When i take off from a stop my rear end clicks then feels like a foward jerking, 2004 GMC safari cargo van.

Don't know the model but this would't be unusual on van / minivan designs.

My guess would be to hold the van body to the frame. I've noticed the manufacturers like using Torx and other patterns that many homeowners don't have in their toolbox.....I'm guessing for safety and litigation reasons.

Sounds like maybe the pinion bearing is starting to wear out or rear end is low of fluid

whats a safari GMC?? just shows you how much i know ---- never seen one but if it fits then your ok ,sorry but very rare machines here in spain ,now ask me about a renault or a peugeot

If your gmc safari cargo van overheats when the ac is on, your radiator and cooling system may be clogged and not working at peak efficiency.

Make sure your radiator cooling fan goes on as soon as you turn the a/c on.

Yes you do have to pull the axle and make sure you put everything back in the same place you removed it from. The ring and pinion shouldn't have to be bothered. You will have to remove the rear end cover to remove the axle. Its very easy to do. There is a pin inside the rear end that has to be removed to pull the axle. Pay attention to how you take it out and put it back the same way. It sounds as if you can do this with no problem.

DO'ES THE VAN TURN OVER ? DO'ES THE VAN HAVE THE FUEL PUMP RUN LONG ENOUGH TO BUILD FUEL PRESSURE?IF YOUR FUEL PUMP AND STARTER ARE WORKING THEN CHECK FOR FIRE TO THE PLUGS. YOU MAY NEED TO GET THE CODES READ TO FIND THE PROBLEM IF YOU HAVE FUEL AND FIRE.ONCE YOU GET THE STORED CODES,REPLACE THE SENDER THAT CAUSED THE CODE OR REPAIR THE WIREING TO IT.

remove panel, if any, check for loose wires, clean and lubicate 

The left actuator arm on your electric hatch has come off.If you go into the rear of the van through the passenger area you can remove the panel around the rear window.Its a bit of a bugger but you can get in there.I know i've done it!

This rear end needs to be replace or re-built


































This rear end needs to be replaced or re-built. The gears and or bearings are worn/shot. May be able to get a complete rear end from a Junk yard for much less, one in good condition. Good Luck