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Heater

Tiny
SANDY NOTHIN ON-ME SIGLOW
  • MEMBER
  • 2003 SATURN L300
  • V6
  • AUTOMATIC
  • 133,600 MILES
I just got this 2003 saturn l300. I cant get the heat and ac to come on. Dials turn but blower wont come on at all. Nothing shows up on the little screen either. I checked the fuses. They are fine. What could be wrong?
Monday, September 5th, 2016 AT 5:30 PM

4 Replies

Tiny
AL514
  • MECHANIC
  • 4,792 POSTS
If you have power at both sides of the fuses, your next check would to check for power at the actual heater control itself. If the digital display isn't showing anything it sounds like there may not be any power going to it (ie. A wiring circuit problem) or the control itself has gone bad.
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Monday, September 5th, 2016 AT 7:57 PM
Tiny
AL514
  • MECHANIC
  • 4,792 POSTS
Also if there is a relay that controls that power circuit.
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Monday, September 5th, 2016 AT 7:58 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,356 POSTS
Please let us know what you find so it will help others.

Best, Ken
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Wednesday, September 14th, 2016 AT 6:10 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
With the key in the run position are you sure the ignition 3 fuse in the underhood fuse and the bcm 2 fuse in the left hand side fuse box both have power to both sides of the fuse?
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Wednesday, September 14th, 2016 AT 6:32 PM

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