i am having a problem with my old guage on my 2004 silverado

The speedometer or other instrument panel gauge may begin to work erratically at times. Our technicians tell us that the instrument cluster must be sent to a repair facility to correct this fault. The warranty has been extended on some of these units to 7 years or 70,000 miles. I have an 04 silverado crew can 4x4. My speed reads 120 at times and it has also read no oil pressure. I was told it was extended to 100,000 miles but never looked into it because my truck has over that. My first few sentence I found some where else. I was told you have to replace the whole dash board cluster and was quotes 317$. I found a site where you can send it in and they will fix it for about 50$. This may have been just the speedomater and u hae to take it apart and put bk yourself. Think the site was peg.com

There was a service bulletin issued to replace the dash cluster due to bad stepper motors. Call your local dealer. I had it done. They paid for the part, I had to cover labor. Only problem is, it has occured again and they won't cover it a second time. Good luck!