Having problems with your 1999 Pontiac Montana ?

No rear heat in pontiac montana '99

\015 The back fan but no blowing warm air just cold air\011\011\011\015 Posted / edited by AnonymousUser on : 25-10-2021

Answers :

Warm up vehicle, then access heater pipes that run to rear of vehicle.  they should be HOT. if not you have  a circulation issue.  IF they are hot, then the blend door is not in the correct position.  this door directs air across a hot or cold core to create the correct air temp. check and update me.  
Repair Help & Product Troubleshooting for 1999 Pontiac Montana

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