This is my first post to this forum and I am hoping that someone can point me in the right direction. To start with I have 2000 4WD GMC 1500 and I am pulling a 30' x 8.5' v-nose trailer with 3500 ...
I also remember a buddy that had an Avalanche that had poor brakes. The best he got out of it was when he had the brakes bled with the GM Tech2 scan tool. Have you opened or had air in the system? Often times the air couldn't be bled without the scan tool.