customers identify if their vehicles meets the required USA regulatory standards necessary for importation into the USA.
NHTSA source summary · Original PDF not reviewed by Recallfolio
Slips in Reverse or Third, Delayed Reverse or Drive Engagement, DTC P0776, P2715,P2723, Harsh 2-3 Shifts (Inspect 1-2-3-4 / 3-5-R Housing and Pump Seal Rings)
NHTSA source summary · Original PDF not reviewed by Recallfolio
Refinishing Aluminum Wheels This bulletin updates General Motor's position on refinishing aluminum wheels. GM does not endorse any repairs that involve welding, bending, straightening o re-machining. Only cosmetic refinishing of the wheel's coatings, using recommended procedures, is allowed. Evaluating Damage In evaluating damage, it is the GM Dealer's responsibility to inspect the wheel for corrosion, scrapes, gouges, etc. The Dealer must insure that such damage is not deeper than what can be sanded or polished off. The wheel must be inspected for cracks. If cracks are found, discard the wheel. Any wheels with bent rim flanges must not be repaired or refinished. Wheels that have been refinished by an outside company must be returned to the same vehicle. The Dealer must record the wheel ID stamp or the cast date on the wheel in order to assure this requirement. Refer to Refinisher's Responsibility Outside Company later in this bulletin.
NHTSA source summary · Original PDF not reviewed by Recallfolio
Refinishing Aluminum Wheels This bulletin updates General Motor's position on refinishing aluminum wheels. GM does not endorse any repairs that involve welding, bending, straightening o re-machining. Only cosmetic refinishing of the wheel's coatings, using recommended procedures, is allowed. Evaluating Damage In evaluating damage, it is the GM Dealer's responsibility to inspect the wheel for corrosion, scrapes, gouges, etc. The Dealer must insure that such damage is not deeper than what can be sanded or polished off. The wheel must be inspected for cracks. If cracks are found, discard the wheel. Any wheels with bent rim flanges must not be repaired or refinished. Wheels that have been refinished by an outside company must be returned to the same vehicle. The Dealer must record the wheel ID stamp or the cast date on the wheel in order to assure this requirement. Refer to Refinisher's Responsibility Outside Company later in this bulletin.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This informational bulletin provides information for the dealer technician to gather as much information to help aid Engineers by completely filling out requested reports.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles that may have an issue when using Bluetooth voice recognition with an iPhone. Technician should work with the customer to insure the phone contacts to not have any Emojis loaded to any contact.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles that a driveline noise or vibration at various speeds and operating conditions. Technician should be advised that the vehicle should always be restored to a factory configuration when diagnosing noise and vibration concerns.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles that have a Diagnostic Trouble Code C0569 that will not clear. Technician should be advised if there are any issues with the rotational position sensor, incremental position sensor, encoder motor, motor A or B circuits, rotational position sensor or incremental position sensor circuits when the transfer case control module attempts to determine location the location cannot be determined correctly.
Source components: ELECTRICAL SYSTEM · ENGINE AND ENGINE COOLING.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician of a complaint of a sag or hesitation when accelerating. The concern is present when coasting at low speeds of less than 15 miles per hour and then aggressively applying the throttle, or after making a hard stop followed by an aggressive throttle. This is considered normal operation of the vehicle the throttle is delayed and opened slowly up to .7 seconds to help minimize driveline lash and clunking or will have approximately .5 seconds of zero torque to allow the transmission to shift to first gear.
Source components: POWER TRAIN:AUTOMATIC TRANSMISSION · POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication advises the technician that a noise or a vibration in the vehicle that seems to be abnormal may not have been there when the vehicle was purchased. Technician should look for Non - General Motors aftermarket accessories installed on the vehicle that can cause these issues.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles with a "Service Charging System" message displayed on the Driver Information Center and/or a low voltage reading on the volt gauge during the first several minutes after a cold start. Technician may find a Diagnostic Trouble Code B15517 sym 03. If this concern only occurs during the first several minutes of a cold start, no repairs should be made. Dealer should communicate to the customer that this is normal operating characteristic of vehicles equipped with the diesel engine.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Informational bulletin explains the warranty and policy exchange program for electronic devices and products, what can be approved by TAC and where the electronic parts can be returned to.
Source components: ELECTRICAL SYSTEM · EQUIPMENT · EQUIPMENT:ELECTRICAL.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This information was created to inform the technician that the 2-3 upshift and the 3-2 downshift clunk is caused by the releasing of the 2-4 band and application of the 3-4 clutch assembly during an upshift. Also during a 3-2 downshift, the releasing of the 3-4 clutch during the application of the 2-4 band, can cause torque reversal down the output shaft creating a clunk. This is a normal condition.
Source components: POWER TRAIN · POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER · POWER TRAIN:CLUTCH ASSEMBLY.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician that some vehicles may have a Service Engine Soon lamp, engine misfire on cylinder 1, 4, 6, or 7 and/or tick noise. Technician will follow service information diagnosis first. If service information diagnosis does not isolate the cause of this concern perform a cylinder deactivation active fuel management system compression test in service information. If the running compression of the misfiring cylinder stays below 25 Pounds per Square Inch regardless of the active fuel management solenoid being commanded on or off, an active fuel management lifter is mechanically collapsed/stuck or unlocking as soon as the engine is started. Replace all active fuel management lifters, and all plastic lifter guides. Also perform the cylinder deactivation active fuel management Valve Lifter Oil Manifold Diagnosis and Testing in Service Information. If it isolates a concern with the Valve Lifter Oil Manifold, replace it and reevaluate the concern. The active fuel management lifters can also be monitored for proper operation by carefully inspecting the cylinder 1, 4, 6, and 7 rockers and valves while cranking or briefly and safely running the engine with the valve covers removed. If the valve or valves of an active fuel management cylinder stop moving while doing this test, the active fuel management lifter is causing the concern. For 2008-2009 Full Size Truck/SUV or a 2007-2009 Chevrolet Tahoe with the Police Package reprogram the Engine Control Module. On the 2008-2009 Pontiac G8, 2010-2011 Camaro, and 2007-2010 Full Size Trucks with active fuel management, also determine if the active fuel management pressure relief valve shield that is listed in the latest version of 10-06-01-008 has ever been installed. On passenger cars with the LS4 engine, determine if the updated oil pan gasket that is listed in the latest version of 11-06-01-007 has been installed.
Source components: ENGINE AND ENGINE COOLING · ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER.