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...
1998-2004 · 7 model years
GMC C7500 Problems by year
Owners have filed 2 complaints about the GMC C7500 across 7 model years, and it has 6 recalls. The 2004 has the most complaints once its age is allowed for (1), while 2003, 2004 have far fewer than a typical year. The most reported problem area is the brakes, followed by the electrical system.
- Complaints
- 2
- Recalls
- 6
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Deaths
- 0
C7500 complaints by model year
Highlighted: the year with the most complaints for its age. Older vehicles have had more time to collect complaints - the Safety Index grade allows for that.
Most common C7500 problems
GMC C7500 recalls 6
On certain medium duty trucks equipped with 8.1 L engines and left hand or dual fuel tanks, some of these vehicles have a condition where the fuel filter-to-component box mounting bolts are reversed. With the bolts reversed, the threaded bolt end is oriented...
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...
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.
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...
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...
Latest C7500 complaints
Vehicle overheats every 15 minutes and leaks alot of brake fluid causing smoke to pour out from tires horn doesn't work and head light is broken and a.C. Is broke vehicle is forced upon employees to drive under these conditions everyday on high way city streets
Tl*the contact owns a 2003 gmc 7500 truck. The contact states that when filling the fuel tank there was leakage of fuel on the ground. The fuel tank exhibited severe rust over a period of time. The vehicle was taken to an authorized dealer for inspection. The technician stated the failure was contributed to the fuel tank. There was a replacement of the fuel tanks on two separate occasions. The failure mileage was 40,000 . The current mileage was 120,000. The vin was unavailable.
Questions about the GMC C7500
Which GMC C7500 years have the most problems?
Which GMC C7500 years have the fewest complaints?
What are the most common GMC C7500 problems?
Across every model year, owners report problems with the brakes (1), electrical system (1), engine & cooling (1) most often.
How many recalls does the GMC C7500 have?
NHTSA lists 6 recalls across all GMC C7500 model years. Each year's page lists the recalls for that year; check your own vehicle by VIN at nhtsa.gov/recalls to see whether the repair has been done.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data