Dorman 949-099 Suspension Air Compressor Compatible with Select Cadillac / Chevrolet / GMC Models (OE FIX)

Installed on my Escalade 4 years ago. Still going strong. It’s nice and quiet. No complaints whatsoever.

Just purchased for my 2013 Tahoe 4-4-22. Original one was really noisy and didn't seem to work well. Thought this was a decent priced alternative and I'm glad I chose this. First off, it took me longer to figure out how to get my spare tire down than installing the compressor. Getting the old one off was easy, just 3 nuts and it comes off. Couple air lines to remove off the shock right there and the hose going up. This one had everything needed and looks to be great quality. No joke about the plug and play, fit perfect and the connector matched up. You do not remove the nuts on the new one, they go in the big holes on the frame and it slides over, then tighten them up. Took me maybe 20 minutes. I started the Tahoe up and got a little scared because I couldn't hear it working. Shut it off and started it and walked back by it this time. Working perfect, just so quiet I couldn't hear it. I just got it installed but unless it stops working, I'm 110% pleased.

Just installed my new Dorman air suspension compressor on my 2005 Chevy Tahoe. I was very pleased to see the service ride control message not display when I started the truck up. I got a little worried after I didn't hear the compressor initially. Normally my old, original compressor with 120k miles, was very audible. I quickly turn my radio off and heard the faint sound of the compressor humming away. I turned the truck off and walked to the back of the truck to check the pressure in the air shock bellow and could definitely feel that it was pressurize, unlike before. So, I jumped back in the truck and started it up again. With my windows rolled down and radio off, I heard the compressor start up and turn off a few seconds later like normal. I'm really impressed with how much more quite the new compressor is. It's a night and day difference from my original unit. If I had to nit pick the replacement unit, I would like to see the wiring harness a little better protected. The main part of the harness, where the wires enter the back of the main plug, had quite a bit of exposed, insulated, wire. I added some of my own abrasion tape since the wiring harness sits right next to the frame when the compressor is mounted. That's really about the only thing that jumped out at me. Everything else was pretty spot on. Installation was super easy. The hardest part, and it's not hard at all, was getting the original remote air inlet filter disconnected from the plastic push pin up near the fuel filler nozzle inlet. Other than that, Make sure you're battery positive terminal is disconnected. Then, start with disconnecting the main wiring harness plug that's on top of the compressor, right against the frame. Then, disconnect the air line by removing the retention clip. Now, just loosen the 2 exposed 13mm bolts closest to the rear body mount and then loosen the 1 13mm bolt located inside the frame about 8-10 inches up from the first 2, you'll need a deep well 13mm socket for this. You don't have to remove the nuts completely. Just loosen up a good amount and then tap the 2 exposed nuts with a hammer to get them to release from the from the frame. Push up on the compressor housing and you'll see how the bolts/nuts are keyed into some slots in the frame. With everything disconnected, you'll be able to lift the compressor up about an inch and pull it away from the frame. Just reverse the steps for the installation of the new unit. I would also suggest you take an air compressor and blow out any debris that might have gotten into the wiring harness plug and maybe add a touch of di-electric grease to the plug to help keep moisture out. This is also a good time to inspect your air shock bellows for cracks or tears along with the air lines. If you're leaking air and causing the compressor to run a lot, you'll be replacing the compressor again sooner than you'd like. As for what cause my specific issue, it was the common C0660 error. Which relates to a malfunction or short circuit of the level control exhaust valve. I did not find any noticeable issues with the wiring on the outside of the exhaust valve. So, i'm guessing the wiring is corroded and/or broken inside the the exhaust valve like a lot of others have experienced. I did do the basic checks of the fuses located on the side of the dash and under the hood. I also tested the ALC relay located near the bottom of under hood fuse box where one of the main wiring harnesses enters the fuse box. All of that checked out good. I also jumped power across the ALC harness plug, 30 to 87, and was able to manually power on the compressor. After doing these basic checks, i knew it was time to get a professional OBD-II scan tool involved to see what the real issue was. Best of luck to any of you who are experiencing issues with your Autoride Suspensions. Take your time and diagnose as much as you can before you start replacing parts. If you're not experienced with or have access to a professional grade OBD-II scan tool, find a recommended mechanic and let them pull the codes and check all the data from the sensors. Even if you have to pay for an hours labor, it's worth it to not just throw money at a potentially easy fix.

Exactly like the OEM model. It is working great.

Just installed it on my 2006 Escalade ESV. I was replacing the original OEM one that was leaking out air when the truck was turned off. Would be nice if it came with some instructions, so that's why I only gave it 4 stars. Needs a 13MM socket for the bolts. Also, FYI the two exterior hang bolts will cinch down to the frame as you tighten them. It is truly plug and play, and works good so far! Hardest part was getting the old plastic air intake piece off the gasoline hose, as it was connected by a plastic barbed one-way fastener. Once I got that off, it literally took me less than 30 mins to install. No warning lights on the DIC. Hoping to get another 9 years out of this Dorman, as I got from the factory one. I also had previously replaced the rear shocks with the Arnott/Bilstein AS-2700 ones, so no more leaks for awhile!

An excellent replacement for GM vehicles with air suspension systems that require a reliable air supply, with advanced thermal protection, which prevent it from continuously pumping air into a leaky air suspension, that can potentially cause the compressor to burn out from excessive heat, it would be wise to make sure your air shocks does not have a leak before doing this replacement. This compressor does an impressive job of keeping air pressure at optimal levels, which is crucial for maintaining the performance and comfort of your vehicle’s suspension system, compared to OEM compressors, the Dorman 949-099 offers a more cost-effective solution without sacrificing quality or performance, making it an ideal choice for DIYers. It has been running reliably for my air suspensions for over 2 years, it is super quiet, highly reliable and an affordable option for anyone needing a replacement, definitely worth considering.

WORK AND IN GOOD CONDITION

This product is a direct replacement for my 2010 Escalade. Super easy to install - just make sure you do not remove the nuts on the mounting bolts all the way when removing the old one or installing the new one. Lots of YouTube videos on this. Product worked right away with the new OEM air shocks I installed. Product quality is better than OEM since this new 099 product has a thermal switch that shuts itself off if it gets too hot, like if it is trying to hard to pump a worn and leaky shock. To be on the safe side, make sure that you jack up the rear of the vehicle with a floor jack, mounting it under the differential, to relieve pressure on the shocks when first filling them up. I never see anyone doing this on youtube videos, but it is cheap insurance to prevent undue wear on the shocks and compressor at first start up. Anyway, a great product. Dorman customer service was excellent.

high quality replacement for expensive GM part. Fit perfect and came with wiring adaptor too.

Good product. Fit the suburban no problem. Fairly easy to install