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GMC 2003 DURAMAX - Filling Your Tank

GMC 2003 DURAMAX
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Filling Your Tank
The fuel cap is located behind a hinged door on the
driver’s side of your vehicle.
For chassis-cab models, refuel the front tank first, or in
instances when only a partial fuel fill is desired. An
automatic transfer mechanism will maintain
approximately equal fuel levels in both tanks, so no
switching is required by the operator.
While refueling your vehicle hang the tether from the
hook on the filler door.
5-12

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