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International Automotive Technicians Network
2011 Chevrolet hd3500 6.6L Poor Fuel Economy
Posted to GM Driveability on 7/12/2011 9 Replies

this truck has me so frustrated, every time i leave the state the def system lets me down and cannot finish my trip home without issues,truck was reflashed in springfield [...] shutting down the vehicle speed to50mph i added 2.5 gal of def fluid with no help f...

9 Replies Received (View Replies)

 
Message Closed w/FIX

car Vehicle Data

2011 Chevrolet hd3500

VIN 1GC4K1C88B
Engine6.6 L / 8 cyl
DeliveryFuel Injection / diesel
EmissionsOBD-II Compliant
SymptomsPoor Fuel Economy
OccursUses 2 Much Def Fluid
Misc.Diesel Exhaust Fluid
Message Closed w/FIX

car Vehicle Data

2011 Chevrolet hd3500

VIN 1GC4K1C88B
Engine6.6 L / 8 cyl
DeliveryFuel Injection / diesel
EmissionsOBD-II Compliant
SymptomsPoor Fuel Economy
OccursUses 2 Much Def Fluid
Misc.Diesel Exhaust Fluid