Lumbar pump repair

[Z FOR 2]

I have not been on the forum very long, and seldom have anything to add, but, this forum helped me tremendously today.

My lumbar pump in each seat did not work. The pumps would not even run. I checked the repair manual, and after doing all of the tests to be sure my switches were working and I had power going to the pumps, all the repair manual suggested I do is to replace each pump.

I inquired at my local Chevy dealer and found that the Jasco lumbar pump is no longer available. (I did not ask if a repair kit was available, though I don't know if Chevrolet ever sold a repair kit for this pump). I also inquired at a vintage car parts house and others on the internet, but found that no one I checked with had the pump in stock.

I did a search on this forum and found that the pumps could be repaired by cutting new diaphrams from a vinyl shop glove. The post even had pictures and a description of how to remove and repair the pumps.

I thought it would be worth a try, so this afternoon I took the pumps apart. Sure enough, what I found was exactly what was described in the post. The diaphrams in each pump had crumbled and were in pieces. As the diaphram was broken, the pump could no longer turn. I cut new pieces from the shop glove, replaced the diaphram and put the pumps back in the seats. Each lumbar pump now works like new.

Thanks for the help.