What's wrong with my 1988 GMC 1500 pick up with 350 motor?

Asked by Feb 19, 2015 at 10:12 AM about the 1988 GMC Sierra 1500 C1500 Standard Cab SB

Question type: Maintenance & Repair

The check gages light comes on and the temp gage climbs to max for a minute or so. It then will immediately go back to normal. This doesn't seem to effect the performance.

2 Answers

5

either the ensor is going bad or the thermostat is starting to lock closed

Seam to me your. thermostat is going bad.

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