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try replacing your gas cap and if that dose not fix it check the filler neck that tube that runs from the side of the truck to the gas tank make sure it is not loose. the reason that that code shows up is because newer cars and trucks have a vacuum on the fuel system and if there is even a slight leak in that system the computer will through that code also you can not top off the gas tank past where the pump kicks off or that will cause that code to show up
What else can I help you with?
What is code 32 in my 1989 GMC Sierra?
GMC code 32 - EGR system Its the system that puts exhaust back into your engine
Where can you find a diagram showing how to install a fuel pump on a 1986 GMC Sierra?
Get a manual on your car.
Code P300 on a 99 GMC Sierra?
multiple/random misfires
What is GMC Sierra computer code PO700?
Transmission control system malfunction
Where to find trouble code definitions for 04 GMC sierra 1500?
If you have the code or codes, just post them here.
How do you find out what a P1870 code means on an 1998 GMC sierra 1500?
Trouble code P1870 means:Transmission conponent slipping
What cid code is P3400 on a 2008 GMC Sierra?
Trouble code P3400 means: Cylinder deactivation system bank 1
How do you fix error code PO 453 on a GMC Jimmy?
check your engine
Remove a fender on a GMC sierra?
how to remove and install fenders on my 1994 gmc sierra
Will a transfer case from a 2001 GMC Sierra fit a 2003 GMC Sierra?
YES.
How do you change the kingpin on a 1995 GMC sierra?
The 1995 GMC Sierra doesn't have kingpins.
What does the code p0441 mean on a 1996 GMC Sierra?
Trouble code P0441 means:Evaporative emission control system,incorrect purge flow
