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.Google+
Car Problem Reports
Chevrolet Silverado 3500 Speedometer or Other Instrument Panel Gauge May Work Erratically
Chevrolet Silverado 3500 Problem
Took to dealer to have it repaired twice.
Insttrument cluster causing coolant temperature to stay stuck at 260. Doesn't have code for overheating showing nor does it have any other signs of overheating, checked with pyrometer. Lower hose is cooler than upper house but both are within range