1998 GMC C Series

Owner complaints

What owners report most

1. Steering1
2. Unknown or other1

Latest complaints

• Apr 22, 2004MA70,000 mi
  Steering
  First off the truck was manufactured in canada. not sure if that's relevant or not? the steering on this truck has gotten pretty scary at times. the wheel will get hard to turn then it will be normal, then it get super easy so that you oversteer. it happens in both directions. I've tried…

  First off the truck was manufactured in canada. not sure if that's relevant or not? the steering on this truck has gotten pretty scary at times. the wheel will get hard to turn then it will be normal, then it get super easy so that you oversteer. it happens in both directions. I've tried bringing it to a dealer twice but the problems IS intermitant which makes it even more dangerous and harder to diagnose. I noticed someone else IS having the same problem. I'm still looking for a resolution to this problem my feeling IS I'm not the only one.

• Apr 22, 2004KY
  Unknown or other
  This vehicles wiper blade system fails sporadically. It was returned to the retailer for this problem and a problem when the vehicle would not start. The vehicle was towed but when it arrived at the dealership the vehicle would then start and the wipers worked also. However, the wipers still fail…

  This vehicles wiper blade system fails sporadically. It was returned to the retailer for this problem and a problem when the vehicle would not start. The vehicle was towed but when it arrived at the dealership the vehicle would then start and the wipers worked also. However, the wipers still fail either when they were already working and when turned on initially. To me this appears to be a wiring issue. It appears to be the exact same problem seen in the '97 yukon which had a recall for this defect. It appears that the problem extends to the '98 model too.

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.

• 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.
• 10004297Effect of steering box limiter adjustment on turning radius and possibility of power steering system damage due to improper adjustment. Various 1990-2004 models.
• 10000167Engine stall, no start, hard start condition.
• 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.
• 6092333Some customers may comment that the black plastic housing around the outside rear view mirror turns chalky or IS dull in color.
• 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.
• 6089156Concerns with intermittent multifunction alarm activation.
• 6088963Some owners may complain that of noise from the clutch housing, clutch may not engage, clutch disc hub cracked / broken.
• 6088943Conditions with front doors difficult to open; not staying open; and doors are noisy and / or binding when opended.
• 634850Some customers and dealers may comment on accelerated uneven brake pad wear on some vehicle with four-piston fixed caliper rear disc brakes.
• 632346Subject regarding revised drum brakes component specifications for pickup and utility models.
• 632332Subject regarding revised drum brakes component specifications.
• 629530Subject regarding service diagnosis/recommendations for inoperative air conditioning systems.
• 628945Some customers and dealers may comment on accelerated uneven brake pad wear on F6-7 medium duty tilt cab models and H6-7 conventional medium duty models.
• 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.
• 627790Information regarding fuel transfer pump inoperative.
• 627737Information regarding correct vehicle application for eaton. 1990-2002 chevrolet and GMC c-series conventional and t-series tilt cab medium duty models.
• 627626Information regarding poor ride quality. (H6-7 c-series conventional medium duty models).
• 624078Some customers may comment on excessive engine vibration at idle on various 1998 - 2001 medium duty models including chevrolet and GMC f models.
• 623759Information regarding repair versus replace guidelines for vehicles with manual transmissions. *Slc
• 623445Some customers may comment on inoperative secondary fuel tank transfer pumps.
• 623426Technical service bulletin regarding fuel transfer pump inoperative.
• 619242This message concerns certain 1997 through 2001 medium duty trucks with spicer seven speed manual transmissions exhibiting heavy vibration that increases with speed and / or an oil leak and / or a cracked engine block.
• 617754Some vehicles equipped with bendix ABS air brakes have a condition in which the vehicle may have unwanted temporary ABS activation at low speeds.
• 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.
• 616354Some vehicles may exhibit a malfunction indicator lamp (mil) on with diagnostic trouble code p0446 code set.
• 615108Product recall campaign to inspect c extended cab pickups and 4-door utilities exhibiting a condition in which the rear brake front pipe may contact the left front fender wheelhouse inner panel just above the chassis frame.
• 615102Some c extended cab pickups and 4-door utilities vehicles may exhibit a condition in which the rear brake front pipe may contact the left front fender wheelhouse inner panel just above the chassis frame.
• 615080Information pertaining to new transmission calibrations.
• 615078Some vehicles may set a false obd II with diagnostic trouble code p1404.
• 614397Some owners may comment on an engine stall or a slight surge at a stop or when the transmission IS shifted into drive or reverse.
• 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).
• 611250Metal contamination may be found in the fuel filter and filter housing on vehicles with 6.5L diesel engines.
• 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 C Series model year

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