Well, I don't have the EZ-LINK, but the AutoXray site seems to indicate that it is compatible:
EZ-LINK Pro-Pack AX-35000 OBD-II Scan Tool Kit
MSRP $449.99 USD
Performs the functions of modes 1-7 of the J1979 OBD-II scan tool specification. The functions include read and display live sensor information while driving - Freeze Frame of data surrounding a trouble code event - pull Trouble Codes in plain English - clear Trouble Codes and reset Check Engine Light - access Oxygen Sensor Tests- display Monitoring Tests - show Pending Trouble Codes and an On-demand Capture mode, which records sensor values up to 29 seconds when you need it to diagnose intermittent problems.
Computer safe - WILL NOT accidentally deploy airbags, change transmission gears, affect ABS brake performance, or fire injectors and ignition systems.
Upgradeable to higher version scan tool via the Internet
1996 and newer Domestic, Asian and European OBD-II compliant vehicles
1982-1995 GM 12 pin ALDL vehicles
1983-1995 Ford EEC-IV vehicles
1983-1995 Chrysler SCI vehicles 1991-1995 Jeep vehicles
OBD-II Cable and OBD-II Mfg. Specific Function Cable
OBD-I GM, Ford, and Chrysler Cables (1 each)
Hard Carrying Case
Otherwise, why would they include the OBD-I cable?
You may have to buy a software upgrade from them, I don't know. You should try to contact AutoXray and ask. Then post the answer back here to help out others.
EDIT: On the other hand, after further investigation, you may have to buy the $80 software and cable upgrade for your scanner:
EZ-LINK GM OBD-I Software Upgrade & Cable
MSRP $79.98 USD
New EZ-Link Scanner Upgrade. When purchased with a new scanner, the EZ-Link GM OBD-I (12-pin ALDL model years '82-'95) software will be loaded at the factory and includes a 12-pin ALDL cable.
Existing Scanner Upgrade. If you already own an EZ- Link scanner when your upgrade shipment arrives you will need to call 800.595.XRAY(9729) to complete the process.
It looks like the EZ-LINK could be purchased as a base scanner or as a kit that was already OBD-I capable from AutoXray.
Mike: 1997 SE w/ 183K, aka White Horse
, Gutted Airbox w/K&N, drilled 180* t-stat, tint all around, clear corners w/SilverStars, "PONTIAC" light up tail, PEMs, NGK TR55s