WenmarOpen by Wenmar Pro

Service bulletins for the 2004 Chevrolet Trailblazer

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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
15-08-73-001A2018-05-21. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This informational bulletin explains how to update the older Onstar module software to new software over GSA.
15-08-44-001I2018-05-21. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This informational bulletin provides information for the GM of Canada OnStar Cellular Communication Upgrade to 3G/4G LTE for vehicles that may need an upgrade.
06-08-47-001M2018-05-21. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This information bulletin explains the labor operation numbers used for submitting warranty claims and how to setup, and reprogram modules.
05-08-46-006S2018-05-21. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This informational bulletin advises the technician to update the Onstar from an analog system to a digital system if the customer wishes.
13-00-89-004I2018-05-21. Service bulletin. EQUIPMENT. This informational bulletin helps the technician quick reference repairs to bulletins as opposed to replacing parts that may be un necessary.
05-06-04-035D2018-05-21. Service bulletin. FUEL SYSTEM, GASOLINE. This informational bulletin provides the technician with information on what E85 fuel may due to a non E85 vehicle.
13-00-89-004G2018-05-21. Service bulletin. EQUIPMENT. This informational bulletin helps the technician quick reference repairs to bulletins as opposed to replacing parts that may be un necessary.
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.
00-00-89-027H2018-05-21. Service bulletin. EQUIPMENT. This informational bulletin provides information on what products GM has to aid in the eliminating unwanted odors in a vehicle.
10-00-89-006D2018-05-21. Service bulletin. EQUIPMENT. This information bulletin provides the dealers on how to submit a product information report.
10-08-110-001B2018-05-21. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. This informational bulletin provides information on how to use floor mats.
10-00-89-006E2018-05-21. Service bulletin. EQUIPMENT; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This information bulletin provides the dealers on how to submit a product information report.
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.
17-NA-1702018-05-21. Service bulletin. EQUIPMENT. This informational bulletin explains the Road Force balancers and what they can do for customer concerns.
16-NA-3832018-05-21. Service bulletin. EQUIPMENT; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS. This informational bulletin advises of a new fuel injection kit used for decarbonizing the intake valves, and explains how toptier fuels should be used to reduce carbon build up.
00-06-01-012G2018-05-21. Service bulletin. ENGINE. This informational bulletin advises the possible issues that may occur using a scotch brite pad or highly abrasive disk on engine surfaces.
08-08-46-004A2018-05-21. Service bulletin. EQUIPMENT. This informational bulletin provides information regarding the aftermarket device interference with onstar diagnostic service.
08-08-44-015C2018-05-21. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This informational bulletin provides information regarding the inappropriate warranty claims submitted for damaged radios and instrument panel clusters, provides exampls on whats an acceptable for warranty and whats not
12-03-10-0022018-05-21. Service bulletin. WHEELS. This informational bulletin provides a description of the proper wheel installation and proper wheel torque techniques used to install wheels onto vehicles
06-00-89-026J2018-05-21. Service bulletin. EQUIPMENT. This warranty administration bulletin provides information regarding customer concerns not duplicated and which labor operations to claim when the concern cannot be duplicated. Also provides information on how to submit claims within the global warranty managment.
10-00-89-010B2018-05-21. Service bulletin. EQUIPMENT:ELECTRICAL:ANTI-THEFT DEVICES. This informational bulletin provides information and rules for GM keycode look up applicationa dn the key code security rules and regulations for Canada only.
12-00-89-002A2018-05-21. Service bulletin. EQUIPMENT:ELECTRICAL:ANTI-THEFT DEVICES. This informational bulletin provides information for requesting a new key code for customers with lost or stolen keys
10-00-89-017W2018-05-21. Service bulletin. EQUIPMENT. This informational bulletin provides a list of newly released PI and Bulletins in regards to recent released vehicles so that vehicles can be fixed right the first time in for service.
10-08-64-002B2018-05-21. Service bulletin. EQUIPMENT. This warranty administration bulletin provides information on what should be considerd warranty damage or damage that was at fault of the cutomer and how to properly claim them on the warranty paperwork
15-08-44-001F2018-05-21. Service bulletin. EQUIPMENT:ELECTRICAL. This informational bulletin provides information on a GM of Canada OnStar cellular communication upgrade.

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