1991 GMC Vandura 2500 Q&A
1991 GMC Vandura 2500 Question: idler pulley replacement
This is the best to go to really find out the factory method. http://bit.ly/alldata_repair_manuals - dandd
If the a/c compressor is taken out then how would the serpentine belt be rerouted? Or does it have to be replaced and not taken out if there is a serpentine belt?