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A/C Not Working Properly


fairly significant
Typical Repair Cost:
No data
Average Mileage:
128,260 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. not sure (1 reports)
1999 Pontiac Grand Prix AC / heater problems

AC / heater problem

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1999 Pontiac Grand Prix Owner Comments

problem #1

Apr 212016

Grand Prix SE 3.8L

  • Automatic transmission
  • 128,260 miles


max A/C air flow setting being distributed to other vents

I believe that there is a vacuum leak or the hvac (vacuum controlled) panel mode door actuator isn't working properly. I tend to lean towards a vacuum hose leak or hose disconnected somewhere but where is it is the 64 thousand dollar question. Any ideas where a good place to start troubleshooting would be?? I don't have any fancy tools ie smoke unit etc so I'm at a disadvantage there I hoping someone could point me in the best direction to fix this problem! Thanks

- , Alamogordo, NM, USA

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