Heater

Asked by Troy Oct 12, 2018 at 08:05 AM about the 1991 GMC Sierra 1500 C1500 SLE Standard Cab Stepside SB

Question type: Maintenance & Repair

Heat won't blow hot air. Worked fine last year

3 Answers
9,760

Mike answered 6 years ago

Check the coolant level you may have to purge air out if it was low.

Mark helpful

GuruXVHLL answered 6 years ago

most likely a stuck thermostat >>just the nature of thermostats or low low on antifreeze

Mark helpful

Your Answer:

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