Is there a way to improve lumbar support in the Impala seats?
You can buy an inflatable bladders, complete with inflator bulb and bleed-off valve, from upholstery supply houses, JC Whitney, or many other sources, and for around $10. When you get ready to install, run the driver’s seat all the way forward, then lean the seatback all the way back. You’ll then see two plastic edge moldings that hold the front and rear seatback leather together, and they simply unsnap when you run a tool (such as a screwdriver) between them. Once that’s done, run a hand up between the leather seat upholstery and the foam padding behind it. You’ll encounter a little resistance, because the two are Velcroed together. Simply undo the Velcro with your hand, and you’ll be able to insert the lumbar bladder into the space. Don’t close up the seat upholstery yet: instead, return the seat to its original position, and check, by sitting down, the position of the bladder. It should, when pumped up, press into the center of the small of your back. Adjust for fit, and then close
