Problem Description and Possible Solution
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.
Average mileage: 88,000 (54,000–122,000)
6 people reported this problem
The speedo works sometimes and doesn't other times. It can be pegged at 120 mph while in park even. Then for no reason the next time the truck is started up the speedo may work fine or be sitting at 60 mph. Sometimes it fluctuates or other times it doesn't. Sending into an independent that specializing in this common chevy/GMC problem called cluster repair.