2001 GMC Sonoma.

Asked by Jan 06, 2016 at 06:56 AM

Question type: Maintenance & Repair

Maximum air temperature from heater is 65 degreesl.  It that right or should it be warmer?  Engine is normal temp.

1 Answer

83,435

No, it should be a lot hotter than that, you could have a fresh air blend door that is not working right or a plugged heater core, you might check the heater hoses when it is at full operating temp and see if the hoses are both quite warm to the touch, if one is hot and the other noticeably cooler then the core could be plugged. HTH

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