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What does the p1174 code indicate on a Chevy Uplander?
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The P1174 code on your Chevy Uplander indicates that the engine's control unit is unable to adjust the fuel level for a specific cylinder, leading to a misfire. This problem could be due to faulty wiring or a malfunctioning injector. Replacing the injector may fix the issue, but cleaning or repairing the wiring harness and connector could also be effective solutions.
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Typically, when a Chevy Uplander displays a P1174 code, it indicates that the fuel trim system has detected an imbalance in the air/fuel ratio between cylinders in each bank, which could lean towards being either too rich or too lean.
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