Replacing Air Springs aka Air Bags with Coil Springs. My How To - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum

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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 Brakes, Suspension, Wheels and Tires > Suspension

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Old 08-29-2010, 11:09 PM
KnightWolf09's Avatar
KnightWolf09 KnightWolf09 is offline
Junior Member
2002 GMC Envoy SLT
Pewter Metallic 4.2L I6 2WD
Join Date: Apr 2010
Location: New Orleans, LA
Posts: 24
This was done originally here: ement
See link for pics.

I wanted to make sure people could find it. This was the approach i used following the advice of some trailvoy membes. Please be careful when attempting and always put your safety first.

So I got the springs and the insulators and time. It was time to get started. Here's what I had:
Tahoe springs (z71?) from ebay- $50 + shipping
rubber insulators (x2) from dealership- $10

So step 1: jack it up as high as you can. used the jack that came with my voy and just turned it as much as I could on one side, put it on a jack stand and did it on the other side. had to lower it a little bit to the stands.

Step 2 (for me anyway): drop the spare tire. i got it out of the way to have more room to work with.

Step 3: unhook the shocks at the bottom. this will give you some extra inches when trying to put the coil springs in. (this may be easier to do before jacking it up)

step 4: RIP OUT THE AIR SPRINGS. you have to turn the bags to unlock them. then disconnect the air lines. I just cut them. (POINT OF NO RETURN)

Step 5: put the coil springs with rubber insulators between the axel and frame

step 6: reconnect the shocks and lower your trailvoy

step 7 (for me): pull the compressor fuse. I did this because my compressor is about to die anyway

I'm so happy to finally have this done. No more bouncing and bucking like a bronco. Plus the height is added bonus!

Thanks to: The Roadie for pointing me to the springs, gmac310 for the how to pics, and all Trailvoyers who posted their expeirences

Special Thanks to: midcity50470119 for your help/labor
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