Having problems with your Chevrolet Silverado 2500 ?

Trouble code p0171 . truck runs and idles very poorly

Posted / edited by AnonymousUser on : 03-10-2022

Answers :

Po171 bank 1 fuel trim system lean,the problem with these is the intake manifold gasket it leaks vaccum. will make truck run bad, in the am may be even worse. replace the intake gasket that will solve your problem. ive done a few of them. hope this helps.
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