I have been unable to find a source for the Bilstein rear air shocks on my 2003 GMC Envoy or a part number for the required shocks.
Bilstein makes many shocks, mostly gas type for many vehicles, but not GMCs.
The dealership that sold me the car is long gone and selling Kia's there now.
Has anyone had a similar vehicle with a similar problem?
I see Bilstein gas shocks - not air shocks.
I've purchased parts from GM Parts Direct in the past for my Pontiac.
If you can't determine the part number from their website, if you contact them with your VIN and the part you are seeking, they will provide the correct part number for you.
Also, the catalog lookup on Rock Auto's website is a good way to determine the correct part number as well as cross references for aftermarket equivalents.
Last year I purchased OEM air shocks for my dad's 1996 Buick Roadmaster. I used both GM Parts Direct and Rock Auto's websites to determine the part number but I ended up purchasing them from Amazon for even less.
A good site for Envoy information is http://www.trailvoy.com/
I have not ordered from here, but I know people that have and had no problems
If I remember correctly the shocks for the rear of an Envoy are not air shocks. The rear springs are either coil springs(Trucks WITHOUT Rear Air Suspension) or air bags(Trucks WITH Rear Air Suspension)
I THINK your 2003 GMC Envoy uses the same platform as the 2003 Chevrolet TrailBlazer. If so, maybe you can find what you need under a Chevrolet TrailBlazer listing.