Hose does not go in pass the neck? Purchased a siphon pump with hose in / hose out, hand pump in between.

Siphoning gas out of a vehicle can be a hazardous and potentially dangerous task. Additionally, it may be ******* in some jurisdictions. If you need to remove gas from your 2002 Chevrolet Avalanche, it is recommended that you consult a professional mechanic or automotive technician for assistance.
If you still choose to proceed with siphoning the gas yourself, here are some general steps to follow:

1. Park the vehicle on level ground and turn off the engine. Be sure to engage the parking brake.
2. Locate the fuel tank. In the case of your 2002 Chevrolet Avalanche, the fuel tank is located underneath the truck bed.
3. Locate the fuel line. This is the hose that connects the fuel tank to the engine.
4. Insert a siphoning hose into the fuel tank through the fuel filler neck. Make sure the hose goes all the way to the bottom of the tank.
5. Use a manual pump or a vacuum pump to start the siphoning process. Be sure to follow the manufacturer's instructions for the pump you are using.
6. Once the fuel starts flowing, make sure to keep the siphoning hose lower than the fuel tank to maintain the flow of gas.
7. Continue siphoning until you have removed the desired amount of gas from the tank.
8. Once you are finished, remove the siphoning hose and dispose of the gas in accordance with local regulations.

Again, please exercise caution when attempting to siphon gas from your vehicle, and consider seeking professional assistance to avoid any accidents or legal issues.

youtube that.for sure. drain gas tank car, and watch vast do it.

we have no Holdens in USA but all cars have generic answer EFI
i guess petrol tank, right? (fuel not told)

• step 1 depressurize fuel rails, by pulling fuel pump fuse running engine, or by the words in the service manual.
• we drain the tank, at filler cap, off, using a hose , google how to siphon fuel safely, gets out 90%^ or so.
• using eye protection, we remove all lines to the tank if can reach them, (and filler neck pipe/hose if not easy do below steps.
• with jack on tank bottom (and buffer , of wood) lift tank to zero load. the unstrap the than and drop it to get to all lines and hoses. by hand, I mark them all tagged with names or numbers so not get fooled later now all lines are off drop the tank to the ground jack.
• done. be safe the raw fuel,

some auto stores have hand fuel pump to pump the filler neck and down drive. or siphon hose special for the job to avoid drinking fuel.
ask them first for tools to help.

same as most cars like this....
the FSM book covers that.
it says to use drain a hose on the filler hose. (most cars)
and use siphon hose, or hand pump to hand pump it dry.

the dealer has 2 ways, using their scan tool , they open the system and turn on the fuel pump until dry. (fuel hoses to a bucket? after depressurizing steps, in the FSM stated.)
or they use a PRO grade, fuel draining system. that does this.

at home, you have 2 choices. a hose with siphon hose bulb.
or hot wire the pump. (risky making sparks with fuel; no?)

the FSM book covers this. (ill do the full tank pull... as you never said the JOB!)
its siphoned to near empty. (use a hand pump for fuel , sold at all boat center)
do you need the FSM page quotes?
on some cars there is an anti-spill roll over check valve
at tank fill port making siphoning very hard.
my answers are USA cars, on this USA forum.... and swifts vary big time world wide..... dig?

quoted. (no smoking no open flames, outdoors best. no shop heaters of ANY KIND near)
"tank pull steps. (sure drained)

1. Before servicing the vehicle, refer to the Precautions section.
2. Relieve the pressure from the fuel system. (in the FSM)
   
3. Disconnect the negative battery cable.
4. Remove rear seat cushion.
5. Disconnect connectors of fuel tank wire harness.
6. Hoist vehicle.
7. Disconnect fuel tank filler hose and breather hose from filler neck.
8. As fuel tank has no drain plug, drain fuel tank by pumping fuel out through fuel tank filler or fuel tank inlet. Use hand operated pump to drain fuel tank.
9. 1. Disconnect fuel pipe joints and fuel hose from pipes. For quick joint, disconnect it as follows:
      
      • Remove mud, dust and/or foreign material between pipe and joint by blowing compressed air.
      • Unlock joint lock by inserting special tool (part No. 09919-47020) between pipe and joint.
      • Disconnect joint from pipe.
   2. Remove fuel tank from vehicle.

You can't. There is a roll over valve/ball in the neck of the tank preventing a siphon hose from entering the tank

As far as draining the fuel, there are two methods I have used. Hand operated pump with a long enough hose to reach in through the filler neck from the fuel door is one method, but requires a lengthy hose to get the job done. A second method that also works is pop the fuel lines off of the tank (you\'ll see it in the video) and attach a snug fitting siphon hose to one of the tank connection points on the fuel pump assembly. Using your pump, suck it dry into a safe container. You Will have gas spill from the lines when you disconnect them, be ready.

The FSM is clear on this. each hose and fitting must be air tight.
or the the car vents gas fumes full time, and the EVAP ECU tests
(monitor) make sure this all works.
you can just look at the left and right side above rear tires. and see
if your hands are small enough to fit here. Id bet not.
some mech, report, the tank can be tilted down at front (drained fuel)
and gain access.
keep in mind, you get fuel siphoning at any time. do not open the system, with fuel in the tank, and then drive to autozone,
i loosen the gas cap so that pressure can not build in tank.
expanding fuel can push fuel out , during a filter change. very
dangerous in a garage, and you gone.
it's just a vent hose, you can see, it and what needs to be done is really obvious. given you arms sides and lenght.
my fsm states, " TANK pull"

Removal & Installation

1. Relieve the fuel system pressure and disconnect the negative battery cable.
   
2. Remove the fuel filler cap from the fuel tank.
   
3. Have a Class B fire extinguisher near the work area. Use a hand operated pump device to drain as much fuel through the fuel filler neck as possible.
   
4. Use a siphon to remove the remainder of the fuel in the tank by connecting the siphon to the fuel pump outlet fitting.
   CAUTION Never drain or store fuel in an open container because there is the possibility of a fire or an explosion.
   
5. Reinstall the fuel filler cap.
   
6. Remove the rear seat cushion from vehicle (if so equipped).
   
7. Disconnect the fuel pump motor connector and sending unit electrical connectors.
   
8. Disconnect the wire harness grommet and harness through the vehicle floor pan.
   
9. Raise and safely support the vehicle.
   
10. Remove the fuel filler hose clamp from the filler neck assembly.
    
11. Remove the fuel breather hose clamp from the filler neck assembly.
    
12. Remove the fuel filter inlet hose clamp and hose from the filter.
    NOTE A small amount of fuel may be released after the fuel hose is disconnected. In order to reduce the chance of personal injury, cover the fitting to be disconnected with a shop towel.
    
13. Remove the fuel vapor clamp and hose, and fuel return hose clamps and hose from the respective fuel lines.
    
14. Using a suitable transaxle jack, support the fuel tank.
    
15. Remove the fuel tank retaining bolts and lower the tank.
    

To install:

1. Reconnect all fuel hoses, lines and the fuel breather hose to the fuel tank.
   
2. Place the fuel tank in its proper space using the transaxle jack, Install the fuel tank retaining bolts.
   
3. Remove the transaxle jack.
   
4. Reconnect all fuel hoses, lines and the fuel breather hose to the fuel tank.
   
5. Install the fuel breather hose and hose clamp to the filler neck assembly.
   
6. Install the fuel vapor hose and hose clamps. Install the fuel return hose and hose clamp to the respective fuel lines.
   
7. Install the fuel filter inlet hose and hose clamp to the filter.
   
8. Lower the vehicle. Install the wire harness and grommet through the vehicle floor pan.
   
9. Connect the fuel pump motor and the sending unit connectors.
   
10. Install the rear seat cushion. Reconnect the negative battery cable.
    

"

First, put a jack up under the fuel pump. then remove the two straps that hold the fuel tank or their might be a skidplate you have to remove first. when removed, slowly let tank down slightly so you can get to the fuel lines. there should be two lines and one hose. there might be more, if so just remove them. then remove the filler neck hose clamps and pull the hoses off of the neck where the gas goes in. then there should be one or two connectors. after that it should be safe to lower and set on the ground. then remove the fuel pump by either unscrewing a cap on the top of the pump or sliding a ring around until it comes off. then pull the old pump out and put the new one in. i recommend a fuel pump assembly over just the pump because the assembly wires become corroded or brittle and will sometimes be the reason your fuel pump doesnt work. install is reverse of removal.
P.S. check under your back seat or in the trunk under the carpet to see if you have a service panel for your fuel pump. if so then just take that off and you can pull the pump out without dropping the tank.

yea theres a screen so no one can steal your gas u hsve to disconnect the filler neck to get the gas out

as you are pushing the hose in the tank twist the hose so it rolls over and it should go in, the hose will probably need to be three feet long, you may have to go to lowes or home depot and get a longer hose that will also fit the siphon pump