2009 gmc acadia replace rear brakes

remove wheel --remove brake caliper -remove caliper bracket - remove rotor Rear Wheel Bearing on 2012 GMC Acadia i know its a different year same removal

bounces or wiggles ?? as if it wiggles then you've missed a warped rotor by not changing em ,(there can be more wrong with rotors than just physical wear ) this will make your front wheel bearings go bad early if you allow them to wiggle this way BTW if you change rotors its a good idea to at least regrease bearings if not replace em , and allways get new grease seals don't try to reuse em

very likely an indication that your brake pads are completely worn out and you are damaging your brake rotor with every pedal push. Get to a brake mechanic immediately.

I guess you never work on any vehicles,
or use the internet parts sites at all

The front & rear rotor size,calipers size,pad size,etc
is never the same on any vehicle

Disc brakes in the front and drum brakes in the rear. Make sure that you repack the front bearing's with wheel grease before finishing the job.If the front rotors and or the rear drums have a rough brake pad surface,get them resurfaced before installing new brake pads or brake shoes in the rear. you can go online or your public library for complete instructions on how to replace the brakes on that vehicle.

Yes, it has rear Disc Brakes, I would suggest to change the rear pads since they have to remove the rear Brake Calipers to remove the rotors and it wouldn't take much more time or labor to replace the pads at that point. That way when your rear rotors are re-installed and your new brake pads are installed your rear brakes should give you longer service life and better stopping power.

That's to be expected and is completely normal.

Rear brake shoes as fitted to drum brakes can typically last up to 60k miles with periodic adjustments, but you have rear disc brakes and the shoes will typically last half of that.

Also, modern brake pads no longer contain asbestos and are now made using harder metallic compounds; the direct result is that brake discs (US=rotors) are also considered to be consumable items as they are worn down by the harder pads. It's not unusual to have to replace front discs every other pad change and rear ones with every pad change; in both cases the mileage will typically be around 30k miles on most models.

there is many kind of brake system of ur truck here i will send u everything about the brake and i hope its help

Rear Brakes JC3

Rotor Discard Thickness* 18.50 mm/0.728 in Rotor Minimum Allowable Thickness After Refinish 19.0 mm/0.748 in Rotor Thickness (new) 20.0 mm/0.787 in Rotor Maximum Allowable Lateral Runout 0.05 mm/0.002 in Rotor Maximum Allowable Scoring 1.50 mm/0.059 in Rotor Maximum Allowable Thickness Variation 0.025 mm/0.001 in
Rear Brakes JC4

Rotor Discard Thickness* 28.50 mm/1.122 in Rotor Minimum Allowable Thickness After Refinish 29.0 mm/1.142 in Rotor Thickness (new) 30.0 mm/1.181 in Rotor Maximum Allowable Lateral Runout 0.05 mm/0.002 in Rotor Maximum Allowable Scoring1 .50 mm/0.059 in Rotor Maximum Allowable Thickness Variation 0.025 mm/0.001 in
Rear Brakes JH2

Rotor Discard Thickness* 28.50 mm/1.122 in Rotor Minimum Allowable Thickness After Refinish 29.0 mm/1.142 in Rotor Thickness (new) 30.0 mm/1.181 in Rotor Maximum Allowable Lateral Runout 0.05 mm/0.002 in Rotor Maximum Allowable Scoring 1.50 mm/0.059 in Rotor Maximum Allowable Thickness Variation 0.025 mm/0.001 in
Rear Brakes JH6

Rotor Discard Thickness* 27.50 mm/1.082 in Rotor Minimum Allowable Thickness After Refinish 28.0 mm/1.102 in Rotor Thickness (new) 29.0 mm/1.141 in Rotor Maximum Allowable Lateral Runout 0.05 mm/0.002 in Rotor Maximum Allowable Scoring 1.50 mm/0.059 in Rotor Maximum Allowable Thickness Variation 0.025 mm/0.001 in
Rear Brakes JH7

Rotor Discard Thickness* 28.5 mm/1.122 in Rotor Minimum Allowable Thickness After Refinish 29.0 mm/1.142 in Rotor Thickness (new) 30.0 mm/1.181 in Rotor Maximum Allowable Lateral Runout 0.05 mm/0.002 in Rotor Maximum Allowable Scoring 1.50 mm/0.059 in Rotor Maximum Allowable Thickness Variation 0.025 mm/0.001 in
* All brake rotors have a discard dimension cast into them. Replace any rotor that does not meet this Specification. After refinishing the rotor, replace any rotor that does not meet the minimum or discard thickness specifications.

your inside pad wore out first do to a bad caliper or frozen slide or brake hose.remove brake hose off the caliper and see if you can turn the wheel.if you can replace hose and bleed caliper.if wheel still doesn't move buy a loaded caliper,this will come also with new slides!and then bleed