1996 Cadillac SLS radiator cooling fans

1996 CADILLAC SLS
89,000 MILES • V12 • FWD • AUTOMATIC
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JESSE DESKINS
  • MEMBER
  • 3 POSTS
my cooling fans wont come on,i chahged the thermostat,cts,relay,i checked the fan motors they are working.i have power at the fuse and rely but no power in the wire directly plugged in fan can you suggest anything else i could check or do.
Apr 1, 2010 at 1:24 PM
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TINMAN268
  • MEMBER
  • 3 POSTS
probably the same problem I am having right now. The PCM is not closing the fan circuits. If you check for control voltage at the relay to ground you should have voltage. However the PCM is not switching to ground the circuit on the backside of the relay. I am ordering a new PCM but in the meantime I am installing a separate switch circuit temporarily to turn on the fans by controlling the relays that the PCM isn't.
Jul 23, 2011 at 7:11 PM
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FIXITMR
  • ✓Experienced Mechanic
  • 9,989 POSTS
did you resolve it yet?
Oct 22, 2011 at 4:07 AM
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