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1992 GMC C1500 Sierra SLE 4.3L Poor Fuel Economy
this one has me stumped. the truck starts up and idles great, good performance and power, it averages 18 mpg in city however the mileage drops to 13 to 15 mpg on steady highway driving. average 75 mph. the check engine light comes on after aprox. 30 min of fla...
FIX posted 6/28/2004
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Related Documents & Media | VIN | 1GTDC14Z7N |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | FI / tbi |
| Emissions | ca emissiions |
| Symptoms | Poor Fuel Economy |
| Occurs | Cruise |
Trouble Codes
| 44 | lean exhaust |
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Vehicle Data
1992 GMC C1500 Sierra SLE
| VIN | 1GTDC14Z7N |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | FI / tbi |
| Emissions | ca emissiions |
| Symptoms | Poor Fuel Economy |
| Occurs | Cruise |
Trouble Codes
| 44 | lean exhaust |
Video