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MAF and high fuel trim
This vehicle came in with codes P0171 and P0174, freeze frame records showed max. positive fuel trim. Fuel pressure is perfect during test drive, O2 sensors are original but fast and no O2 codes. Total vehicle miles 80K. The longer I drive it, the higher the f... Login to read more. 
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24 Replies Received
24 Replies Received
| Engine | 4.3 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2000 Chevrolet Silverado 1500 4.3L
| Engine | 4.3 L |
| Trans | 4-speed Automatic (Electronic) |
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