How do I move the middle seatbelt when I fold the seat down?

first o all you pull up the two black pull knobs on the top of the back rests secondly you pull the black handle in the middle at the back of the seat to move them forward thirdly pull up the red lever and this will unlock the seats thenpick them up and fold them forward

I agree with the above comments. I just had this same problem. Holden (Australia) quoted me AU$650 to fix it. I bought a T50 torx bit (like an Allen key)from supercheap auto for $11.
raise the seat back up as much as you can (I could only raise mine about 20 inches). Wriggle your hand in and find the bottom bolt of the seat belt clip (this will be the seatbelt clip for the side seatbelt) and start undoing it. It isn't hard, just fiddly considering you probably won't be able to see what you are doing. Once undone, you will be able to raise the seat.
I was still unable to loosen my middle seatbelt immediately. I came back to it a while later and it had freed up.
Simply a matter of then bolting it back in place. It was so easy - and I'm just a middle aged woman with no handyman/car skills whatsoever!

That just happened to our 05 equinox. We have car seats so one of the seats was reclined just a bit. This will cause the seatbelt to lock. We took out the car seat, folded down the other seat and folded it back. It cause the locked seat to release and unfold.

middle seat belt shouldn't have anything to do with it. The seat locks down for stowage in the rear cargo area. you can pull the release handle on the back of the seat to release it back into the up position.

I think you have to remove headrst bfore folding seat back down. You may have to unbolt seat from floor. 4 bolts.
Rear Seat Backrest —Split Bench Removal
NOTE: The 40% rear seat backrest must be removed before the 60% rear seat backrest.
40% rear seat backrest

1. Remove the 40% rear seat backrest.
   1. Remove the nuts and bolts.
   1. Remove the backrest.

60% rear seat backrest

1. Remove the 60% rear seat backrest.
   1. Remove the nut and bolt.
   1. Remove the backrest.

Installation
NOTE: The 60% rear seat backrest must be installed before the 40% rear seat backrest.
60% rear seat backrest

1. NOTE: Do not tighten the nut and bolt at this time.
   Install the 60% rear seat backrest.
   1. Install the rear seat backrest.
   1. Install the nut and bolt.

40% rear seat backrest

1. NOTE: Do not tighten the nuts and bolts at this time.
   Install the 40% rear seat backrest.
   1. Install the rear seat backrest.
   1. Install the nuts and bolts.

60/40% rear seat backrest

1. Tighten the 60/40% rear seat backrest nuts and bolts in the sequence shown.

40% Rear Seat Backrest

1. Tighten the 40% rear seat backrest nuts and bolts in the sequence shown.

They have a problem with the seatbelt retractor getting jammed up causing the belt to jam & not let the rear seat fold back up.The easiest way to get the seat back up is to cut the seatbelt & fold up the seat.Then the rear seat needs to be disassembled to gain access to the seatbelt retractor assy which has the seat belt made on.Hopefully it's still under warranty or Ext. warranty.hope this helps

fold rear down take outter seat off one twelve bolt at bottom remove clps and pck tray YOU GOT IT

i dont think they were meant to fold down but you should be able to take them out to haul bigger items. some of the vans they make are made that way so that you have to remove the seats rather than fold them down

I had the same problem on my '03. The seats would not fold down using the latch release as I had always done. So I tried a combination of pulling up on the side latch AND the top latch and the seat folded down. It really doesn't FIX the problem but circumvents offending  defective part. I will use this method until it doesn't work then I might shell out the $$$$$ to the dealer.