How To Replace Rear Air Suspension Compressor 2002-09 GMC Envoy
Created on: 2014-09-08
Check out this helpful video from 1A Auto showing you how to replace the rear air suspension compressor on your 02-09 GMC Envoy.
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step 1 :Removing the Air Compressor Fuse
- Open the fuse box
- Pull off the fuse cover
- Find the ECAS fuse
- Pull off the ECAS fuse with pliers
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step 2 :Lowering the Spare Tire
- Raise and support the vehicle
- Put the jack pipe into the tire lowering hole
- Turn the jack pipe counterclockwise to lower the spare tire
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step 3 :Removing the Air Compressor
- Disconnect the air compressor wiring harnesses
- Disconnect the air compressor hoses
- Remove the two 13mm bolts from the air compressor
- Pull down the air compressor past the spare tire
- Loosen the top two compressor hoses with a 10mm wrench
- Let the air exit the compressor
- Disconnect the top two compressor hoses with a 10mm wrench
- Pull down the compressor
- Pry the fittings off the top compressor hoses
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step 4 :Installing the New Compressor
- Loosen the hose fittings on the new compressor
- Connect the top compressor wiring harness
- Put the white hose into the white ring fitting
- Put the black hose into the black hose fitting
- Tighten the hose fittings
- Push the compressor into place, around the spare tire
- Insert the two 13mm bolts into the compressor
- Connect the compressor hoses
- Connect the compressor wiring harnesses
- Clip the wiring harness into place
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step 5 :Reinstalling the Air Compressor Fuse
- Push the ECAS fuse into place
- Put on the fuse cover
- Close the fuse box
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step 6 :Testing the Compressor
- Lift the spare tire with the jack pipe
- Put away the jack pipe
- Lower the vehicle to the ground evenly
- Start the vehicle to check that the compressor works
Tools needed
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13mm Socket
Flat Blade Screwdriver
Jack Stands
10mm Wrench
Ratchet
Floor Jack
Needle nose pliers
Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.
Hi, I'm Mike from 1A Auto. I hope this how-to video helps you out, and next time you need parts for your vehicle, think of 1AAuto.com. Thanks.
In this video we're going to show you how to replace the air compressor on this 2003 GMC Envoy XL. The items that you'll need for this are a new air compressor from 1AAuto.com, a flat blade screwdriver, a 13mm socket and ratchet, 10mm wrench, jack and jack stands, and a pair of pliers.
Open your fuse box by pushing these tabs. Set that aside, and then lift up this panel. You want the ECAS, which is the number 1 on this vehicle, which is right here. That's this one right here. You're going to want to jack up and support the rear of your vehicle. You want to jack up underneath the axle, and then you put the jack stands underneath the rear frame rails. Then go into your jack tools, that are in your back here, and pull out the three or four sections of the jack pipe. Then, you insert it down into this hole and there's a square receptacle that the bar goes over. Then you use the tire iron section of your jack and turn it counter clockwise. This lowers your wheel. You want to lower it as much as possible. We were only able to lower it a little bit.
Now, disconnect the harness by pressing the tab and pulling. Pull the harness clip from the frame. Then, you want to disconnect this. You push the hose, in and then you push down on the connector around the hose, and pull the hose free. Then, for this one, do the same thing. You push the hose in, and then you kind of squeeze and pull on that grey connector, and pull apart. Then there's also a connector that you can either just pry apart or pry it from the frame. Then remove these two 13mm bolts. Now unhook the compressor and pull it down. Once you get it to a certain point, you just want to angle it downward. Then it will pull out around the wheel. If you can remove your spare tire, that will help. Because of the condition of ours, we can't really do that. Using a 10mm wrench, just loosen up these two hoses. You're really only loosening them, so you can let the air out. Just let all the air flow out of each side. Then remove those hoses the rest of the way. Once you've pulled the hoses free, just push the tab on the harness on the back and disconnect it. Then pull your compressor down. Using a flat blade screwdriver, you want to just split these open and pull that off the hose. Then do the same thing for your other hose.
On the left, is the old air compressor. On the right is the new one from 1AAuto. You can see they're identical. They'll fit exactly the same. Loosen up these hose clamps. Now, reconnect the harness. One of these has a white ring around it. One has a black ring. You want to put the white hose into the one with the white ring, and the black one into the one with the black ring. You force those hoses as far in as you can into the fittings. Then you tighten up the fittings. You want to tighten them up until they give some resistance. It's only supposed to be one or two foot-pounds that you tighten those two. You can see the black one, I force it in as far as I can, and then tighten up the fitting. Repeat the same for the white one, which is the other side. Re-clip the compressor in place. Now just replace those two 13mm bolts and tighten them up. Reconnect those two hoses and the harness, and then re-clip the harness into place.
Replace the fuse, and close up your fuse panel. Very important: lower your vehicle down, but check the air springs. Make sure they don't fold up on one side. Make sure they come down nice and evenly. You don't want them wrinkled or folded on one side of the front or back. You want them even so that when your compressor starts re inflating them, they re-inflate evenly. Then you can start your vehicle up.
We hope this video helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.
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