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GM FPCM P2635
I've seen this twice now and haven't seen much info on it. After an aftermarket fuel pump install on the above vehicle, the actual fuel rail pressure is about 50 psi and the desired fuel rail pressure is 43.5 psi at idle. Actual and desired pressures match goi... Login to read more. 
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| Engine | 5.3 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2008 Chevrolet Silverado 1500 LT 5.3L
| Engine | 5.3 L |
| Trans | 4-speed Automatic (Electronic) |
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