SPONSORED LINKS

Free

Tiny
MAXPAUL123
  • MEMBER
  • 1999 OLDSMOBILE SILHOUETTE
  • 6 CYL
  • FWD
  • AUTOMATIC
I have a 1999 oldsmoblie silhouette the front heater will not switch from cold to heat and it will not switch from defrost to front pannel it coming out from all the vents I change the control pannel still no change what controls both that might be bad
SPONSORED LINKS
Friday, December 10th, 2010 AT 5:30 PM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
That's pretty odd and probably a coincidence. The mode controls are vacuum controls and the temperature is an electric actuator. The control head is what operates both of them but I suspect you have 2 separate problems. You need to verify vacuum supply from the engine to the control head and make sure the vacuum reading matches engine manifold vacuum.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, December 10th, 2010 AT 6:06 PM

Please login or register to post a reply.

Related Defroster Content

Sponsored links