WenmarOpen by Wenmar Pro

Service bulletins for the 2008 Chevrolet Express

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

1086 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
00-06-01-012E2018-05-21. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. This information bulletin provides the technician the information on how to properly clean a metal surface using the correct tool.
14-06-04-0052018-05-21. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. This information bulletin advises of a new tool used to aid in installing Duramax glow plugs.
PIP5163C2018-05-21. Service bulletin. ENGINE. This Preliminary Information communication provides information to the technician about engine block of possible cylinder bore damage, scoring or out of round as the possible cause of engine oil consumption, misfire, cylinder leakage or blow by. Technician will need to inspect the engine for Cylinder damage or scoring, An out of round cylinder bore, Dirt intrusion, and Catalytic Converter failure.
02-06-01-027D2018-05-21. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. This informational bulletin provides information on higher then expected oil consumption.
11-06-04-007C2018-05-21. Service bulletin. ENGINE AND ENGINE COOLING. This technical bulletin provides a procedure for replacing the throttle position sensor cover for concerns regarding a indicator lamp illuminated reduced power message displayed and DTC P2135 set.
15-00-90-0012018-05-07. Service bulletin. ENGINE AND ENGINE COOLING. This informational bulletin provides technicians with diagnostic tips for preventing oil leaks after changing oil and filter.
PIP5232A2018-05-07. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. This Preliminary Information communication provides information to the technician about gasoline powered cars, mid-size trucks, light duty trucks, and heavy duty trucks with premature catalytic converter failures. It is recommended to inspect for a poor crimp on the grounds ring terminal at the engine block for the bank with the concern and repair the wire.
PIP52322018-05-07. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. This Preliminary Information communication provides information to the technician about gasoline powered cars, mid-size trucks, light duty trucks, and heavy duty trucks with premature catalytic converter failures. It is recommended to inspect for a poor crimp on the grounds ring terminal at the engine block for the bank with the concern and repair the wire.
09-06-04-026G2018-04-23. Service bulletin. ENGINE; POWER TRAIN. This informational bulletin provides information of suspected tampering or vehicle modifications for non-GM (Aftermarket) engine and transmission calibrations for V6 and V8 gasoline engines Using Tech 2® or global diagnostic system 2 (GDS 2)
150089005A2018-04-23. Service bulletin. EQUIPMENT; ENGINE. This warranty administration bulletin provides dealership personnel with policy and procedure requirements for essential tools that include consumable parts (U.S. Only).
PIP5226B2018-02-21. Service bulletin. ENGINE. This Preliminary Information communication provides information to the technician about finding needle bearings during an oil change. Technician will gain access to the roller rockers to inspect them. Only replace the roller rocker that is missing needle bearings. Be sure to clean the oil drains to retrieve the needle bearings. Each roller rocker has 66 bearings.
PIP5540A2018-02-21. Service bulletin. ENGINE. This Preliminary information communicates to the technician the need to inspect the induction system for potential icing issues in very cold ambient temperatures. To allow the ice to melt so that it can be drained from the related components. That any of the listed DTC's may set with or without poor engine performance.
PIP4578B2018-01-16. Service bulletin. ENGINE AND ENGINE COOLING. This PI was superseded to update model years and add information concerning idle surge, reduced engine power mode, and/or DTCs P0068, P0121, P1516, P2101, P2119, and/or P2176 that may be experienced on high mileage vehicles. Please discard PIP4578.
01-06-01-011I2017-12-22. Service bulletin. ENGINE AND ENGINE COOLING. This informational bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
06-06-01-007I2017-12-22. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, DIESEL. This informational bulletin provides information to dealership personnel on identifying Duramax Diesel overpower engine breakdown or non-function due to aftermarket power-up devices vs. non overpower engine non-function of pistons, cylinders, valve train components, and DTC P003A or P111D set.
PI0652B2017-12-22. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. This preliminary informational bulletin provides technicians with repair information on removing seized exhaust temperature sensors.
PI0653C2017-12-22. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. This preliminary informational bulletin provides dealership personnel with policies and procedures regarding damaged, disassembled or improperly packaged turbochargers returned to Warranty Part Center.
00-06-01-026H2017-12-22. Service bulletin. ENGINE. This informational bulletin provides information on intake manifold inspection/replacement after severe internal engine damage.
GCUS-3-2892017-11-17. Service bulletin. ENGINE. 14287 - Customer Satisfaction Program. On certain 2003-2015 model year Chevrolet Express, 2003-2007 Chevrolet Silverado, 2008-2013 Chevrolet Silverado HD, 2003-2015 GMC Savana, 2003-2007 GMC Sierra 3500, and 2007-2012 GMC Sierra HD model vehicles equipped with a Duramax diesel engine and an engine-block heater (RPO YF2 and K05), continuously activating the engine-block heater through Ambulance body up fit ?shore power? may cause excessive heat buildup, cause a high-resistance short, damage the engine-block heater, or, in rare cases, melt electrical connections or cause an engine-compartment fire. Dealers are to: Replace block heater element with a revised heater equipped with EPDM O-Rings, shorter bolt and improved torque & angle. Disconnect the coolant heater from being powered whenever ?shore power? is plugged in. Add a label to the current cord, ?Avoid continuous use, for Cold Start Only?, unless the cord is damaged at either end, then replace the original cord. Provide the customer with an Owner?s Manual Insert found at the end of this bulletin.
PI0653D2017-10-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. This preliminary informational bulletin was created to inform Service Agents or Dealers, they may be charged back for parts and labor due to the turbo-chargers are being returned to the Warranty Parts center damaged, improperly assembled or missing parts and advising to properly package the complete turbochargers. (New models and RPOs added)
08-06-04-006K2017-10-12. Service bulletin. FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING:ENGINE:DIESEL. This informational bulletin provides information for Identifying Non-GM ECM Calibration Use and Power-up Hardware Detection in Duramax Diesel Engines - Photograph Tech 2 Calibration IDs, Calibration Verification Numbers (CVNs) and Transmission Data Screen
06-06-01-007G2017-10-12. Service bulletin. ENGINE AND ENGINE COOLING. This informational bulletin provides Information on Identifying Duramax Diesel Overpower Engine Breakdown/Non-Function Due to Aftermarket Power-Up Devices vs Non Overpower Engine Non-Function of Pistons, Cylinders, Valvetrain Components, DTC P003A or P111D Set
09-06-04-026E2017-10-12. Service bulletin. ENGINE AND ENGINE COOLING. This informational bulletin provides information on Identifying Non-GM (Aftermarket) Engine Calibrations for Gasoline Engines Using Tech 2 or GDS 2
03-06-04-017K2017-08-31. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER. This Informational Bulletin provides information on availability of Diesel Fuel additives.
PIP5232B2017-08-15. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. This Preliminary Information communication provides information to the technician about gasoline powered cars, mid-size trucks, light duty trucks, and heavy duty trucks with premature catalytic converter failures. It is recommended to inspect for a poor crimp on the grounds ring terminal at the engine block for the bank with the concern and repair the wire.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.