Unable to remove gas cap on my dyna

try applying the pressure with water pump pliers if you have the room to work with them around cap

disconnect hose at tanks petcock, replace with a longer hose to drain gas into gas can, turn petcock on & let it drain until empty

You did of course press it down to releave pressure of the spring? I think I would spray a little WD-40 on it.

Give it a try ... Good luck.

InInside the drivers door in the back of the storage compartment is the switch to open the fuel door.

I have a 92 apv with a 3.8 and changed the fuel filter about a year ago. It is located underneath the vehicle on the right (drivers) side, just forward of the gas tank. I bought a new filter and just by matching up the part with the in-line filter found it pretty easily. The are several lines from the tank that run the length of the vehicle to the engine compartment and you shouldn't have a problem spotting the filter. There are a pair of tabs on the filter that need to be either compressed or opened (I can't remember which) and then twist turn the filter, and gently pull the filter off. If you have to open the tabs you may need a flat tip screwdriver to do so, I just don't remember if I needed one, or if there might be a screw mounted clip underneath holding up the gas line. Be careful not to put too much strain on the gas line as you work with it because it could snap. All I did to prep this procedure was to remove the fuel filler cap from the gas from the tank (as in when you gas up) to relieve any pressure that might be in the tank. You will have some gas leak out of the gas line when the filter is removed, so I just had some shop towels handy to allow the gas to soak into them. I did this outside, so if you are working in a garage, have the overhead door up to avoid gas fumes build-up. The new filter goes in very smoothly. Insert in the same position that the old one came out, twist into place, and the locking tabs should pop right into place. Wipe up all the spilled gas and re-install the fuel filler cap, and you should be good to go. This replacement only took me several minutes.

unfortunately most fuel tanks are made so you can no longer siphon gas through the fill tube. if you want the fuel that badly you could disconnect the fuel line from the fuel filter and wait for it to drip out.

The bad gas cap is related to the evaporative emissions what happens is the gas that is not used in the engine return to the tank via the 2nd hose. The tank is pressurized very lightly by this and a sensor detects whether or not the air escapes. So if the cap is loose or there is a leak in a hose the code will set. Since you also have a leak I would start there first. The straps most likely are not cutting the tank the epa would have a fit. Most likely the the gas is coming from above the tank and working its way down the straps. Lowering the fuel tank requirs raising the car quite high. If you are able to inspect the area and reach it I think the leak would be in the gas lines above the tank. Or from the filler tubes when you fill with gas. If you can see the gas leak but are unable to reach it take it to a shop. This may fix the light if not a shop with a (smoke machine) will pump smoke into the system and search for air leaks that way. Good luck .

Check the fuel tank vent pipe or replace the cap with a vented cap.

if the gas cap is plastic you may be able to distort the cap enough to get it to unlock
the only other thing I can think of is to either drill a 30 to 40mm hole into the cap and put your finger in to release the catch or just destroy the cap and buy a good 2nd hand one and have it colour matched to your paintwork
They are the only solutions I can think of for your problem