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2007 Escalade, 2005 CTS
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2007 Escalade AWD 133k miles. Have been getting code p0455 lately. Bought a new OEM gas cap and figured that would take care of it as it did in 2011. The code still comes back 2 to 3 days after clearing it. And then last night it threw a P0420. I do most of my own work but dont have a lift etc. Any ideas from the experts out there?
 

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Cadillac Escalade 2008 and Cadillac SRX 2011
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24 Posts
Just went to the shop (Undercover Auto, NJ) & he mentioned that there might be a leak. He has my truck now. I will update later this week.

DB
 

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Cadillac Escalade 2008 and Cadillac SRX 2011
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So, l got a new OEM cap & l think that did it. Normally the code would come on in a couple of days. Sisnce he turned it off, no codes. Try the OEM cap after you clear the codes brother.

DB
 
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