I posted this on another site a little over a year ago and while I was cleaning up my truck today I noticed how well it is holding up. So, I decided to start a thread over here for those that might be interested.
I am just going to cut and paste a few of my post from that thread...
After reading all the complaints about the GM wheel well liners, I decided to undercoat mine. So I bought some 3M rubberized undercoating and went to town last night. I am very pleased with the outcome.
I had to decide between the 3M and an off brand. I am glad I went with the 3M. I ran out right before I was completely finished and had to get some of the other brand. I sprayed it in 2 spots and said forget that. It does not look anywhere near as good. So there are a couple areas that need touched up, but I am very pleased.
I cleaned the wheel wells really well first and then scuffed them with some Scotch Brite Pads.
Next I taped off the fender lip and covered the wheels.
I am just going to cut and paste a few of my post from that thread...
After reading all the complaints about the GM wheel well liners, I decided to undercoat mine. So I bought some 3M rubberized undercoating and went to town last night. I am very pleased with the outcome.
I had to decide between the 3M and an off brand. I am glad I went with the 3M. I ran out right before I was completely finished and had to get some of the other brand. I sprayed it in 2 spots and said forget that. It does not look anywhere near as good. So there are a couple areas that need touched up, but I am very pleased.
I cleaned the wheel wells really well first and then scuffed them with some Scotch Brite Pads.
Next I taped off the fender lip and covered the wheels.

