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2004 GMC Sierra 2500 HD 6.0L Poor Fuel Economy
Vehicle fuel mileage has dropped off. I used to get 14-16 miles per gallon in the city, now its down to 10-11. Any suggestion before i start replacing parts. Engine runs perfecly fine.
FIX posted 5/26/2008
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Related Documents & Media | VIN | 1GTHK23U94 |
| Engine | 6.0 L / 8 cyl / GAS |
| Trans | 5-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Fuel Economy |
| Occurs | Always |
Message Closed w/FIX
Vehicle Data
2004 GMC Sierra 2500 HD
| VIN | 1GTHK23U94 |
| Engine | 6.0 L / 8 cyl / GAS |
| Trans | 5-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Fuel Economy |
| Occurs | Always |
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