What its easy you can do this. Follow the steps

 

what size(length) breaker bar did you use?

 

Jeez, I don't know.... 16"?

 

Do you think using a 25in would be ok, or is that too long?

 

Turning the wheel so the bar points out from the car, I don't see that being an issue. It's not always needed either. It's mostly just handy to be able to save the energy for other things.

 

some of these posts are needing up dating as far pictures go. Herman

 

If you use tread locker you wont be getting those bolts out without heat ,you may have to replace those rotors again some day.

 

I have used just 1-2 drops of LocTite's Red thread loc, even though it states you require heat to remove, that is not 100% true. I believe you may need heat if you drench the the threads. Using 1-2 drops, I've gotten the bolts free by hand (usually with an extension on the handle of my ratchet).

Also, GM uses a dry red thread lock compound on the bolts where they are new (I know this as I had to get a replacement bolt once from the dealer). It's not much, just a little of the dry compound, but it works.

Unfortunately, I have had 3 different cars that use the caliper and caliper bracket have a bolt that holds the bracket to to the knuckle go MIA and cause problems. I did some research and found many others with cars using this design from all manufactures with this issue and common suggestion to use thread lock.

For those who never had that problem, it's possible my issue was brought on by cleaning all the crud from the bolts before re-installing. The issue that could create is removing whatever was left of the original dry thread lock.

Attached is a screenshot from the actual GM shop book on re-installing those bolts. GM is telling you to use thread lock. After those three issues without thread lock, I am now using it on those bolts every time.

 

As the procedure clearly states in step #3 tighten bolt to 180N-M or 133 lb ft of torque. These bolts are tighter than the wheels on your car you wont be breaking them loose with a hand ratchet. I have never used heat ,I either use a breaker bar or a impact

 

Looks like I ruffled some feathers LOL When I changed my rotors just recently those bolts were almost to the point of non loosening , I cant really see them needing loc tight ,but for sure do what the book says. They just might need it with 200 ft pounds of torque on them (I didn't think so ) Infact I put never seize on them. Dont throw a nut guys it was just my observation . Herman