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Hey Guys, I didn't do a full write up, but wanted to compile all the links I used in one place to maybe help others. My driver side seat heater went out last year or so, and my bottom foam was absolutely shot. Even had a lean toward the door, wife and I both noticed it causing us pain on the way to Florida, so I finally stopped putting it off. Decided if I was going to do the seat heater, I was going to do the TSBs on the under side as well as the foam itself. I went back and forth on doing the OEM foam, but finally settled on attempting to upgrade it. Went with The Seat Shop option on Amazon. Very quality piece, fit like OEM, has the same connections for the tubes on the leather cover and the velcro on the bottom side leather attaches to in 2 spots. The stiffness is noticeable feeling them side by side. I feel this one will hold up better, but time will tell. Ill circle back in a year or so and report back. Parts: The Seat Shop Durofoam I bought, part number may vary slightly check for your application. Heated vs Cooled etc. https://www.amazon.com/gp/product/B078NG3V47/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 I bought my seat heater from the local dealer. After looking around and adding shipping the difference was negligible. I ended up with part number GM 23168136. Yours may vary depending on year, model, heated, cooled, etc. TSB parts ACDelco 10-4057 Synthetic Multi-Purpose Glycol Lubricant GM 13594989 Shim Clip GM 13405675 RETAINER-F/SEAT CUSH LATL ADJR Process: Links I used to aid in tear down and replacement below. I dont think any of these were perfect vids/write ups, but if you watch/read them all there is some great info in each. Troubleshooting the heater before you go down this road. https://youtu.be/6hDrsJakOTY Steps to remove seat and replace heater. Good tips in the text below video I agreed with as well. https://youtu.be/Xgkvn2qYSM8 Decent video showing some more context on the side seat trim. Adds some steps on the manual tilt handle as well if you have that. https://youtu.be/oDvmyX9ZlP8 Another video on removing both front seats. https://www.youtube.com/watch?v=v0u-pYdIZsg The text walk through here is fantastic, pretty step for step. Pictures were a little lacking, but combo it with the above videos and you will be well armed for this. Credit to user here: Jullian is not my name. https://www.gm-trucks.com/forums/topic/209411-how-to-replace-heated-seat-element-pads/ Walk through of the TSB for the seat movement fix, I dont know that I had much issue here but for a few dollars I did it while it was out. Cant hurt. Some good cut aways and pictures to help you in general as well. Part numbers and at the bottom of this link. https://gm.oemdtc.com/600/pi1376-front-seat-lateral-movement-andor-click-type-noise-while-driving-2015-cadillac-chevrolet-gmc PDF version: https://static.oemdtc.com/TSB/SB-10072596-0335.pdf Thanks, Josh