19 mm front 14 rears and 45 for hex key
.The 2000 Chevrolet Monte Carlo brake caliper bolt size is 9/16. The brake caliper bolt can be purchased at most auto-parts stores
The size is probably an half inch bolt to 3/4 bolt.
Take the caliper to a machine shop and have the broken bolt removed or just replace the caliper. If you do not understand the bolt sizing, you are not equipped to retap the caliper.
A 3/8" Allen wrench will remove that bolt on the front caliper.
18mm
size of bolt on break calliber on Chevy trailblazer
15 mm is the size,for caliper bolts caliper bracket bolt is t60(it is star shaped)
The Rear Caliper Bottom Bolt head size is 12 mm. The Top bolt is enclosed only making it a slide bolt therefore you cant and really have no need to remove it. So the only bolt you should remove is the bottom 12mm head bolt. Then there will be a 14mm bolt that will hold the Emergency Brake Cable Bracket to the Caliper. Loosen this bolt and remove the Emergency Brake Cable Bracket from the Caliper. Then pry the bottom of the caliper up off the disc. This will allow you to swing the caliper up then push the caliper back to slide the caliper off the enclosed bolt slide at the top of the caliper. This will allow access to the inside and outside pads to remove them and allow you to press and rotate the Piston (Push and Twist-in Pistons) back into the Caliper with the right Brake Caliper Compression tool. The rear two Caliper Bracket bolt head sizes are 18mm. You must remove the Caliper bracket in order to remove the rear brake disc. The Front Brake Caliper Bolt is a 3/8" Allen head bolt. There will be two bolts holding the front calipers to the Spindle. The Front calipers are standard push-in Pistons.
m8-1.0x 20mm I just replaced mine, it was the top bolt
3/8"
The size is 9mm hex. It needs to be long enough to reach the recessed caliper bolt.
not sure of actual size,but it is a metric size so ordinary wrenches will not fit