Question about 2001 Cadillac DeVille

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I have a Cadillac Sedan Deville 2001 that will not pass emissions even though a new catalytic converter was put in and 2 new computers. The mechanic is saying that the computer isn't resetting which is causing the emissions failure. I need to get this car inspected ASAP as it's for work. Can you help?

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Simon Atkinson

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You might have to go to a Cadillac dealership to get it reset. Some sections of the computer are locked out so only the manufacturer can fix it.

Posted on Jan 15, 2018


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SOURCE: I need the firing order on a 1996 Cadillac Sedan Deville

Firing order 1-2-7-3-4-5-6-8 ..............1-3-5-7 back of engine near fire wall...........2-4-6-8 front of near radiator

Posted on Dec 10, 2008



  • 118 Answers

SOURCE: have a 2000 cadillac sedan deville have power

Make sure your not low on fluid first
you make have a bad rack in pinion seal on the left side it may be leaking need to get it checked out by pro. thanks good luck

Posted on Sep 24, 2009


Johnny Brown

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SOURCE: what does service emission mean on a 1996 cadillac

it means theres a emission component thats not working. may be a air pump valve if it has one, or a vent valve youll have to scan to figure out good luck.

Posted on Oct 20, 2009

Carlos Solas

  • 293 Answers

SOURCE: emission problem 1996 sedan deville

I would suggest checking your Oxygen sensor which will light up your service emission light. Check that and let me know Good luck

Posted on Dec 28, 2009



  • 3113 Answers

SOURCE: 1996 cadillac sedan deville .. it shows two o2

Get them checked on a scan tool.

Posted on Apr 06, 2010

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