Two problems related to wiring have been reported for the 1998 GMC Sonoma. The most recently reported issues are listed below.
The electric wiring from the main trunk that comes from the firewall and the motor system. Branched off from the main branch to the windshield wipers, who only worked 67% of the time.
Recalls # 97v20800 & 97v208001 gm/wiring-harness clip. Owner did not receive recall letter until may 26, 1998. Owner is concerned because vehcle was purchased on Jan 13, 1998, and the recall work was not performed at that time.