What ever you do make sure the bolts are the right ones. I got some from the HELP display at O'Reilly that were the wrong length. The knurled section went too far into the hole and cracked the block where the starter bolts on. It was the end of a good '99 Yukon for me. I went back to check the application and see if someone could have put them in the wrong package. Every package there was the same.