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2004 GMC Sierra 3500 6.0L Tank Switching
Posted to GM Driveability on 1/17/2017 4 Replies

Good afternoon one of our service trucks has an issue of not changing tanks. It has 2 fuel tanks the gauge never goes above half way and after you drive the truck the fuel light will come on, you can put 15 gallons in the front but the rear tank is always full...

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  Related Documents & Media  2004 GMC Sierra 3500

 
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car Vehicle Data

2004 GMC Sierra 3500

VIN 1GDJK34U64
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsTank Switching
Message Closed

car Vehicle Data

2004 GMC Sierra 3500

VIN 1GDJK34U64
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsTank Switching