what have you gotten done on your blazer today?
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As the title says, I replaced the 21 year old OEM air shocks in my 2000 GMC Jimmy Diamond Edition with the Automatic Leveling System. The main difference between the OEM and Monroe Air shocks were the air fittings. The Monroe shocks uses a threaded compression air fitting where the OEM fitting was a tapered push on fitting. I was able to remove the push on fitting from the airline ends and utilize the Monroe fittings to connect the factory air lines to the shocks. What i did not realize was the OEM compressor was running but not delivering any air to the shocks. I traced the problem to no air being delivered from the pump. The compressor itself is inside a cavity of the right rear quarter panel. At this point I took the car to the local dealer to confirm that the compressor is faulty or a loose air connection at the compressor. The diagnosis was that the compressor was faulty and is obsolete from GM. I was able to locate a new OEM compressor on Ebay and will have the compressor by Friday. I was able to pressurize the air shocks by connecting the Monroe manual inflator valve to the OEM tee fitting. Charged the shocks to 90 PSI and pressure held steady. I also sprayed all the pressurized air fittings with soapy water to check for air leaks; and did not find any. I should have it all back to factory operating condition by the end of the week. Update: New compressor is installed and is working perfectly. I took the old compressor and bench tested it and it was not putting out any air. I took the head off of the compressor and the crank cover. The piston was loose as a goose in the cylinder bore. At this point I gave up the idea that I could repair the compressor and have a spare. It is now in the trash. Hopefully the new compressor will last another 20 years.
Last edited by mr.vls; 03-05-2021 at 06:21 PM.
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It's your ride, though, so take my opinion for what it's worth.