2004 Chevrolet Silverado 2500 electrical problems

Filed Dec 29, 2018 · Acceleration, Electrical · 215,000 miles · MI

Check engine light came on and "low engine power" flashed where the odometer is. This caused the RPM's not to go over 2800. Code reader claims o2 sensors or throttle control module or catalytic convertor issues. We discovered it was none of the above. To fix problem change 3 relays located under hood in fuse box. Relay #8864. Then clear codes, should fix issue unless code persists. Relays will cause a fire if not changed out asap.

Filed Feb 11, 2018 · Electrical · 107,000 miles · CA

Many of the vehicles in this family suffer from random electrical shorts and or poor electrical grounding relating to the drive by wire throttle actuator. The result is that the vehicle will go into 'reduced engine power' mode randomly. In this mode the vehicle will idle but not accelerate or drive. This issue is well documented on message boards with no consistent fix. This condition exposes an extreme hazard as the vehicle can loose power at any time. This is a serious safety issue that should be investigated. I have had my vehicle loose power on the interstate and on high speed 2 lane roads with no shoulder and heavy traffic on 4 occasions. Numerous attempts to repair the issue have been unsuccessful.

Filed Nov 19, 2017 · Electrical · IL

May 2016 installed 5 years warranty battery. Battery dead every three month. Charged battery. Installed new battery last week. Battery dead today. Had alternator tested. (fine) notice dashboard light where read milage looked like this after truck off #######. Only green light will not turn off

Filed Feb 11, 2017 · Electrical · 142,000 miles · VT

Driving on the interstate at 65-70 MPH truck shut off no power steering no brakes showing "reduced engine power" almost got into a wreck with my 2 year old son and 70 year old grandmother...I still owe $10,000 on this hunk of crap...it went away after a broken wire was fixed....but as I sit here in my truck at 3 am because I had to move it I started it up and once again reduced engine power...just so frustrating

Filed Apr 8, 2016 · Electrical, Transmission · 98,000 miles · NY

As with many other posts here, I too have had problems with both the instrument cluster(bad speedometer and gauge readings, "electrical") and also the transfer case with holes wearing through the case, "pump slap". Everything I have researched has LED to issues in both problems. I have since replaced both problems but still nothing back from gm. What a shame that these and all other issues can't be addressed by gm. I have not yet had a problem with the brakes, yet, but I tell you, it will be looked into. These both have happened under normal driving conditions.

Filed Nov 8, 2015 · Electrical, Engine · 108,096 miles · MD

I experienced a sudden loss of engine power while travelling at highway speed. I am the original owner of a 2004 chevrolet silverado 2500 four wheel drive with the duramax diesel and allison transmission. On sunday, october 4, 2015, shortly after a fuel stop, I was traveling on interstate 24 near paducah, ky. At approximately 65 MPH in the left lane with the cruise control set, I experienced a sudden loss of power accompanied by a loud engine rattling, and the check engine light came on. With some difficulty in heavy traffic, I was able to maneuver to the right shoulder of the road. I was able to drive the vehicle at about 25 MPH on the shoulder. Since I was just a few miles from the paducah exit, I limped there and into a hampton inn parking lot. Aaa responded and towed the truck to royal oaks chevrolet in paducah. Since it was a sunday, the service department was closed. The next morning, the dealership's service department pulled up codes po202 and p2149. The service manager reported that there was a service bulletin on this issue and that it would be several days before the repair parts would be available. I later learned that the service bulletin is #05-06-04-047c. The bulletin addresses "a severe reduction in engine power (limp home mode)" I was charged $1,076 for repairs for a known defect that chevrolet knew about.

Filed Jul 22, 2015 · Electrical · 126,700 miles · KY

When I got into the vehicle to start, the driver information center says "unknown driver". As a result of this condition, I cannot adjust mirrors, roll up windows, or get headlights to work. Also, the gauges for voltage, oil pressure, temperature, and fuel do not work. The radio does not work as well. Because of over engineering and faulty parts I cannot use this vehicle. I have already had the instrument cluster replaced as part of a recall. Many people have had this problem as searched, with no answer. General motors has failed to put in place safety systems or override functions to allow safe operation of the vehicle. Gm is using computer controls which often fail to control important safety functions of the vehicle. I currently have the vehicle at the dealer and they have dismantled the bulk of the truck to diagnose the problem. After two days in the shop, they still have not found the problem. Faulty engineering and poor parts have lead to this condition. I have been a lifelong gm owner, but I will reconsider this moving foward. I am sure my next vehicles will be other brands.

Filed Sep 23, 2014 · Electrical · 50,000 miles · PA

Tl* the contact owns a 2004 chevrolet silverado 2500 hd. While driving uphill at an unknown speed, the contact slightly tapped the ignition and the vehicle stalled. The battery warning indicator illuminated. The vehicle was not diagnosed or repaired. The manufacturer was notified. The failure mileage was 50,000.

Filed Jul 28, 2014 · Electrical · 50,000 miles · LA

One by one, the gauges on the dash have stopped working, starting with the engine temperature gauge. Then the fuel level gauge, speedometer, tachometer, oil pressure, and finally the transmission temperature gauge all went out, leaving only the battery voltage meter working correctly. I know at least three other people living within 20 miles of my house that have also had this problem with their 2004 silverados.

Filed Apr 24, 2014 · Electrical, Lights · 175,000 miles · CO

I bought a 2004 chevy silverado from medved and I feel it has a problem and gm says it's working as designed. My problem is the message module LED's are so dim they can't be read in the daylight and the instrument cluster has been replaced 3 times by medved to try and fix the problem. The p n r d d3 d2 LED"s are just fine. They told me to take it to another dealership to see if they can fix it. I took it to [xxx] and a 18 year service tech said it doesn't get any better and gm should have sent out a recall but didn't. Information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6). *tr this could be a safety issue if you can't read the warnings and other messages that appear on the module while driving.