AWD VAN LIFT
Right now one of the few lift methods for the GM AWD 1500 Van is some Torsion lift keys and longer front shocks like Bilstein 5100 #24-186643 made for key lift's, the AWD Van front suspension lift stuff all interchanges with a 99-06" 1/2 ton GM P/U SUV. The 99-06" rear shocks in those kits have a different top mount that wont work, and it is valved wrong anyway. Rear springs on most GM vans p/u's and suv's are all 2 1/2" wide so 1-2" rear lift blocks are easy to find, GM put 7/8 or 1-1/8" blocks on 1/2 ton 4x4 for decades, get new U bolts. The 92-99" 2900lb 3/4 ton suburban rear springs work well for many people. I use longer HD 4600 series rear shocks #24-221948 they are tuned for a 3/4-1 ton GM van and at 2.33" longer than your stock 1/2 ton shocks are perfect for a 3" lift ...... It's a proven combo here with Bilstein shocks that gives between 2 1/4"-3" front and 3" rear lift, a few people including myself have had great results, not many other options out there. I also added Z-71 front bumpstops and a Hellwig rear sway bar, it seems like a very well sorted package indeed........
Bilstein did give a rare recommendation for the HD 4600 rear/ 5100 front combo for the van, both offer more control than stock shocks. He said the 4600 series and 5100 series Bilsteins are the same shock other than the body of the 5100 is aluminum and it comes in more special lifted applications, and they DON'T make a 5100 shock for the rear of any GM van, just the 4600 for the stock height 3/4-1 ton van.
The 5100 series #24-185615 rear shock is not recommended by Bilstein for a heavy van it is valved to light, it will bolt on but is a little long for the rear at 5 1/2" longer than stock and considering 3" is max lift in front. Bilstein will valve shocks for customers and I think Agile offroad and Boulder offroad may have done so for their GM Van shocks..........
Don't use front shock spacers some kits come with or rear adapters (needed for 99-06" P/U SUV rear shocks in most kits) they make the shock to long, unless you lower the bumpstops. Me and others have smashed our shocks closed and broke things and now run the right shocks.......
Love the double doors!!!!!!!