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2002 GMC Sierra 2500 HD SL 8.1L Poor Fuel Economy
how does a 1/2 of a quart of fuel get into the oil over just 50 miles and not set a code or run any differant. Found the fuel trims to be normal. o2s are switching from lean to rich with out a problem. Coolant sensor is right. air temp is right. the egr is not...
FIX posted 1/25/2012
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Message Closed w/FIX
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16 Replies Received
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Related Documents & Media | VIN | 1GTHK23G22 |
| Engine | 8.1 L / 8 cyl / GAS |
| Trans | 5-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Fuel Economy |
| Occurs | Always |
Message Closed w/FIX
Vehicle Data
2002 GMC Sierra 2500 HD SL
| VIN | 1GTHK23G22 |
| Engine | 8.1 L / 8 cyl / GAS |
| Trans | 5-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Fuel Economy |
| Occurs | Always |
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