Is it necessary to replace Brake caliper while replacing rotors and brake pads?

The query asked for Toyota Sienna.

Basically its not necessary to replace brake caliper,while replacing brake rotors and brake pads.But many car drivers/owners do it.
If the caliper pistons push in smoothly with a c-clamp and the boots are not torn I would not worry about replacing the calipers. There were not known to freeze up. I would definitely flush the fluid with new brake fluid. There was a TSB on the rear brake drums for noise and shudder. If you are experiencing noise or shudder in the rear brakes it would be a good idea to update them. The shoes usually will go 150000 miles.

This details will help.

Thanks.

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