Thermostat getting hot for no apparent reason

Asked by Mar 07, 2017 at 12:50 AM about the 2013 GMC Acadia SLE AWD

Question type: Maintenance & Repair

On on Highway it is fine but but on the
regular Street when I come to a stop light
my thermostat goes. Thermostat replace
water pump replaced radiator flushed and
yet the thermostat persist to get hot

1 Answer

22,105

You mean the temp gauge rises. May need to bleed the air out of the cooling system. Make sure your fans are working. If it persist then have test ran to confirm or rule out a head gasket failure. Block check test for exhaust in the cooling system. Compression test is done also to confirm compression leaking, May see steam exiting tail pipe is another sign or bubbles in or boiling coolant. I would for check the fans first and do a bleed on the cooling system to rule it out.

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