2004 Gmc W4500 problems

Overview of popular issues
Analysis of common problems
Сomplaints list
Recalls list

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Common 2004 Gmc W4500 problems

Common Problems with the GMC W4500 2004: A Detailed Analysis

The GMC W4500 2004 is a reliable and robust vehicle, but like any other vehicle, it has its share of problems. Based on complaints from owners, the following are the most common issues with the GMC W4500 2004.

Transmission System Problems

Many GMC W4500 Forward owners have reported problems with the transmission system. They complained about harsh or delayed shifts, transmission slipping, and no response from the vehicle when shifting gears. The transmission system is a complex mechanism that requires regular maintenance and servicing. If not maintained properly, it can lead to severe problems, including transmission failure.

The transmission system in the GMC W4500 2004 is a heavy-duty unit designed to handle the vehicle's weight and power. However, it is not immune to problems. The most common cause of transmission problems in the GMC W4500 2004 is a lack of maintenance. Regular servicing and maintenance of the transmission system can prevent most of these problems.

Fuel Priming for 4.8 Diesel Engines

The 4.8 diesel engine in the GMC W4500 2004 requires fuel priming before starting. The fuel priming process is necessary to ensure that the engine gets the required fuel pressure to start and run correctly. If the fuel priming process is not done correctly, the engine may not start or may run poorly.

The fuel priming process for the 4.8 diesel engine in the GMC W4500 2004 involves filling the fuel filter and the mechanical fuel pump with fuel. Once filled, the fuel pump needs to be primed for one to two minutes to allow the fuel to flow through the system. The primer is located on the mechanical fuel pump, and it needs to be twisted to start the priming process.

King Pin Replacement

The kingpin is a critical component of the GMC W4500 2004's front suspension system. It connects the front axle to the steering knuckle and supports the weight of the vehicle. Over time, the kingpin can wear out, leading to a loose or unstable front end.

Replacing the kingpin is a complex process that requires specialized tools and expertise. It involves removing the front axle and steering knuckle, replacing the kingpin, and reassembling the front suspension system. The process requires a 20-ton bottle jack and a hydraulic press to remove and install the kingpin.

Conclusion

The GMC W4500 2004 is a reliable and robust vehicle, but it requires regular maintenance and servicing to prevent common problems. Regular servicing of the transmission system, proper fuel priming, and timely replacement of critical components like the kingpin can ensure the vehicle's longevity and reliability.

2004 Gmc W4500 car problems categorized by type of issue

After analyzing all complaints sent to the NHTSA and researching popular Gmc W4500 problems, we found that the most common problems with these 2023 model year vehicles are:

Service brakes problems
Hydraulic problems
Fuel system problems
Diesel problems

The graph below shows statistics for all 2004 Gmc W4500 vehicle components and the number of complaints received.

2004 Gmc W4500 complaints

The NHTSA has received 1 complaints about various vehicle components related to the 2004 Gmc W4500.

2010-07-06

SERVICE BRAKES, HYDRAULIC,FUEL SYSTEM, DIESEL PROBLEM

Date Of Incident: 2010-05-05
VIN: J8DC4B14847
Components: SERVICE BRAKES, HYDRAULIC,FUEL SYSTEM, DIESEL
Summary: TL*THE CONTACT OWNS A 2004 GMC W4500. THE CONTACT REFERENCED NHTSA RECALL CAMPAIGN ID NUMBER: 05V168000, FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. WHILE DRIVING 30 MPH THE VEHICLE STARTED TO HESITATE. HE TOOK THE VEHICLE TO A LOCAL MECHANIC AND THEY CLEANED THE FUEL TANK. THE FOLLOWING DAY HE EXPERIENCED THE FAILURE AGAIN AND TOOK THE VEHICLE BACK TO THE MECHANIC. THE FUEL GAUGE WAS REPLACED. FOR TWO WEEKS A LOCAL MECHANIC PERFORMED DIAGNOSTIC TESTING ON THE VEHICLE AND THE FAILURE CONTINUED TO OCCUR. HE CALLED THE MANUFACTURER AND THE VEHICLE WAS NOT INCLUDED IN THE RECALL. WHEN HE ENGAGED THE BRAKES HE HAD TO APPLY THEM TWICE IN ORDER FOR THEM TO FUNCTION PROPERLY. THE APPROXIMATE FAILURE MILEAGE WAS 149,300 AND THE CURRENT MILEAGE WAS 149,690.

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2004 Gmc W4500 recalls

The National Highway Traffic Safety Administration (NHTSA) has issued 1 recalls for different components of the 2004 Gmc W4500.

2005-04-20

Manufacturer: ISUZU MANUFACTURING SERVICES OF AMERICA
Components: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY
Summary: ON CERTAIN TRUCKS EQUIPPED WITH RPO IK9, DUE TO INSUFFICIENT DURABILITY AND TESTING, THE FUEL SWITCHING MANIFOLD SOLENOIDS LACK WATER OR SALT INTRUSION RESISTANCE, WHICH CAN LEAD TO FAILURE OF ONE OR MORE SOLENOIDS. FUEL SWITCHING MANIFOLD SOLENOID FAILURE WILL CAUSE INCORRECT FUEL DELIVERY RESULTING IN FUEL OVERFLOW FROM THE FUEL FILLER NECK.
Consequence: OVERFLOW FUEL MAY RESULT IN HIGH AMOUNT OF DIESEL FUEL LEAKAGE. FUEL LEAKAGE, IN THE PRESENCE OF AN IGNITION SOURCE, COULD RESULT IN A FIRE.
Remedy: DEALERS WILL REPLACE THE SOLENOID VALVE ASSEMBLY WITH AN IMPROVED ASSEMBLY INCLUDING ADDITIONAL DETECTION CIRCUIT AND ENHANCED WATER RESISTANCE FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 27, 2005. OWNERS MAY CONTACT ISUZU AT 1-800-255-6727.