GM Expertec Electronic Service Information (ESI) on 5 CD's 1998, 1999

Description

GM Expertec Electronic Service Information (ESI) on 5 CD's 1998, 1999.
This is Authentic GM Technical Service Information.
I got these as a member of a car club back in the late '90's.  I never used them as they are for Window's PC's only so I have no idea how they work.  I assume they are full service manuals (except where noted) but do not know this for sure since I have never used them.
The Quick Start guide lists Windows 95 but I would guess it would be compatible with later Windows OS's - although I cannot say for sure.
Contents:
1998, 1999* Service Manuals for Buick, Cadillac, Chevrolet, GMC Oldsmobile, Pontiac:
C Car - Buick
E/Ksp - K(S5s) Car Cadillac
F Car - Chevrolet and Pontiac
G Car - Oldsmobile and Buick
H Car - Pontiac, Oldsmobile and Buick
J Car - Chevrolet and Pontiac
N Car - Chevrolet, Pontiac, Oldsmobile and Buick
W Car - Chevrolet, Pontiac, Oldsmobile and Buick
Y Car - Chevrolet
U-Van - Chevrolet, Pontiac, and Oldsmobile
E/J Tracker - Chevrolet (1998 only)
C/K Truck - Chevrolet and GMC Pickup/Suburban
G Van - Chevrolet and GMC
M/L Van - Chevrolet and GMC
P12 Chassis - Chevrolet and GMC
P32/42 Chassis - Chevrolet and GMC
(*It states that it contains "the initial release of early model year 1999 service information.  Some information may be incomplete at this time" ...)
1997, 1998 Chevrolet Corvette Service Manual
1997, 1998 Cadillac Catera Service Manual
1996, 1997 Service Manual Sections 6 (Engine) and 7* (transmission)
*Excludes GEO, Medium Duty Truck, P Series Chassis and most manual transmissions
As many as 20,000 U.S. and Canadian Service Bulletins and Campaigns, 1980 - 1999.
See the table of contents photo for complete description of what is included.