1999 GMC C7500
Safety record from NHTSA: recalls, owner complaints, investigations and service bulletins.
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These records cover every 1999 GMC C7500. To see whether one car still needs a recall repair, decode its VIN or check it with NHTSA.
Recalls
4 recalls name the 1999 GMC C7500. Newest first.
Certain medium duty c-series and B7 school bus chassis equipped with a 7.4 liter gas engine and an impco lpg conversion kit. some of these vehicles may have engine backfires with sufficient force to damage the engine air intake system and the air cleaner filter element.
Risk and remedy
Risk
If the damaged air cleaner parts are dislodged from their normal position, these parts could come in contact with the hot exhaust manifold and/or hot exhaust gas recirculation (egr) valve tube resulting in a possible engine compartment fire.
Remedy
Dealers will install a redesigned mixer bonnet and air cleaner housing cover, selective upgrades in various connections related to the air induction system, and if needed, a new air cleaner filter. owner notification began december 18, 2002. owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact chevrolet at 1-800-222-1020 or GMC at 1-800-462-8782.
Vehicle description: school buses, medium duty trucks and tractors built with bendix air ABS with an EC-17 1030r electronic control unit (ecu), there have been reports of unwanted ABS activation at low speeds caused by 1) chafed ABS wheel speed sensor wires on rotating parts or 2) a damaged component at the wheel end that generates a certain type of…
Risk and remedy
Risk
This condition could cause the ABS ecu to exhaust the air at the air brake modulators for one or more of the wheels. this could result in extended braking distances and a possible crash.
Remedy
Dealers will replace the ABS ecu.
Vehicle description: medium duty trucks. the transmission fluid could leak from a heat degraded transmission fluid cooler hose onto the exhaust system on the passenger's side of the vehicle.
Risk and remedy
Risk
This condition could result in a fire.
Remedy
Dealers will install a new transmission fluid cooler inlet hose and outlet hose designed with a heat sleeve and ensure adequate clearance to the exhaust system take-down pipe. dealers will also inspect the right-hand exhaust manifold seal for leakage, and replace if necessary.
Vehicle description: medium duty conventional cab trucks and school bus chassis equipped with an automatic transmission, have transmission shift cable end rods that have not been crimped to the proper specification. over time, the shift cable could be pulled out of the rod end causing the driver to lose the ability to manually change transmission gears.
Risk and remedy
Risk
With this condition, the vehicle may move in a direction not anticipated by the driver, increasing the risk of a crash.
Remedy
Dealers will install a new shift cable.
Owner complaints
1 complaints
Latest complaints
- Unknown or other
Interior dashboard IS coming off. Dealer contacted. Feel free to provide any further information.*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.
- 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.
- 10195303Engine Backfire and Related Driveability Issues
- 10190934Underbody Component Corrosion The following information may be helpful when addressing underbody component corrosion with customers. Some customers may comment that one or more of their vehicle's underbody components are showing some form of corrosion. This corrosion may be red in appearance (rust) if the component is steel, forged iron or cast iron. This corrosion may also be grey or white in color if the component is constructed of an aluminum alloy.
- 10190933Underbody Component Corrosion The following information may be helpful when addressing underbody component corrosion with customers. Some customers may comment that one or more of their vehicle's underbody components are showing some form of corrosion. This corrosion may be red in appearance (rust) if the component is steel, forged iron or cast iron. This corrosion may also be grey or white in color if the component is constructed of an aluminum alloy.
- 10190932Refinishing Aluminum Wheels This bulletin updates General Motor's position on refinishing aluminum wheels. GM does not endorse any repairs that involve welding, bending, straightening o re-machining. Only cosmetic refinishing of the wheel's coatings, using recommended procedures, is allowed. Evaluating Damage In evaluating damage, it is the GM Dealer's responsibility to inspect the wheel for corrosion, scrapes, gouges, etc. The Dealer must insure that such damage is not deeper than what can be sanded or polished off. The wheel must be inspected for cracks. If cracks are found, discard the wheel. Any wheels with bent rim flanges must not be repaired or refinished. Wheels that have been refinished by an outside company must be returned to the same vehicle. The Dealer must record the wheel ID stamp or the cast date on the wheel in order to assure this requirement. Refer to Refinisher's Responsibility Outside Company later in this bulletin.
- 10190931Refinishing Aluminum Wheels This bulletin updates General Motor's position on refinishing aluminum wheels. GM does not endorse any repairs that involve welding, bending, straightening o re-machining. Only cosmetic refinishing of the wheel's coatings, using recommended procedures, is allowed. Evaluating Damage In evaluating damage, it is the GM Dealer's responsibility to inspect the wheel for corrosion, scrapes, gouges, etc. The Dealer must insure that such damage is not deeper than what can be sanded or polished off. The wheel must be inspected for cracks. If cracks are found, discard the wheel. Any wheels with bent rim flanges must not be repaired or refinished. Wheels that have been refinished by an outside company must be returned to the same vehicle. The Dealer must record the wheel ID stamp or the cast date on the wheel in order to assure this requirement. Refer to Refinisher's Responsibility Outside Company later in this bulletin.
- 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.
- 10000456Engine backfire and related driveability issues.
- 6092588Experiencing noisy release bearing, slipping clutch or inoerative clutch.
- 6092584Subject regarding transmission oil cooler line degradation.
- 635013Subject regarding vibration or transmission output shaft damage / oil seal leak on conventional cab medium duty models.
- 634991Information pertaining to the release of the exhaust manifold / turbocharger heat shield.
- 634800This bulletin IS being issued to assist technicians in efficiently diagnosing and correcting backfire and other related driveability concerns.
- 628908Some customers may comment that the radiator surge tank cap contacts the underside of the hood.
- 622959Some drivers may comment that the generator upper mounting bolt IS breaking on certain conventional medium duty models.
- 619394Some customers may comment that the windshield (w/s) washer reservoir shows an unexplained reduced fluid level after vehicle operation.
- 619172Some drives may comment that the heater outlet hose IS routed too close to the generator or that the hose contacts and rubs on the generator.
- 617728Some drivers may comment about the ABS lamp illuminating. An ABS diagnostic trouble code 0281 - brake switch circuit may have been set on those vehicles equipped with hydraulic brakes. The diagnostic trouble code will be stored in memory and the ABS will be disabled.
- 617721Some medium duty models with 3126 caterpillar diesel engine and allison automatic transmission may exhibit an engine speed power takeoff (pto) operation returning to idle for no apparent reason.
- 617620General motors has decided that a defect which relates to motor vehicle safety exists in certain medium duty vehicles. Some of these vehicles exhibit a condition in which transmission fluid may leak from a heat degraded transmission fluid cooler hose onto the exhaust system on the passenger's side of the vehicle.
- 614352Some customers may comment on an intermittent hard start or no start, and / or possible malfunction indicator light with a diagnostic trouble code p1345.
- 612674Some vehicles may experience on the cab assist step cracking around the mounting bolts. *Mjs
- 611294Some owners may comment on the cab assist step cracking around the mounting bolts.
- 606551Concerns with the coolant alarm and oil pressure alarm activating when the vehicle IS stopped and the engine returns to idle.
- 606369On some medium duty conventional models, the radiator surge tank cap contacting underside of hood.
Every GMC C7500 model year
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