Gmc C7500 problems
The Chevrolet Kodiak and GMC TopKick are a range of medium-duty trucks that were produced by the Chevrolet and GMC divisions of General Motors from 1980 to 2009. Introduced as a variant of the medium-duty C/K truck line, three generations were produced. Slotted between the C/K trucks and the GMC Brigadier Class 8 conventional, the Kodiak/TopKick were developed as a basis for vocationally oriented trucks, including cargo haulers, dump trucks, and similar vehicles; on later generations, both cutaway and cowled-chassis variants were produced for bus use.
Following years of declining market share, General Motors (in line with Ford Motor Company) sought to exit heavy-truck manufacturing. After struggling to enter joint ventures or sell the rights to its product line, the company ended production of the Kodiak and TopKick in 2009. The final medium-duty truck, a GMC TopKick 5500, rolled out of Flint Truck Assembly on July 31, 2009.
For the 2019 model year, after a ten-year hiatus, General Motors re-entered the conventional medium-duty truck segment. Developed in a joint venture with Navistar International, the Chevrolet Silverado 4500/5500 is a Class 4–6 vehicle. Slightly smaller than the Kodiak/Topkick, the Silverado 4500/5500 is marketed exclusively as a Chevrolet (with no GMC counterpart).
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Gmc C7500 model years
Common Gmc C7500 problems
The GMC C7500 is a medium-duty truck that has been known to experience several common problems, based on complaints from owners. Two of the most frequently reported issues are related to the engine, specifically starting, idling, and power issues.
Firstly, some GMC C7500 owners have reported difficulty starting the truck without using starting fluid or ether. This issue is often accompanied by the truck spewing oil out of the slobber tube, and in some cases, the oil is found to be diluted with fuel. This could be indicative of a problem with the fuel system, such as fuel contamination or a faulty fuel injector.
Secondly, another common problem reported by GMC C7500 owners is a loss of power, particularly when the truck is under load. This issue is often described as a violent bucking or jerking motion from 40-60mph, and the truck has difficulty getting past 50mph, even when unloaded. This problem is more pronounced when the truck is loaded, and the issue seems to resolve itself after driving for a short distance. However, the problem reoccurs when the engine is restarted after a short period of time. This could be indicative of a problem with the engine or transmission, such as a clogged fuel filter, a faulty fuel pump, or a transmission issue.
Another issue reported by GMC C7500 owners is related to the vehicle speed sensor. This issue can cause a loss of power, particularly when the truck is under load. The vehicle speed sensor is responsible for providing the engine control module (ECM) with information about the vehicle's speed. If the sensor fails, the ECM may not be able to adjust the fuel injection and ignition timing correctly, leading to a loss of power.
In summary, the GMC C7500 is known to have several common problems, including difficulty starting, loss of power, and issues related to the vehicle speed sensor. These issues can be caused by a variety of factors, including fuel contamination, faulty fuel injectors, clogged fuel filters, faulty fuel pumps, and transmission issues. If you are experiencing any of these issues with your GMC C7500, it is recommended that you seek the advice of a qualified mechanic or dealership to diagnose and repair the problem.
Percentage distribution of complaints by Gmc C7500 years
We have researched Gmc problems and analysed all the complaints filed against Gmc C7500 cars and compiled the top 3 most problematic Gmc C7500 model years:
Below you can see the percentage distribution of known problems by Gmc C7500 model years.
Distribution of the number of complaints by Gmc C7500 years
We've also compiled a chart for you with the number of complaints about Volkswagen Jetta cars of certain model years:
Gmc C7500 car problems categorized by type of issue
After analysing all complaints related to Gmc C7500 , it was concluded that the most common issues with these cars are:
- Unknown or other problems
- Fuel system problems
- Gasoline problems
- Electrical system problems
- Service brakes problems
The graph below shows statistics for all Gmc C7500 vehicle components and the number of complaints received.
The NHTSA has received 3 complaints about various vehicle components related to the Gmc C7500 . Below are the 25 most recent complaints reported for Gmc C7500 vehicles.
List of Gmc C7500 complaints
Gmc C7500 2004
- Date Of Incident: 2017-06-01
- Date Complaint: 2017-06-08
- VIN: 1GDJ7C1394F
- Components: ELECTRICAL SYSTEM,SERVICE BRAKES,ENGINE
- Summary: 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
Gmc C7500 2003
- Date Of Incident: 2005-06-16
- Date Complaint: 2009-09-02
- Components: FUEL SYSTEM, GASOLINE
- Summary: 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.
Gmc C7500 1999
- Date Of Incident: 2002-02-13
- Date Complaint: 2002-08-15
- VIN: 1GDM7H1B8XJ
- Components: UNKNOWN OR OTHER
- Summary: INTERIOR DASHBOARD IS COMING OFF. DEALER CONTACTED. FEEL FREE TO PROVIDE ANY FURTHER INFORMATION.*AK
Recalls Gmc C7500
The National Highway Traffic Safety Administration (NHTSA) has issued 4 recalls for different components of the Gmc C7500.You can explore the year of the Volkswagen Jetta you are interested in by selecting it from the list.
- Model: Gmc C7500 1999
- Report Received Date: 2002-11-04
- Manufacturer: GENERAL MOTORS CORP.
- Components: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
- Summary: 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.
- Consequence: 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.
- Model: Gmc C7500 1999
- Report Received Date: 2000-09-07
- Manufacturer: GENERAL MOTORS CORP.
- Components: SERVICE BRAKES, AIR:ANTILOCK
- Summary: 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.
- Consequence: 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.
- Model: Gmc C7500 1999
- Report Received Date: 2000-08-23
- Manufacturer: GENERAL MOTORS CORP.
- Components: POWER TRAIN:AUTOMATIC TRANSMISSION
- Summary: 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.
- Consequence: 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.
- Model: Gmc C7500 1999
- Report Received Date: 1999-11-15
- Manufacturer: GENERAL MOTORS CORP.
- Components: POWER TRAIN:AUTOMATIC TRANSMISSION
- Summary: 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.
- Consequence: 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.
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