Brakes pulsated: Dealer turned rotors @15,200 mi.(no charge) the vehicle is 9 months old and I've had the rotors turned. The pulsation returned 12,000 miles later, (now 8 months since rotors were machined.) along with "traction control" warning lite, "anti lock breaks" lite and "service soon" lite. Dealer's written comment: "cause:.. shorted." Dealer replaced "E2320 bearing and hub assmbly, front wheel- replacement right. No charge." "front rotors out of round-work declined." Work on the rotors was declined because the dealer and General Motors will not waranty the rotors. The assistant service mgr said, "rotors get hot, sometimes they warp when driven through puddles." On a GM recorded line a customer relations agent said that it is not uncommon for rotors to be turned every 15000 miles. If that were the case, I'll need new rotors when my break pads finally need replacing. The dealer never claimed that my driving is at fault. He never indicated excessive wear on the break pads. My contention is GM installed inferior rotors on this vehicle, or perhaps calipers are sticking which may create enough heat to warp the rotors and cause the sensor failures I mentioned earlier.

- North Haven, CT, USA

When appyling brakes they are noisy due to warped rear rotors which had to be grounded or quickly fixed.

- Plymouth, NH, USA