On a 1991 silverado do I have to put the shield back on the gas tank I have a bigger tank and my shield will not fit

SOURCE: 1991 jeep wrangler gas leak

Hello everyone,l

For those of you who haven't started removing the gas tank, I'll start from the beginning.
You will need a 1/2" socket, ratchet, extensions, flat head, needle nose, floor jack, rag, broomstick,. A creeper will make this easier. Depending on your dimensions and the height of the frame on your particular vehicle, you may be able to use it without jacking the vehicle up..

• Disconnect the negative battery terminal
• If your engine is fuel injected, you need to relieve the line pressure. This is done from the injector rack on top of the engine. About the center of the rack you will find what looks like a filler valve on your tire, only thicker. The fuel line can maintain over 40 P.S.I. pressure even with key off. Place a rag over the pressure relief valve. Use the corner of a screwdriver to poke the center core through the rag. A second or two should do it.
  
• Place a floor jack under the gas tank shield, jack it up until snug.
• Disconnect the rear exhaust hanger.
• Loosen and remove the three shield nuts above the rear end
  
• Remove the plastic shield from beneath the left rear corner. Two plastic anchors hold it on. Disengage them by pulling the center plug out about 1/2". This will expose the hoses connecting the tank to the body.
  
• Loosen the hose clamps
  
• If you can get them to twist, try and get them off.
  
• Rear nuts next. Loosen and remove all but the center one.
• Make sure the jack is centered and snug
  
• Remove the last nut. The tank isn't going to DROP. It will kind of lean, and jam against the exhaust.
• Insert the broom stick into the exhaust pipe.
• Push and hold it to the right, slowly let the jack down. Stop if it hangs up and work it free.
• When its down far enough to access the top of the tank, disconnect the plug, loosen thew hose clamps, remove the hoses, separate the vent hoses at the 'T' connector.
• Lower it the rest of the way
• The tank can now be separated from the shield.

SOURCE: 2007 chevy silverado slow filling gas tank

vent tube must be blocked off, check the tube first, thanks robert b.

SOURCE: can't put gas into 2004 silverado

tank has a check valve in entrance to tank some are in the filler hose some are in the tank neck where filler hose goes onto tank ,remove hose to check it some holes are only the size of 25c where check valve flap is(this causes lots of problems another great idea from gm)

SOURCE: my 2005 silverado 5.3 fuel problem i think

Sounds lik a fault with the fuel pickup pipe, will require petrol tank investigation.

SOURCE: The heat shield underneath the gas tank broke off.

NEED HEAT SHIELD PROTECT GAS TANK FROM HOT EXHAUST PIPES.GO TO SALVAGE YARD FIND HEAT SHIELD.IF YOU CANT FIND ONE.CHECK OTHER GARAGES OR GO ONLINE INTERNET FIND ONE CHEAPER.I WOULD NOT DRIVE CAR WITH OUT HEAT SHIELD PROTECTING GAS TANK.SINCE GAS TANK IS PLASTIC.