Check Engine Light and Erratic Gauge Operation on GMC Sonoma

Problem Description and Possible Solution

The electrical contacts in the ignition switch may fail and result in erratic instrument panel gauge operation or illumination of the Check Engine Light. A failed ignition switch will require replacement.

Problem Data
RepairPal Verified
Average mileage: 150,000 (150,000–150,000)
8 model years affected: 1991, 1992, 1993, 1994, more1995, 1996, 1997, 1998
10 people reported this problem