I bought it used for $4600 in 2005. The brakes seemed to work and so did the antilock system on snow covered roads. Then it stopped working, and the brake pedal would go way down near the floor. I put new brakes on all 4 wheels, and bled them several times but the brake pedal never would work its way up to normal pedal height when the brakes were applied. replaced calipers and rear wheel cylinders and brake hoses. same problem. A mechanic told me that the Antilock unit had failed and the only way to fix it was to remove it and connect the brake lines directly to the master cylinder.

The problem would be that the car computer would turn on the Service engine soon light and set a code for antilock failure.. In my state the yearly inspection would fail because of that, and I couldn't drive the truck. So I bled the brakes again and again, kept tightening the brake adjusters kind of tight and the brakes would work sort of good enough to stop most of the time. I had to learn to use the emergency brake along with the service brake pedal at the same time to make the brakes function better.

I am at my wits end on what to do to fix it. The last inspection failed because of the brakes. Now I can't drive it anymore. GM brakes are known for being the worst in the industry, due to under size brakes and poor power assist. My sister had a full size Jimmy that had the same problem, but she took it to a dealer and they couldn't fix it, even though they replaced the master cylinder and vacuum booster unit. She traded in the truck for a new one. I should have too.

I don't buy GM anymore. I think lots of other people thought the same way because GM almost went bankrupt a few years back, and I wish they would have. They put on a 100,000 mile guarantee on their stuff for a couple years but then did away with it. Then they started to build trash again. STAY AWAY FROM GM! THEY BUILD BAD DANGEROUS VEHICLES! The doors fall off some of their trucks due to poorly designed hinge pins, and they make bad brakes, the transmissions fail at an alarming rate, the timing chains on the newer cars start to fail at 50K miles and it destroys the engines in the process. This company needs to be put out of business! The bad part is the other car companies aren't much better. It's time the Government steps in and creates a bureau of standards for automobiles and trucks that actually protects the consumer instead of taking bribes and sitting on their butts all day. That goes for all things automotive, including tires as well!

My truck will have been in the dealer a week on Saturday, and still not fixed after replacing calipers, brake pads, disc, hoses, master cylinder, and booster. I suspect the clearance between the booster push rod and master cylinder piston is too great, but they don't listen to me.

I am a retired master Tech and have worked for The Factory in various positions in parts and service. I went out and fixed cars no one else could. However now I am 78 years old and not able to do the work myself. It is extremely frustrating knowing what I do and did and what the shops and Dealers do to you today. It's all a big rip off. They don't frigging know what they are doing no. one, and no. 2 they don't care. I have most likely rebuilt more brakes than anyone at the dealer.

Another major problem is the paint clear coat is peeling off. The Factory should be made to correct these defects with no questions asked. I refuse to drive a vehicle that does not have proper brakes.