2002 Denali XL squeaking rear left wheel
saltfever1
Member Posts: 3
My denali has just had the emergency brake pads and actuators replaced now when turning left the left rear wheel squeaks. The rotor is rubbing on the backing plate. Could the backing plate be offcenter? The mechanic says it is something with my rear differential. Any suggestions?
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Could the squeaks be coming from the new pads from being adjusted a bit too tightly, so the parking brake cable stretches during cornering and causes the pads to touch the rotor and created the squeaks?
The rotor should be tightly sandwiched in place by the rim/lug nuts, there should be almost no flex during a turn enough to allow the rotor to rub against the backing plate (by the way, this is the original rotor, right?); I would double check to make sure that the wheel is mounted correctly with lug nuts torqued to spec (if you have not done so already). Assuming the mechanic did the brake job correctly et al (and did not bend the backing plate accidentally while removing/mounting the wheel), can you get your hand on the plate from under the car to pull it (the area that was rubbing) away from the rotor just a bit to keep them from touching, or otherwise, try that with the wheel off... Good Luck!
Right after a rear brake service, there was a squeak when going around a corner.
The GM dealer who serviced it said that I needed new rotors (approx. $600), so I did the following myself: I removed the rear rotors and turned them to remove the ridge on the inside part where the parking brake shoes work. This took care of the squeak. The new rotors would have fixed the problem too, as new rotors do not have a ridge.
If you do the work yourself, removing the rear rotors is a pain in the butt, but quite easy. If the main braking surface on the rotor is not worn, I see no point in spending big bucks for new rotors just because there is a ridge on the braking surface where the parking brake works. By the way, if you must buy new rotors, you can get them for about half GM's price from third parties like NAPA, Advance, etc.