My 2004 GMC Sierra 1500 has erratic speedometer malfunctions. I first noticed this on a trip with my speedometer reading 65 mph and all the traffic of a 4 lane expressway was passing me. I then realized my portable gps unit was reading a much slower speed. Speeding up to the gaps reading my truck speedometer registered 110 mph. At times the readings are reversed. And at other times the speedometer doesn't work at all. After research on the internet I"ve discovered GM has used faulty ?cluster stepper motors? and many customers are having this same problem and GM knows about the problem. Fortunately there haven"T been any reported deaths yet due to the problem one would hope that a recall would result before there are fatalities.

- Madison Heights, MI, USA

Speedometer stops working at times, gets stuck around 70mph while driving sometimes at other speeds. When the truck is turned off it does not go to zero instead it goes to 20-40mph and then I guess it thinks that's where zero starts. Truck only had 42,000 miles when these problems started and it seems to be getting worse. The truck is a 2004 GMC Sierra Z71 almost new. Sometimes I don't know how fast I'm going when this happens.

- Dumas , TX, USA

Speedometer not working properly. Reads 35 mph when stopped/not running and 40-50 mph higher than actual speed when driving.

- Tracys Landing, MD, USA

While driving the speedometer stuck at 60 mph and would not return to zero. When the truck was restarted and driven the speedometer went around past the 120 mph on the gauge. I did get the speedometer back to zero by starting and then turning the ignition off quickly. I continued to do these because the speedometer would fall aprox 5 mph every time that I did this. It took about 12 times to get it down to zero. This is the first problem that I have encountered with my 2004 GMC. I have about 29000 miles on this truck.

- Gridley, CA, USA

Faulty speedometer readings on a 2004 GMC Sierra with 40,000 miles.

- Edwardsville, KS, USA

2004 GMC Sierra truck speedometer reads over 120mph when driving on highway and reads 30 to 60mph when stopped. Repeated starting and turning off engine resets the speedometer to 0 when stopped, but only for a short time. It jumps back up to over 120mph when driving again.

- Fort Gibson, OK, USA

Please help we recently purchased our son a 2004 GMC Sierra pickup, truck is excellent shape not to many miles etc. He has put about 200 miles on the truck and all of a sudden his speedometer quits his fuel gage wont register right, we take it in and they say it is a cluster panel problem cost about 600 to fix, they told me there is alot of this with this year model why is there not a recall, I came home and researched the internet and found hundreds of complaints why is GM getting away with this hopefully there would be no deaths related to this but this is a problem hope you can help thanks

- Longville, LA, USA

Speedometer does not work.

- Rimersburg, PA, USA

- the contact owns a 2004 GMC Sierra pick up with a current and failure mileage of 40,000 miles. The contact stated that the speedometer was working improperly. When the vehicle was at a stop the speedometer read that the vehicle was traveling at 120 mph. While driving the speedometer was not registering the speed correctly. The contact would keep up with the flow of traffic to try to gage the vehicles speed. The contact has been to the dealer, and was told that they had to replace the speedometer motor. Ak updated 05/23/07.

- Granet Bay, CA, USA

2004 GMC Sierra speedometer failure. Sticks on 40-50 mph.

- Gainesville, TX, USA

The speedometer is not working correctly. The speeds shown on the speedometer have nothing to do with the actual speed of the vehicle.

- Coloma, MI, USA

1 speedometer registering 120 sitting still ( replaced cluster). 2 wipers would not shut off ( replaced wiper motor circuit board) 3. knock in column ( replaced intermediate shaft).

- Cocoa Beach, FL, USA

I have a 2004 GMC Sierra ext. Cab truck with about 70K miles on it. In the past week, the speedometer started reading higher than 120 mph while driving. I was only doing around 50 mph. When stopped it reads around 60 mph. I can start and turn off the engine several times and the speedometer needle will drop around 10 mph each time it starts. When it gets to 0, it will read fine for a little while and then gradually start climbing up past 120 mph again. 2nd complaint. Around every 20K to 25K miles, I have to take the truck to the dealer and have a new steering column grease packing kit installed because the steering column starts knocking in the engine compartment. The first 2 times it was done was under warranty, now the warranty is up and it needs another packing done. The dealer wants me to pay for this one. This has been an ongoing problem since I bought the truck brand new.

- Ft. Gibson, OK, USA

My GMC Sierra crew cab K1500 Z-71 speedometer began malfunctioning around 37,000 miles. It will stick at 0, or sometimes at 20 or 50. The problem is intermittent and gets better sometimes if I stop and turn off the engine. Now volt meter is not working properly. This is a safety hazard, since I can't tell the mph that I am driving. I regularly carry my 2 small sons and this is quite scary. I have noticed that this is a recurring problem with many GM products this age. General Motors has a major problem here !

- Copperas Cove, TX, USA

I have a 2004 GMC Sierra Z71, and the speedometer has begun to perform erratically. It no longer returns to 0 while stopped, and never goes below 35 mph. This has just begun, and apparently judging by the number of similar complaints (over 350 in one forum alone) I have found on web forums this is a very well known problem to GM.

- Olive Branch, MS, USA

I have a 2004 GMC Sierra that has a malfunctioning speedometer. It shows reading anywhere from 0-100 mph over what you are traveling at. With the truck turened off - the speedometer will show it at speeds of up to 100 mph. This all started at about the 40,000 mile mark. We previously had a 2004 Chevy 5500 truck that too began w/ speedometer trouble at the 40,000 mile range. We know several other people with a 2004 Chevy/GMC all of whom have this same problem. Checking around the internet and it appears that this is a huge problem that should warrant a recall before something tragic could happen.

- Hanover, PA, USA

I have a 2004 GMC Sierra that the speedometer is sticking. I have found on numerous web sites that lots of people are having the same trouble. Apparently the 2004 GMC instrument cluster is having all kinds of problems with faulty gauges.

- Center, KY, USA

Speedometer gauge is showing wrong speed went to local dealership and they said they have had many complaints but it is not a recall and price to fix is $450-$550.

- Joplin, MO, USA

I have a 2004 GMC Sierra. For the last 3 months the speedometer has been acting funny. At times it will say I am driving a lot slower than I actually was. For example, this morning, it said I was going 10 mph and I was probably going about 30-35 mph. I turned off the vehicle and it reset. Yesterday while driving on a trip, the speedometer stuck on 75 mph. I did not realize it until cars started passing me on the interstate and when I checked my gps system, it said I was going around 60 mph. The speedometer is just all over the board. Sometimes the speed is correct, sometimes its slower and sometimes its faster. I believe this is a real safety concern since the driver does not know how fast they maybe really going. I have checked on the internet and it looks like this is a common problem.

- Oak Ridge, TN, USA

2004 GMC Sierra speedometer gives erroneous readings at highway speed. Caused inadvertent and braking, unsafe speed and loss of situational awareness.

- Hollywood, MD, USA