It pegs out at 120 when you are going 50 - Tahoe Chevrolet Cars & Trucks

Is this a chevy truck? Possibly a 2003? Gm is having SERIOUS issues with these speedometer clusters. The whole cluster is bad and would need to be replaced. I do not recommend getting a used one as the odometer stays with the cluster. ( if donor truck had 150,000 miles and yours had 50,000.... once you swap out the cluster yours would read 150,000. A dealer can order them preset.) Clusters are running about $300.00 from the local gm dealer and most will require their service dept. To repair as it would involve keeping accurate milage on the vehicle for various purposes.