The worst 1998 GMC C6500 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
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Recalls 2
Service brakes, air: antilock
- What is wrong
- 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 erratic sensor signal.
- 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.
Recall number 00V232008 · Recall details
Electrical system: wiring: front underhood
- What is wrong
- Vehicle description: medium duty trucks equipped with air brakes and anti-lock brake systems. Chaffing of the electric brake control harness can occur resulting in an electrical grounding condition. This will illuminate a warning light on the instrument panel and shut off the ABS feature.
- Risk
- This condition can cause reduced braking capability of the front brakes, increasing the risk of a crash.
- Remedy
- Dealers will inspect the harness for chaffing and proper routing and will repair if necessary.
Recall number 98V073000 · Recall details
Technical service bulletins for the 1998 GMC C6500 16
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This warranty administration bulletin provides information regarding the field action courtesy...
- This technical bulletin provides a procedure to reprogram the media disc player with the latest...
- Vehicle Recalls
- Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
- Subject regarding vibration or transmission output shaft damage / oil seal leak on conventional cab medium...
- Information pertaining to the release of the exhaust manifold / turbocharger heat shield. tt
- Some customers may comment that the windshield (w/s) washer reservoir shows an unexplained reduced fluid...
- Some drivers may comment that the generator upper mounting bolt is breaking on certain conventional medium...
- Some drivers may comment about the ABS lamp illuminating. an ABS diagnostic trouble code 0281 - brake...
- Some medium duty models with 3126 caterpillar diesel engine and allison automatic transmission may exhibit...
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Questions about the 1998 GMC C6500
Is the 1998 GMC C6500 reliable?
Owners have filed 0 complaints about the 1998 GMC C6500.
What is the most common problem with the 1998 GMC C6500?
There are not enough complaints to tell.
How many recalls does the 1998 GMC C6500 have?
2 recalls, covering service brakes, air and electrical system.
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