Typically rotors come from the factory covered with a waxy material to prevent rust. Yes, it's a good idea to remove that material before using the brakes.
No, unless they are rusted.
There was a lot of squeaking while braking when my car needed new rotors.
If the rotors are in good condition, not warped, not scratched, then you can replace the pads without turning the rotors. Inspect the rotors carefully.
You probably need new rotors
remove tire calipers brake assembly then pull your rotors off i would recomend putting new brake pads if your putting new rotors you will need a special puller for the rotors cause they are pressed on
I just replaced mine, rotors had rusted away. Remove caliber, mine were rusted to the wheel hub, had to pry off. cleaned old rust off with steel wool, new rotors slid on with no problem
you may need to check your vents and see if they need cleaned or... you may need a new filter. you may need to check your vents and see if they need cleaned or... you may need a new filter. you may need to check your vents and see if they need cleaned or... you may need a new filter. COZ IT MIGHT BE AN AIR-CON!
When changing the brakes and rotors on a 2007 Tahoe, you typically do not need to rotate the rotors if you are replacing them. Rotating rotors generally refers to moving them to a different position on the vehicle, which is unnecessary when installing new rotors. However, if you're resurfacing existing rotors instead of replacing them, they may need to be rotated based on wear patterns. Always ensure to follow the manufacturer's recommendations for best practices.
The majority of the stopping power is performed by the front rotors. I would start by replacing them.
the only other parts you might check when you have it pulled apart,are the wheel bearings.the bearings etc are in the rotors but do not come with them when you buy rotors.if you are not careful you will trach the bearing races and seal on the back side of rotors when trying to remove them to install in new rotors
One effective way to clean new rotors without using brake cleaner is to use a mixture of warm water and mild dish soap. Gently scrub the rotors with a soft brush or cloth to remove any dirt or residue. Rinse thoroughly with clean water and dry completely before installing.
I don't know if you are saying you have the new hubs and rotors and still have pulsation, or if you are asking what causes pulsation. If you have pulsation on slowing this is due to warped rotors, and you need to change the rotors and the brake pads, not the hubs. Not too expensive: 2 rotors and brake pads for my Pontiac is about 55 bucks. DIY of course.