» » »

Pontiac Q&A

Ask Your Question

2001 Pontiac Grand Prix Question: No Heat

 

Question

bradb571, 3.8L V6, Naples, FL, January 02, 2012, 17:46
 Rookie

I'm not getting any heat in the car. The a/c seems to be working fine. No overheating issues. Antifreeze is full.
Any ideas??
Thanks

2 Answers
Flag This
  • Medium-star Best Answer
    January 02, 2012, 18:01
    Profile_thumbnail
     Master

    Customer Concern: No heat, both heater core hoses hot. Manual Heater Vent Air Conditioning (HVAC) system.

    Tests/Procedures: 1. Test voltage backprobed at the temperature door actuator Brown wire ignition power, Yellow wire ground, Dark Blue wire control 0-12 volts. If there is a Light Blue wire it is not used.

    2. Test terminal contact.

    3. Remove temperature door actuator. Test for stuck temperature door.

    4. Replace temperature door actuator.
    Tech Tips: Temperature door actuator is located behind right side of dash behind and left of blower motor housing on end of the HVAC housing.

    Reply
    Flag This
  • Answer #2

    January 03, 2012, 02:40
     Journeyman

    Bad thermostat.

    Reply
    Flag This