2003 GMC Sierra "gas cap" Questions

...gas cap a bunch of times and are like what the heck. The gas cap DIC warning is part of the evaporative system to reclaim gas vapors. The onboard computer on the truck monitors the gas tank vapor ...

...gas cap shortly after my check engine light appeared so at the next stop i tightened the gas cap and turned the truck off and turned it back on with the light still appearing. this happened on a ...

Gas Cap not sealing and leaking. This will generally throw an EVAP code of some sort. Try resealing your gas cap, and if that doesn't work, try replacing your gas cap. They fail pretty often, actually

2) P0441 Evaporative Emission Control System Incorrect Purge Flow with p0441 did you replace the gas cap on all the way? that will cause this code every time. and or have you ever replaced the gas cap

...gas cap so i replaced it still tells me to tighten gas cap after first start up 2005 gmc 1/2 ton 5.3 hi you will need to take to a dealer to get diagnostic machine put on the remove the error in the ...

...gas it may mean you didn't close the cap properly. Another cause could be the cap is no longer maintaining the correct pressure (you'll need to either test or just buy a new cap for $5-10) Worse case ...

...wont start when its wet outside and its smells like there is gas in my oil... youve got a cracked distributor cap and you need a complete tune up , thats plugs wires rotor button and distributor ...

tighten gas cap message, check engine light is on Replace the fuel cap.

gas but does not have any spark. i have inspected all fuses and relaysll i had same problem distributer cap had moisture problems sounds crazy but i put my trouble light on top of cap 1 hr later truck

...and rear O2 sensors reading aprox. 385mv and ohms for heaters meet specs according to chilton manual. Wondering if problem is actually with fuel injectors. NEW GAS CAP same thing on 99 Tahoe GAS ...