11 problems related to electrical system have been reported for the 2004 GMC Sierra. The most recently reported issues are listed below.
Ignition will not turn over. Battery is fine, everything works except turning over. When you turn the key nothing happens everything goes dead. I have a video.
Rusted out/ corroded brake lines burst while stopping for a deer running out on the road. Was warned of this problem upon purchase of the vehicle in 2010 and personally coated all brake lines b4 winter every year. . . Never saw worse lines! I own classic cars that are twice as old with shiney original brake lines. The fuel lines also rotted out spilling fuel over the top of the fuel tank and on the ground while filling up. All fuel lines and fuel pump connections were severely rotted. Worst I have seen. Dash consistently changes languages rendering odometer non functional. Speedometer is inaccurate some times not even working especially on cold days. Hmmmm rotted brakes+no speedometer+leaky fuel lines=crash,bang boom!. . And I have a car seat in my vehicle! luckly I perform preventative maintenance and drive safely. Still wonder how these issues got swept under the rug.
The contact owns a 2004 GMC Sierra 1500. The contact stated that the speedometer would either display an inaccurate speed reading or become completely inoperable. The contact indicated that the defect was diagnosed by the dealer and the contact was informed that a new instrument panel cluster needed to be installed to remedy the defect. No repairs were performed on the vehicle. The manufacturer was notified of the failure. The failure mileage was 83000.
I have a 2004 GMC Sierra that has an electrical issue with the abs or brake system. The brake light, abs light and service brake system light goes off at random times. Might have something to do with the air conditioning because the a/c draws power from the battery and I can see that a certain level the indicators go off. Most of the time the lights chime and blink when I apply the brake but it also has happened when just turned the truck on. I've replaced the rotors and pads to still have the problem. I'm not sure if it's a ground or sensor that is failing. I've found TSB for regrounding, failing sensors, or ecbm. Still haven't found the correct diagnosis. I just hope the abs functions when I need it.
The contact owns a 2004 GMC Sierra. The contact stated that while driving approximately 40 mph, the vehicle stalled without warning. The vehicle was ble to be restarted after the contact shifted into neutral. The failure was recurring over a period of two years. The vehicle was taken to the dealer who could not duplicate the failure. The manufacturer was not notified. The approximate failure mileage was 110,000.
In most 2002-2006 chevy and GMC trucks the the cluster will start going out gm had a recall on on the cluster but never sent out a report on it.
The speedometer on my 2004 GMC pu failed on a recent trip from me to FL. As I pulled onto the MA trpk, I noticed that the speedometer was reading 85 mph. At the time, I was probably going 60 - 65. It then read higher and higher on the trip and the needle was buried at times. When I stopped, the needle would drop a little. A few days after the trip was concluded, the needle returned to zero when stopped and currently records accurately. Obviously, it is a safety hazard when your speedometer fails, especially in the middle of a long trip. I recently asked a local dealer if there has been a problem, and was told that they have had to replace "lots" of speedometers ($350). I then asked if the replacements failed and was told "not yet". Gm has not offered to fix this problem (I was just out of warranty) and should be forced to do so and recall all faulty units. There has been a lot of discussion on the internet. Thank you for your attention to this matter.
2004 Sierra caught on fire due to a malfunction in the truck.
On November 29 while driving my 2004 GMC Sierra pickup my speedometer malfunctioned. This continued to happen off and on for 2 or 3 weeks then stopped working. After checking with the dealership I was advised this would cost 500 dollars to repair. The local sheriff's department has 10 2003 chevy tahoe's that have experienced the same problem. I would like some research on this device malfunction. Thank you.
While driving our 2004 GMC Sierra, the speedometer, keep acting up and then it just quit. Before the manufactures warranty went out. So I took it to the local dealer and said it would cost me about 1000. 00 dollars . I think this problem should be fixed by the manufacture.
The heating and ac controls were replaced 2 times in 2007. And are still not working properly today I was driving home with the ac on because it's 99 dreges in los angeles county and like it has been doing for years it started blowing hot air on its own. I have see other gm vehicles with the same issue. So I believe gm is responsible for correcting this issue.