SERVICE ENGINE LIGHT CAME ON SCANNER SAID LEAN ...

2001 GMC Sierra

Tiny

Anonymous

November, 12, 2012 AT 1:57 PM

Service engine light came on scanner said lean banks 1 and 2 mechanic replaced intake gasket before I pulled out of there parking lot light came back on scanner said same thing he cleared code light came back same reading lean banks 1 and 2. Any ideas

1 Answer

Tiny

hmac300

November, 12, 2012 AT 3:58 PM

Check fuel presure, low pressure will cause this as well as a vacuum leak.

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