My trucks pulling a lean code ??
My 2000 burb with 200,000 miles just kicked a check engine light and its a lean bank 1 code ??? anyone ever get this ??
Forum Discussion
Mark, sorry I was out of town last week. I looked in the shop manual for DTC P-0171 and here is the diagnostic tree:
The above pics are links so you should be able to see them full size on Photobucket and print. If you want me to email the pdf just PM your email address.
Again this is the 2001 manual for all GM truck SUV, Suburban, Yukon XL, Silverado, Tahoe, Yukon, Sierra, all engines including DMax.
As was noted could be vacuum leak at the manifold, exhaust leak etc. MY $.02, if you are on the original fuel pump it's on borrowed time....I would change that first (since It's likely to go soon anyway) and see if that clears the issue. That is more probable in my mind than an intake or exhaust leak, but hey, I've been wrong before!
The above pics are links so you should be able to see them full size on Photobucket and print. If you want me to email the pdf just PM your email address.
Again this is the 2001 manual for all GM truck SUV, Suburban, Yukon XL, Silverado, Tahoe, Yukon, Sierra, all engines including DMax.
As was noted could be vacuum leak at the manifold, exhaust leak etc. MY $.02, if you are on the original fuel pump it's on borrowed time....I would change that first (since It's likely to go soon anyway) and see if that clears the issue. That is more probable in my mind than an intake or exhaust leak, but hey, I've been wrong before!
