37 problems related to electrical system have been reported for the 2003 Chevrolet Suburban. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Chevrolet Suburban based on all problems reported for the 2003 Suburban.
Speedometer fluctuates, indicates various speeds other than actual speed. Never a standard offset from actual speed. Might indicate 20 mph at 55 mph actual as measured by gps one time, then 10 mph at 60 mph actual another time.
While driving four wheel drive shift sticks, causing the vehicle not to accelerate properly. General motors says this is an electrical problem, and is looking into the problem. Vehicle experiencing problems with four wheel drive shift sticking causing the vehicle not to accelerate properly. General motors claims that this may be an electrical problem. General motors has failed to follow up on remedy for problem.