The service manual files are huge so they have been broken into several smaller files to be easier for you to work with. Shown first is an index file that lists the section numbers that GM used in all of their service manuals. Below are the files that make up the complete service manual for each model year.
Index
Service manual section index (Applies to all years)
1973-1974 Service Manual
X7425_73-74 maint manual section 0 thru 4
X7425_73-74 maint manual section 5 thru 6
X7425_73-74 maint manual section 7 thru 14
X7425_73-74 maint manual section 24
1975-1976 Service Manual
X7525_75-76 maint manual Section 0 thru 3
X7525_75-76 maint manual Section 4 thru 5
X7525_75-76 maint manual Section 6A thru 6Y
X7525_75-76 maint manual Section 7 thru 14
X7525_75-76 maint manual Section 24
1976 Service Manual Supplement
X7625_76 maint manual supplement (entire document)
1977-1978 Service Manual Supplement
X7725_77-78 maint manual supp Section 0 thru 5
X7725_77-78 maint manual supp Section 6 thru 24