Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2005 Chevrolet Silverado 2500 owners, lightly cleaned up (personal details are redacted by NHTSA).
Odometer Fraud. The contact purchased a 2005 Chevrolet Silverado 2500. The contact stated that it was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the mileage was 122,000. After obtaining a Carfax report, it was discovered that the mileage was 202,000.
While driving the vehicle in town on a city street at approximately 35 MPH, with the ac on and the blower in the high position, the blower started turning off intermittently. A smell of burning plastic was noted and the blower completely shut down. The compressor for the ac continued to cycle on and off. The other lower settings for the blower did not work either. It was found that the plug that goes to the resistor pack next to the blower had a badly-burned contact for the ground wire going to the blower. The plastic around the plug was melted and burned and the electrical connector was melted off. A serious fire could have potentially started under the dash due to the intense heat and arcing of the electrical contacts putting me and my family in danger. Doing research on the NHTSA website, this seems to be a common problem with 2005 Chevrolet Silverado trucks. …
Driver side seat heater turns on by itself. This is a dangerous situation because the driver is distracted while driving and must look down to find the off switch. Often, the seat heat comes back on again almost right away.. This situation seemed to occur in approx 2003 to 2007 models. Internet forums show that GM has service bulletins that instruct technicians to do a 'firmware fix". The only way for me to stop this condition was to locate and disconnect a small green connector under the seat that disables the seat heater. Changing the control module didn't remedy the situation. It happens while driving and is intermittent. Seems like GM has remedied the situation in newer models. Seems to me they should be recalling older models to incorporate some sort of "fix". The distraction of locating and turning off the heater is as bad as "driving while texting". …
I have had my blower fan motor replaced the dealer just replaced my cigarette lighter when they were replacing my recalled speedometer they said the wires were melted to cig assembly, days later my truck burnt to the ground. The cause was the heater resister and fan motor started this fire. I am out a truck the dealer says that's what insurance is for. Big deal I get 75% of my truck's value. This was a 2005 2500hd extended cab truck in excellent condition. Why do we as customers have to put up with these defects and take the loss. We suffer. The question is how many fires have been associated with this year truck and the factories problems. When do we as high paying customers get some help with or struggle to keep what we paid for still working with out being burnt. Tw*
The blower motor (for heat & air conditioning) stopped working and was replaced on our 2005 Chevy Silverado 2500. With in a year it stopped working again and upon inspection we along with raymond Chevrolet in antioch, illinois noticed that the blower motor was burned out and the resister harness was burnt. As if it was on fire. Thankfully no further damage was done besides the burning of the motor, wires and harness. This was replaced again on 10-30-08 and now on 06-23-09 again the motor has burnt out again. The dealership service department had no explanation why this has happened 3 times and being aware of this we make sure nothing is close to the dash preventing a spread of fire in case it were to happen again, which it has.
Tl* the contact owns a 2005 Chevrolet Silverado 2500 hd. The contact stated that after purchasing the vehicle he noticed something burning from under the dashboard. The vehicle was taken apart and the contact found that there was burned and melted wires. The contact replaced the wiring harness and the blower motor. The failure recurred a few months later. The dealer was contacted and they advised him of which components that he needed to replace. The contact later received notification a manufacturer's silent recall and the contact was offered a partial reimbursement from the manufacturer. The failure mileage was approximately 50,000. The VIN was unavailable.
Tl* the contact owns a 2005 Chevrolet Silverado 2500. While driving approximately 55 MPH, the contact was pulled over for speeding. The contact stated that the gauge registered at 55; however, the police stated that he was clocked at 65 MPH. The contact then used the GPS to track the speed of the vehicle and it was off by 10 MPH. The failure recurred on several occasions. The dealer was made aware of the failure and stated that the instrument cluster was faulty and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 190,000.
The speedometer is very erratic sometimes showing a faster speed than traveled sometimes a slower speed or no speed at all the odometer has since quit working and displays odometer error where the mileage should read. And now the engine water temp gauge is dead pointing straight down where there are no numbers and never moves. Dealer where I bought the truck new says they have repaired quite a few of these and will cost around $350. To send it out to be repaired by a qualified repair place. I think g m should stand behind such a problem and recall these trucks to fix them.
Tl contact owns a 2005 Chevrolet Silverado 2500. The contact used the lighter installed in the vehicle to light a cigarette. Minutes later, he noticed blue smoke emanating from the instrument control cluster. Upon further inspection, he noticed that the wiring in the fuse box melted. The contact took the vehicle to the dealer and they stated that the wiring harness and fuse box needed to be replaced at the cost of over $2,500. The vehicle has not been repaired. He is in the process of notifying the manufacturer. The failure and current mileages were 64,000.
I purchased my 2005 Chevrolet 2500hd duramax in May of 2015. A week later I was pulled over for speeding 10 over. My truck showed I was driving 55 MPH. I now have a speeding ticket $114. I contacted GM about the issue and they said my VIN# was not qualified for the recall and I would be paying out of pocket ($535 including labor). The part alone is $350. Now at the end of the day I will owe $649 because of GM's mistake. I love GM's products, however they do not stand up to there mistakes which will make me think again before buying one.
Electrical complaints in other Silverado 2500 years
Frequently asked questions
How common are electrical problems on the 2005 Chevrolet Silverado 2500?
NHTSA has 98 complaints about the electrical system of the 2005 Chevrolet Silverado 2500, 36% of the model year's 269 complaints. The component named most often is instrument cluster/panel (43 mentions).
Is there a recall for 2005 Chevrolet Silverado 2500 electrical problems?
No. NHTSA lists no electrical system recall for the 2005 Chevrolet Silverado 2500. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2005 Chevrolet Silverado 2500 electrical problems start?
Half of the complaints with a recorded mileage happened before about 60,000 miles, and 9% before 25,000 miles.
Is it dangerous?
Owners linked 0 crashes, 12 fires and 1 injury to electrical system problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.