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Check engine warning light

Tiny
CLEARGLIDE
  • MEMBER
  • 2003 CHEVROLET TAHOE
Engine Performance problem V8 Two Wheel Drive Automatic 40000 miles

Since it has turned cold, the check engine light remains on until the ambient temp rises to over about 36F. Sometimes it stays on days. The computer code indicated that the both cylinder banks are running too lean. Chevy dealer said the intake gaskets are leaking and need to be replaced to the tune of $650. Am I getting ripped off here?
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Thursday, January 7th, 2010 AT 8:09 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
If they are leaking, no. But, are they sure that is the problem?

Let me know.
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Friday, January 22nd, 2010 AT 9:52 AM
Tiny
BDOML
  • MEMBER
  • 4 POSTS
After you start the truck let it warm enough so there is no a lot of smoke out of the tailgate. Pour some water over the gaskets (just over the fuel rails) if you see a bunch of smoke start to come out of the tailpipe they are leaking.
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Saturday, January 6th, 2018 AT 3:42 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Hello,

That is an interesting way to look for a vacuum leak. Some use smoke others carb spray the water and steam thing is new nice work.

Please feel free to help out whenever you are on the site :)

Cheers, Ken
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Monday, January 8th, 2018 AT 1:52 PM

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