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Low coolant light coming on

Tiny
UMMA8GRANDS
  • MEMBER
  • 2001 CADILLAC DEVILLE
  • V8
  • FWD
  • AUTOMATIC
  • 162,995 MILES
Drained radiator and added all new coolant to our 2001 Cadillac Deville even with the reservior full the check coolant light comes on why?
Friday, July 29th, 2011 AT 8:25 PM

2 Replies

Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
Sticking level sensor in the reservoir. Try tapping on the reservoir with your hand, a rubber mallet, or similar. That usually does the trick. If you can not get it to go off, replacement of the reservoir is the only other option.
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Friday, July 29th, 2011 AT 8:51 PM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
This problem is the coolant level switch in the jug.
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Friday, July 29th, 2011 AT 8:53 PM

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