Question about 2002 Pontiac Sunfire

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Brake caliper I was driving and i noticed a rattling in my driver's front tire take it off and notice my caliper was shaking. it moves back and forth about 3/4 in. is it as easy as tightening a bolt? it does not specify anything in the haynes general manual i have.

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It could be as easy as that. Definitely check your mounting bolts. Check to see if your caliper is collapsing back rather than staying close to the rotor as well.

Posted on Jul 04, 2008

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How can I change the rotors and brakes on a 2006 Cadillac?


Front brake
Step 1: Identify Front Disc Brake Components
brake_pads_rotor.jpg
Front Wheel Drive Brake Assembly
Most front disc brake components include: brake rotor, brake pads, brake caliper, caliper mount and brake flex hose. Brake service usual occurs between 20,000 and 40,000 miles depending on driver habits, road conditions and brake pad/ rotor materials used.
Step 2: Remove Brake Caliper to Replace Pads
brake_pad_set.jpg
Removing Brake Caliper Mounting Bolts
Locate primary caliper mounting bolts; apply wrench pressure counter-clockwise (When looking at the head of the bolt) to remove the bolts, upper and lower. Make sure the bolt threads are in good shape and replace if necessary.
Step 3: Remove Front Brake Caliper
remove_brake_caliper.jpg
Remove Front Brake Caliper
After removing the primary caliper mounting bolts lift the brake caliper off of the rotor and then tie or secure to the side, being careful not to bend or kink the brake caliper flex hose. Thoroughly inspect brake caliper and brake hoses for leakage, cracks or chaffing and replace as needed. Next remove the brake pads (If not mounted in the caliper) and secondary caliper mounting bolts. Notice how great protective gloves work, most technicians use them on the job today.
Step 4: Remove Brake Pads
remove_brake_pads.jpg
Remove Front Brake Pads
Once the brake pads have been removed, make sure if there is anti rattle hardware to transfer to the new brake pads. Some brake pad manufacturers will include the proper lube (Caliper slides) and anti-rattle hardware to ensure proper performance of their product.
Step 5: Remove Caliper Mount
remove_brake_pads_holder.jpg
Remove Caliper Mount Bracket
Finish removing secondary caliper mount bolts and remove caliper mount. Note: clean and lube caliper slides and pad friction surfaces of all foreign material or build-up.
Step 6: Remove Brake Rotor
brake_rotor.jpg
Remove Brake Rotor
With the caliper mount out of the way you can now remove the brake rotor. Sometimes it can get stuck so you may need to tap it with a hammer or use penetrating oil to free it up. Some manufacturers use small screws to hold the rotor on as well. Clean and inspect wheel studs, replace if any are damaged. Also clean bearing hub rotor mount surface to ensure the proper mounting of the new brake rotor. Inspect the ABS sensor wheel for cracks or damage and replace as needed.
Step 7: Depressing the Brake Caliper
compress_caliper.jpg
Resetting Brake Caliper
To install the new brake pads you must retract the brake caliper piston. Remove the master cylinder lid or open the brake caliper bleeder screw to allow excess brake fluid to be released if necessary. Install C clamp tool and gently tighten clamp until caliper piston is fully depressed. Note: use old brake pad to protect the caliper piston. Close the bleeders once the piston is retracted completely
Step 8: Installing New Brake Rotor
new_brake_rotor.jpg
Install Brake Rotor
Install new brake rotor, the new rotor is manufactured with a protective film over the rotor to keep it from rusting, remove protective film with brake cleaner before installing; also after the brake job is complete you may experience a small amount of smoke from the rotor when first used. This is normal and will go away after the first couple of uses.
Step 9: Installing New Front Brake Pads
new_brake_pads.jpg
Installing New Brake Pads
Reinstall the front brake caliper mount, and then install front brake pads. Make sure the pads are seated properly in the caliper mount; it must be a close fit to work properly..
Step 10: Reinstall Front Brake Caliper
front_brake_rotor_pads.jpg
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Reinstall front brake caliper and reinstall caliper-mounting bolts, recheck all mounts and mounting bolts. Check the caliper slides to be sure there is no bind and that the caliper moves freely back and forth on the caliper slides. Bleed brake system per manufacturer's specifications to relieve any air trapped in the system. Before driving the vehicle, push the brake pedal down and let it up slowly, repeat until normal brake pedal operation resumes, this operation is forcing the brake pads to travel to the brake rotors.

Dec 18, 2010 | 2006 Cadillac STS

1 Answer

I have a noise coming from the left side front wheel are. It is a rattle - took it to a local Toyota dealership who said it was the steering RAC well that was a $1000 mistake because the noise did not...


1) Take car to non dealer shops willing to give FREE opinion

2) Not likely you have a shock in Driver Front wheel, more likely a strut. Not likely strut needs to be replaced, but strut has a STRUT MOUNT (3 bolts of which can be seen when opening your hood) below this it is connected to STRUT BEARING which below it connects to UPPER SEAT OF STRUT or SPRING INSULATOR, that if loose will rattle. Usually, shops will not tighten, because to tighten is same labor as replace the parts. (Since you already dropped $1000 on ToyotaDealer, ask them to tighten FOR FREE since rattle is still there.)

3) There is a part called a "link," connects strut to stablizer bar, that if bushings are bad will rattle.
4) If stabilizer bar bushing(s) bad, will rattle early on but eventually clunking
5) Bad ball joint or tie rod can rattle as well

Never permit any shop to do expensive work on your car w/o first getting a second opinion somewhere else first. Do not tell second shop that you are there for a second opinion.

Shaking steering wheel at highway speed, no braking
1) Bad tire in front, bad tires in front, verify inflation of tires
2) Wheel alignment may be out
3) Front suspension parts (mentioned several above)

Highway speed to suddenly braking shakes steering wheel
1) Front brake rotors need to be inspected for warping
2) Test calipers on empty road at 40 mph, going straight on very LEVEL ROAD, hit brake pedal SOMEWHAT hard while barely touching steering wheel. If car jerks to one side, instead of braking straight on, you may have a caliper, ABS, or brake fluid pressure regulator off.
3) If brake rotors are warped, may as well replace front brake pads at same moment. Use ceramic.
4) When you drive on VERY LEVEL road on highway, steering wheel must be centered, let go lightly of steering wheel. Did car stay in middle of lane? No? Get a 4-wheel alignment.

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2 Answers

Driving 50 plus MPH, why does the front end start to shake


Hi, jack up the car and hold the front wheel. Shake back and forth, and side to side. Movement sideways indicates ball joint wear, easy replacement.

Movement back and forth = wheel bearings gone.

Check the condition of the CV boot rubbers. If split, you will need new ones and to swap the CV joint.

Check the power steering fluid, if it is low then the pump might have a leak and casue the shaking from inadequate fluid supply.

Hope this helps.

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2 Answers

Audi shakes on highway at 45mph and then stop after 10 min.


I would suspect several things

First have the tires spin balanced - my guess is you have a seperated tire
You could have a brake hanging up on that wheel
Or not making proper contact - thus causing the rust or more correctly not removing the rust
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1 Answer

I've checked the 2 solutions that I received and found that the area in the center of the rotor, where the little pin is, allows the rotor to move in and out. When the tire is on, I can push it and pull is...


sounds like the upper or lower ball joint on the steering knuckle or possibly the wheel bearing -- jack the suspension up on that side -- place the jack under the control arm so you load the suspension .. have someone move the wheel in and out and up and down -- if there is play in the in the ball joints it will be noticable. If the ball joints are not moving then most likely is your wheel bearings -- (hint brake fade on first application indicates wheel bearings).. when driving with loose wheel bearings the brake rotor will walk back and forth moving the pads further and further away from the rotor, which in turn will cause the brake pedal to go almost to the floor on first application. If the brake pump up when you are stationary and hold good -- wheel bearing will be the problem..

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See if you can bounce car and replicate the noise. If you can, you should be able to find it, and put your hand on it. Stabilizer bushing are a place to look, both at the lower a arm and on the frame. If you narrow it down to the strut, it will need to be replaced. The front trans mount also goes bad, try putting it in drive with your foot on the brake and give it some gas and see if the engine moves an excessive amount.

Nov 23, 2009 | 1992 Buick Regal

1 Answer

Left front wheel wobbles when braking


have you checked the wheel bearings? with that wheel raised up off the ground with a jack and on a jack stand, place your hands at the sides of the tire and give it a shake, do the same with your hands at like the 3 o clock and 10 o clock position as to not get your hand hurt if something moves loose, and shake there to, if you feel any play it could be a tie rod, or control arm, spin the tire and listen for any noise, if you hear any you more then likely have a bad bearing....

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