1997 GMC Sonoma Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1997 GMC Sonoma
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1997 GMC Sonoma ProblemsThe Fuel Pump May Fail Causing the Engine to Stall or Crank Over But Not Start
The headlight switch used on the GMC Sonoma is known to fail through normal operation. Since the headlight switch is also integrated into the interior lights, a malfunctioning switch can cause issues with interior lights as well.
- Symptoms of a failed headlight switch include:
- Headlights and taillights failing to turn on or off
- Interior lights flicker, or fail to turn on or off
- Gauge cluster lighting off or flickering with headlights on
- Parking light malfunctions
This issue is well known with General Motors Trucks and SUVs, and is solved by testing and, if needed, replacing the headlight/dimmer switch. Bad grounding wires at the tail-lights, and dirty/corroded tow package wires can also lead to some of these issues.
The heater core under the right side of the dashboard may leak engine coolant which can puddle on the passenger front floor. The loss of coolant may cause an engine overheating condition. Our technicians tell us that removal of the dash board is necessary to replace the heater on these vehicles.
1997 GMC Sonoma QuestionsNew battery and fuel pump still won't start it's been sitting for about a month (1 answer)
Have checked fuel pressure from Schrader valve next to fire wall have good pressure just don't know what else it could be
Injecting too much fuel into the cylinders. Injectors are new, pressure regulator is new. Plugs are new.????