1998 GMC G Series

Service bulletins

Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.

• 10248444Vehicle Recalls
• 10246631Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
• 10232287This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
• 10171318This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.
• 10168979This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the unlock code from the scrambled code. The PI update to version D is to advise the unlock procedure is temporarily unavailable. E version update is to add administrative details.
• 10165876This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the unlock code from the scrambled code. The PI update to version D is to advise the unlock procedure is temporarily unavailable.
• 10157018This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.
• 10141381This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco Theft Lock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the unlock code from the scrambled code.
• 10137901This informational bulletin provides the technician with information on what E85 fuel may due to a non E85 vehicle.
• 10114947This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the unlock code from the scrambled code.
• 10114924This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the unlock code from the scrambled code.
• 10113443This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.
• 1009273200064H - special coverage (revised part information). Some customers may experience a failure of the electronic diesel fuel injection pump. This special policy applies only to electronic diesel-fuel injection pump repairs and/or replacement as a result of injection pump failure. This special coverage does not cover: glow plugs, turbocharger wear, low compression engines or pcm/pcm wiring conditions.
• 10032462Saab/hummer/gm: diagnostic tips/recommendations when power steering pump replacement IS necessary. Analysis of returned power steering (ps) pumps that had been replaced for noise, no power assist, no or low pressure and leaking conditions has indicated a high number of no trouble found results. All 1997-2010 vehicles and light trucks; 2010 and prior hummers H2/H3 and saab 9-7X vehicles.
• 10001298Rough idle after start, and/or a service engine soon (ses) light. Various models including the 1995 chevrolet and GMC s/t models.
• 6092348Failure of the electronic diesel fuel injection pump, leading to complaints of poor performance or fuel economy, hard / no starts, hesitation, illumination of the service engine soon light.
• 6091427Some customers may comment on hard, no, or slow start, backfire or kickback during crank / start, grinding or unusual noises during crank, diagnostic trouble code p0338.
• 6089206Special policy adjustment covering the sequential central port fuel injector (scpi) failure condition.
• 635817A failure of the electronic diesel fuel injection pump, leaking to complaints of poor performance or fuel economy, hard / no starts, hesitation, as well as illumination of the service engine soon light.
• 629423Some customers may experience a failure of the electronic diesel fuel injection pump.
• 628938Information used when diagnosing noise conditions such as engine rattle noise, spark knock at 2000 - 2500 rpm range, under a moderate to heavy load with a warmed up engine.
• 628925Some owners may experience a service engine soon light, misfire, rough idle orhard start due to a deposit build-up on the sequential central port fuel inujector (scpi) poppet valve(s).
• 628910Special policy adjustment for vehicles experiencing a failure of the electronic diesel fuel injection pump, leading to complaints of poor performance of fuel economy, hard/ no starts, hesitation, as well as illumination of the service engine soon light.
• 628905Some customers may comment on rough idle after start up, especially after setting overnight.
• 622930Some owners with vehicles built before january 15,1999 may comment on a harsh 1-2 upshift and may also have a check engine light.
• 619742This technical service bulletin states that technicians may experience difficulty in removing the connectors from the park / neutral position switch, usually when trying to remove the switch during transmission service.
• 619373Information pertaining to the new control valve body, spacer plate and gaskets for the 4l60-e automatic transmission.
• 619204Special policy adjustment for vehicles experiencing a failure of the electronic diesel fuel injection pump leading to complaints of poor performance or fuel economy, hard / no starts, hesitation, as well as illumination of the service engine soon light.
• 619170Some vehicles may experience a failure of the electronic diesel fuel injection pump, leading to complaints of poor performance or fuel economy, hard / no starts, hesitation, as well as illumination of the service engine soon light.
• 619065Deductible reimbursement clarification and vin breakpoint correction to 00064 - special policy adjustment - electronic diesel-fuel injection pump failure - repair / replace.
• 619002Some vehicles may experience a service engine soon light, misfire, rough idle or hard start due to a deposit build-up on the sequential central port fuel injector (scpi) poppet valve(s).
• 618141A no reverse, no second gear, or no fourth gear condition. Updated
• 617636Some owners of 1996 - 1999 s/t, M/L, c/k, g, p and W4 trucks may experience a service engine soon light, misfire, rough idle or hard start due to a deposit build-up on the sequential central port fuel injector (scpi) poppet valve(s).
• 617575Some owners of 1996 - 1998 model year s/t, M/L, c/k, g, p and W4 trucks, that are registered in california, equipped with 4.3L, 5.0L or 5.7L engine, and california emissions, may experience a service engine soon light, misfire, rough idle or hard start due to a deposit build-up on the sequential central port fuel injector (scpi) poppet valve(s).
• 616390Service engine soon light, misfire, rough idle, or hard start due to a deposit build-up on the sequential central port fuel injector (scpi) poppet valve(s). The deposit build-up may cause injector poppets to stick closed.
• 616378Experiencing an engine ticking sound coming from the engine compartment while the vehicles IS being driven.
• 615078Some vehicles may set a false obd II with diagnostic trouble code p1404.
• 613602Some owners may experience a service engine soon light, misfire, rough idle or hard start. **Mr
• 612133Some vehicles may experience a service engine soon light, misfire, rough idle or hard start due to a deposit build up on the sequential central port fuel injector (scpi) poppet valve(s).
• 609762Some vehicles that are registered in california, equipped with a 4.3L, 5.0L or 5.7L engine and california emissions, may experience a service engine soon light, misfire, rough idle or hard start.

Every GMC G Series model year

Bars are owner complaints, dots mark years with recalls. Select a year to open its report.