Heater not working properly

Tiny
REARDRIVE
  • MEMBER
  • 1997 CADILLAC DEVILLE
  • 4.6L
  • V8
  • 2WD
  • AUTOMATIC
  • 220,234 MILES
What cause my heater to run awhile cut off awhile and back on? ( On and off)
Wednesday, January 16th, 2019 AT 7:17 AM

1 Reply

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hi Reardrive, my name is Alex and I will be helping you today. This sound like a loose connection to me. You might want to check the ground connection where I circled on this wiring diagram. I also am sending a couple of links on how to test the ground as well. Thank you and I hope this helps.

https://www.2carpros.com/articles/how-to-use-a-voltmeter
https://www.2carpros.com/articles/how-to-check-wiring
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Wednesday, January 16th, 2019 AT 7:39 AM

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