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1999 Chevrolet Silverado 1500 5.3L Poor Fuel Economy
Posted to GM Driveability on 11/27/2005 25 Replies

Have been steadily loosing gas milage. Use to get 21mpg plus until about 2 yrs ago. Then checked one day and it was down to 19 at several checkings. This summer down to 17.5 to 18. Now down to 16.8 last two checkings, no air conditioning running. Have put a ha...

25 Replies Received (View Replies)

  Related Documents & Media  1999 Chevrolet Silverado 1500

 
Message Closed w/FIX

car Vehicle Data

1999 Chevrolet Silverado 1500

VIN 1GCEC19T3X
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Fuel Economy
OccursAlways
Misc.MIL Off
Message Closed w/FIX

car Vehicle Data

1999 Chevrolet Silverado 1500

VIN 1GCEC19T3X
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Fuel Economy
OccursAlways
Misc.MIL Off