Malfunctioning door locks

Tiny
JTORRESANI
  • MEMBER
  • 2005 PONTIAC GRAND PRIX
  • 140,000 MILES
I own a 2005 Grand Prix GT - in the mornings the doors will not lock using the FOB or inside door switches. However after running the vehicle for a few hours the door locks work again. This only happens when trying to lock the doors, they always open. Weird.
Friday, September 21st, 2012 AT 3:55 AM

1 Reply

Tiny
DRCRANKNWRENCH
  • MECHANIC
  • 3,380 POSTS
It could be the door lock switches. When they are cold resistance in the circuit increases and as they get warmer it decreases. So, they are probably slowly failing, as a lot of electrical switches do, and aare in need of replacement.
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Friday, September 21st, 2012 AT 4:11 AM

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