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2005 GMC Sierra 2500 HD 6.6L Poor Fuel Economy
Posted to GM Driveability on 12/18/2010 12 Replies

Customer came in with a 2005 gmc 2500 hd complaining of very poor fuel [...] stated that his 6.6 diesel had suddenly fallen from 16mpg to [...] was scanned and found to have no codes or bad [...] left on trip and upon his return stated that truck was still get...

12 Replies Received (View Replies)

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car Vehicle Data

2005 GMC Sierra 2500 HD

VIN 1GTHK23245
Engine6.6 L / 8 cyl / DIESEL
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Fuel Economy
OccursAlways
Message Closed

car Vehicle Data

2005 GMC Sierra 2500 HD

VIN 1GTHK23245
Engine6.6 L / 8 cyl / DIESEL
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Fuel Economy
OccursAlways