- May 14, 2011
- 2,219
- 5,371
The c4 light motors would ran on after they closed. The fix, in my case was to replace the Delrin bushings. Parts $5, time 4 hours. Been good since, but I'm waiting for the plastic gears to fail.Our 97 Firebird had the air brakes. The plastic gears would fail all the time leaving them either up or down 100% of the time. The fix was brass gears sold by the aftermarket.