Gauges act funny, rpm pegs out and so does speed odometer

There is a recall on the instrument cluster for erratic gauge problems.If you didn`t get a letter then call your dealership and give them your vehicle identification number and ask them if there are any open recalls on it.What they do is type in your V.I.N.to their computer and they will tell you if your truck is involved.The problem is the instrument cluster.The cluster has to be programmed to your V.I.N.when it is replaced.Your V.I.N.has all the information that your vehicle is equipt with.Good luck.

Pretty common problem with these. Here's a guide to learn how to fix GM instrument clusters yourself, I used it to fix mine and it worked great.How to guide for Silverado instrument cluster repair
Pretty common problem with these. Here's a guide to learn how to fix GM instrument clusters yourself, I used it to fix mine and it worked great.How to guide for Sierra instrument cluster repair