2000 Pontiac Grand Prix

2000 PONTIAC GRAND PRIX
Avatar
GRANDPRIX00
  • MEMBER
  • 1 POST
Air Conditioning problem
2000 Pontiac Grand Prix V8 Automatic

I have a 2000 Grand Prix. The air recently only started working on the highest setting. I have day time running lights that now no longer go on if I turn the air on settings 1-4 but will work when it is off or on setting 5. What does this mean? What would need to be done to fix it??
Jul 28, 2009 at 4:13 PM
Advertisement
Avatar
DANAUTHIER
  • ✓Experienced Mechanic
  • 156 POSTS
The daytime running lamps and the HVAC blower motor are on two separate circuits. The blower motor only working on high is a classic symtom of a failed blower motor resistor.
There is a possibility that there is damage to the blower motor resistor connector from overheating causing power to backfeed though the ground circuit which could cause multiple problems. Futher diagnosis would be required.
Check the blower moor resistor, the connector and wiring to it first.
Jul 28, 2009 at 4:42 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle