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Service engine light and check gas cap light will not turn off

Tiny
MORIARTYSTL
  • MEMBER
  • 1999 CADILLAC DEVILLE
  • V8
  • FWD
  • AUTOMATIC
  • 83,000 MILES
I have a 1999 Cadillac Deville (base). The "check gas cap" sign came on in my car. I bought a new one but the sign is still on. When that light came on the "service engine soon" sign also came on, they both are still on is there a way to turn them off?
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Saturday, November 27th, 2010 AT 2:43 PM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
The light has to be removed by using an engine scan tool. The gas caps have to have three clicks after fueling. It cold be an evap problem as well. The only way to fix it is to get it scanned, any auto parts store can do this.
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Saturday, November 27th, 2010 AT 3:09 PM
Tiny
MORIARTYSTL
  • MEMBER
  • 2 POSTS
Thank you for your response, I will go get it scanned this morning
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Saturday, November 27th, 2010 AT 3:17 PM

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