SPONSORED LINKS

Headlights come on when blower switch turned on

Tiny
UPMM019
  • MEMBER
  • 1997 PONTIAC GRAND PRIX
  • 3.8L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 130,000 MILES
I have a 97 grand prix and I have noticed that my A/C / Heat / Blower are not working but the strange thing is when I turn the blower switch on it turns on my headlights. The headlight switch is in the off position.

Looking for some troubleshooting help.
SPONSORED LINKS
Monday, May 12th, 2014 AT 6:14 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Have you checked fuses? Have you checked the blower motor itself?
Was this
answer
helpful?
Yes
No
-1
Monday, May 12th, 2014 AT 6:26 PM
Tiny
UPMM019
  • MEMBER
  • 216 POSTS
Yes, fuses are good. Blower had worked before this but what would this have to do with my headlights turning on when I turn on the blower motor?
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Tuesday, May 13th, 2014 AT 1:55 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
That's a good point. Have you checked the condition of the relay box? Look there to see if anything is melted or shows indications that power could be jumping between relays. There has to be a short to power. As a result, when you send power to the blower, the power is rerouting to the lights. Not a common issue.
Was this
answer
helpful?
Yes
No
-1
Tuesday, May 13th, 2014 AT 6:41 PM

Please login or register to post a reply.

Related Heater Switch Content

VIEW MORE

Sponsored links