1996 GMC C Series

Owner complaints

What owners report most

1. Service brakes, hydraulic2
2. Fuel system, gasoline1
3. Power train1
4. Suspension1

Latest complaints

• Jul 16, 2015CA278,162 mi
  Suspension
  Driving south on highway 101, through petaluma, south of the north petaluma blvd exit, in lane 3 in the construction zone at approx 8:45 pm at 65mph there IS a hard bump in two different spots were they are grinding asphalt. I hit those spots in the road with not much time to slow down and not…

  Driving south on highway 101, through petaluma, south of the north petaluma blvd exit, in lane 3 in the construction zone at approx 8:45 pm at 65mph there IS a hard bump in two different spots were they are grinding asphalt. I hit those spots in the road with not much time to slow down and not enough warning that there were bumps coming up. Hitting these spots had broken my shock causing it to break and hit the ground. Vehicle had to be towed and repaired. I have pics, receipts, and tow bill.

• Apr 22, 2004IN
  Fuel system, gasoline · Power train

  I cant keep a fuelpump or transmission in this truck.i did some towing but with in limits. I hate this truck!!!

• Apr 22, 2004WV80,249 mi
  Service brakes, hydraulic

  ABS keeps fluttering

• Nov 20, 1996CACrash
  Service brakes, hydraulic › Antilock/traction control/electronic limited slip

  When hitting the ABS brakes, the pedal went all the way to the floorboard and the vehicle would not stop, this was on dry pavement. vehicle hit (2) cars and a motorcycle. *ak

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.

• 10246631Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
• 10244945The following information is provided to clearly explain Isuzus policy for control module (engine, transmission, antilock brake, instrument panel, body control, power interface, etc.) reprogramming. Control module calibrations are regularly updated for many reasons. These reasons may include, but are not limited to: model year change, software corrections, certification compliance, product improvement and specific application requirements. However, the mere existence of a newer control module calibration does not necessarily mean that warranty coverage exists or that the calibration must be installed. It is not our policy to update control modules, under warranty or after warranty, based solely on the availability of a newer calibration file. Below are our guidelines for reprogramming control modules.
• 10232287This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
• 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.
• 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.
• 634850Some customers and dealers may comment on accelerated uneven brake pad wear on some vehicle with four-piston fixed caliper rear disc brakes.
• 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).
• 623445Some customers may comment on inoperative secondary fuel tank transfer pumps.
• 623426Technical service bulletin regarding fuel transfer pump inoperative.
• 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.
• 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.
• 609743General motors began providing child restrain seat top tether hardware packages to customers in the united states who requested them.
• 609709Subject regarding a hard, no start or excessive gray or white smoke condition on start up after recent glow plug replacement.
• 609696Some customers may comment on rough idle after start up, and / or a service engine soon (ses) light illuminated.
• 609676Fuel solenoid driver located on the side of the fuel injection pump failed, causing vehicle to no start or stall.
• 609641Park/neutral position switch connector cannot be removed. Yd
• 609582Rough idle after start, when vehicle has sat overnight and poppets sticking.
• 609579Oil weep or leak at gasket between upper and lower intake manifold. Yd
• 608388Brake lead/pull and front brake wear. *Mjs
• 606765Some cab chassis, crew cab, and pickup models may exhibit a brake lead / pull and front brake wear.
• 606549Subject regarding engine surge while trailering.
• 606089Some vehicles built within vin breakpoints xj105482 and xj510031 may exhibit inaccurate fuel guage readings, vehicle runs out of fuel, or fuel gauge registers full but may still add fuel.
• 605961Customer may comment on engine knocking noise.
• 602824Comments of an extended engine cranking time during a hot restart in high ambient temperatures of 38 c (100 f).

Every GMC C Series model year

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