Is it hard to chang the alternator in a 2002 Yukon Denali?

Answer 1

It is not hard if you have some idea what you are doing. The two biggest mistakes are forgetting to disconnect the battery and overtightening the bolts going into aluminum mounts. Make sure you disconnect the battery before you do anything else and when tightening the bolts you need to get them tight but be carefull not to strip the mount holes when you do it. P.S. To loosen the drive belt you need to find the tensioner pulley, locate the square hole and use your socket wrench head to force it over center to give you some slack in the belt. It takes a little muscle because it is a pretty strong spring but you should be able to tell if you are going the right way pretty easily. The wrong way it won't budge at all. Make sur to note how the belt is on there before you remove it.