The 18mm wrench to remove the upper brake caliper guide pin bolt is one of the odd size tools that you will need. Its not included with most metric wrench sets. You also will need a 21 mm socket or wrench for the bracket bolts.
I would also suggest flushing the brake system. If you order some speedbleeders from
www.speedbleeder.com you can do the bleed/flush yourself. I would remove all the fluid you can out of the brake reservoir with a turkey baster then add the new fluid and do the bleed/flush. Not the procudure is different for 01 vettes and up. the order is RR, LF, LR and RF
Here is the prodedure for the brake bleed:
Steps 1-3 are for bleeding the master cylinder.
4. Fill the brake master cylinder reservoir with Delco Supreme 11® (GM P/N 12377967) or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container. Ensure that the brake master cylinder reservoir remains at least half-full during this bleeding procedure. Add fluid as needed to maintain the proper level. Clean the outside of the reservoir on and around the reservoir cap prior to removing the cap and diaphragm, when cap removal is necessary.
5. Install a proper box-end wrench onto the RIGHT REAR wheel hydraulic circuit bleeder valve, then install a transparent hose over the end of the bleeder valve.
6. Submerge the open end of the transparent hose into a transparent container partially filled with Delco Supreme 11® (GM P/N 12377967) or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container.
7. Have an assistant slowly depress the brake pedal fully and maintain pedal position.
8. Loosen the bleeder valve to purge air from the wheel hydraulic circuit.
9. Tighten the bleeder valve, then have the assistant slowly release the brake pedal.
10. Wait 15 seconds, then repeat steps 7-9 until all air is purged from the same wheel hydraulic circuit.
11. With the right rear wheel hydraulic circuit bleeder valve tightened securely, (after all air has been purged from the right rear hydraulic circuit), install a proper box-end wrench onto the LEFT FRONT wheel hydraulic circuit bleeder valve, install a transparent hose over the end of the bleeder valve, then repeat steps 6-10.
12. With the left front wheel hydraulic circuit bleeder valve tightened securely, (after all air has been purged from the left front hydraulic circuit), install a proper box-end wrench onto the LEFT REAR wheel hydraulic circuit bleeder valve, install a transparent hose over the end of the bleeder valve, then repeat steps 6-10.
13. With the left rear wheel hydraulic circuit bleeder valve tightened securely, (after all air has been purged from the left rear hydraulic circuit), install a proper box-end wrench onto the RIGHT FRONT wheel hydraulic circuit bleeder valve, install a transparent hose over the end of the bleeder valve, then repeat steps 6-10.
14. After completing the final wheel hydraulic circuit bleeding procedure, ensure that each of the 4 wheel hydraulic circuit bleeder valves are properly tightened.
15. Fill the brake master cylinder reservoir to the maximum-fill level with Delco Supreme 11® (GM P/N 12377967) or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container.
16. Slowly depress and release the brake pedal. Observe the feel of the brake pedal.
17. If the brake pedal feels spongy, repeat the bleeding procedure again. If the brake pedal still feels spongy after repeating the bleeding procedure, perform the following steps:
Inspect the brake system for external leaks. Refer to Brake System External Leak Inspection .
Pressure bleed the hydraulic brake system in order to purge any air that may still be trapped in the system.
18. Turn the ignition key ON, with the engine OFF. Check to see if the brake system warning lamp remains illuminated.
19. If the brake system warning lamp remains illuminated, DO NOT allow the vehicle to be driven until it is diagnosed and repaired.
