engine failed

Asked by gmc1989cw Aug 29, 2016 at 12:18 PM about the 1989 GMC Sierra 1500 C1500 Standard Cab LB

Question type: Maintenance & Repair

I have a. 89 gmc seirra 1500 4.3 six cylinder
it turns over a few times and starts but after
you drive it a little while it doesn't wana start
you can let it cool for 15-20 minutes and it
cranks back up I've checked the coil and
module there both good I just can't figure
out what's wrong with it

1 Answer
103,225

KenF answered 8 years ago

I'd check your coolant and cylinder head temperature sensors. Check for trouble codes, or test the sensors. http://troubleshootmyvehicle.com/gm/4.3L-5.0L-5.7L/how-to-test-the-coolant-temp-sensor-1

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