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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  • Cadillac Master
  • 1,117 Answers

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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Posted on Jan 02, 2017

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  • 341 Answers

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

johnjohn2
  • 5763 Answers

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

  • 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

honeymokey
  • 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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2 Answers

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4 total. 1 each manifold. Then 1 before, 1 after the CAT. You should be able to count and trace them from the connections on the top of your engine. Good luck

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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

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