p0171 p0174
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P0171 & P0174, Fuel Pump?
07 Yukon 5.3 Engine started to bog down and die when coming to a stop, then it would restart and shift hard upon acceleration. Service stabilitrack came on then the CEL. Pulled codes P0171 and P0174. Checked fuel pressure it was 52psi with key on, when started it went to 50psi then dropped to...- bowtiegurl
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- fuel pump low fuel pressure p0171 p0174
- Replies: 4
- Forum: Engine & Drivetrain
