Question about 2003 Chevrolet Avalanche
Pressure releases when gas tank cap removed
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Posted on Jan 02, 2017
SOURCE: 2005 avalanche, check eng light
The gas cap must click three times. This is not a sensor problem, more than likely. More than likely something is stuck in the vent line to the charcoal filter. The charcoal filter could be plugged up. This filter is located next to the fuel fill hose. The hose that runs from the fuel fill to the tank. The charcoal filter is a little black box with hoses going in the top. Sometimes you can hit the box and the debris will pass.
Posted on Oct 21, 2010
You have a check light on & pressure when you
remove the gas cap,so the question to you is,
why are you not getting the codes & repairing the
Pretty simple I would say !!
Posted on Oct 27, 2012
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Fig. Fig. 1: Disassembled electric fuel pump
REMOVAL & INSTALLATION
See Figures 2, 3 and 4
Fig. Fig. 4: Removal of electric fuel pump
Fig. Fig. 5: High pressure external fuel pump
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