PNWYukon
Full Access Member
Have been reading that many people corrected their P0171, P0300 and P0131 codes by replacing the intakes gaskets. These have TSB's even and is a know issue. Has anyone on here had to do this to correct these codes?
Intake Gaskets on 5.3l Ls
- Thread starter PNWYukon
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David Paul
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PNWYukon
Full Access Member
Did not need to replace intake gasket to clear up the codes.
David Paul
Full Access Member
So how did you correct the problem that caused the codes?
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PNWYukon
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Replaced the 02 sensor bank 1 sensor 1, cleaned MAF sensor, replaced plugs and wires and added ACDelco fuel treatment. After I was done, I cleared the codes and drove it around for awhile. It has been 8 days with no codes or bad idle...
David Paul
Full Access Member
Nice....plugs on mine are new, less then 1000 on them. Cleaned the MAF and used fuel treatment..cleared code P0171 and am waiting myself to see if it returns.
