I have owned the sub for about 5 years now. First off I really enjoy driving it. I need to say my vehicle is modified and not stock. 9 inch lift 38in super swampers, and a couple of engine upgrades. I can verify however even before I installed the lift and tires I had a couple of problems. #1 always had uneven wear in the front brakes, 1 caliper (front) would always burn up the brakes faster. I made sure I used GM pads from the dealer. I also made sure the calipers were moving freely and guide bolts lubed with GM supplied grease. #2 poor braking performance even with vehicle unloaded, I guess I figured this one out by myself. Not to be rude but why would GM equip a vehicle with a automatic transmission that is rated at approx 7,300lbs with a tiny braking system. In my opinion small pads+small rotors=long stopping distance. #3 detonation, going up small inclines 1/4-1/2 engine throttle. This has always happened. Even though this may not be GM's problem I just wanted to get my 2 cents in. I understand all gasoline is not created equal, I have to use 92-93 octane with a fuel additive to get rid of the noise. Is this not a fuction of the knock sensor? I maybe wrong but shouldn't the knock sensor back off igntion timing via the ECU when detonation is present. #4 door hinges loud/noisy breaking.

- Bellingham , WA, USA

Vehicle will intermittently pull to the right and also at intervals to the left, cause unknown. Dealer is in the process of replacing the brake calipers, but found no remedy for the problem.

- Pompano Beach, FL, USA

While driving applied ABS brakes, started pulling right when heated; pulls left when cold; passenger's side brakes wearing faster than driver's:took to dealer; cannot find problem; did change pads/calipers & had passenger wheels rotated.

- Victorville, CA, USA