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GM Fuel Pump Diagnosis
I have a 05 Cadillac sts that is running lean at all times.
After eliminating vacuum leaks, MAF sensor, O2 sensors,
etc.. I found that it has low fuel volume. I need to know if
I should replace the fuel pump based on my tests below. 
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| VIN | 1G6DC67A25 |
| Engine | 4.6 L |
| Trans | 5-speed Automatic (Electronic) |
Vehicle Data
2005 Cadillac STS 4.6L
| VIN | 1G6DC67A25 |
| Engine | 4.6 L |
| Trans | 5-speed Automatic (Electronic) |
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