heater blows warm then goes cold shortly after

Asked by Oct 05, 2014 at 03:17 PM about the 2001 Chevrolet Blazer 4 Door LT 4WD

Question type: Maintenance & Repair

when care is started and warms up the heater will blow warm air for 5 min then cools
down . and wont warm until the car has been turned off for a period of time then the cycle
starts over

1 Answer

68,695

Sounds like a clogged heater core. HTH. -Jim

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