GM Tech2 OBDii diagnostic scanner has strong capacities that is possible to project multi programming functions, cruise control included.

GM TECH2 Scanner Features:

1) GM software in the Tech 2 Flash means the most comprehensive diagnostic software available for late model GM vehicles.
2) Support for on-board diagnostics on all GM systems 1992 thru current year.
3) Removable hardware modules provide insurance against scan tool obsolescence.
4) Large, easy-to-read backlit screen.
5) RS232 & RS485 ports provide the avenue to connect future devices to your Tech 2 Flash.
6) Ability to capture stored DTCs, Freeze Frame, and Failure Record for later review.
7) Ability to view the status of vehicle diagnostic tests as they run.
8) Bi-directional The authentic GM 1992-current year software will provide full bi-directional control when performing power train, chassis, and body diagnostics.

But some users cannot/fail to enable cruise control settings with Tech2 scan tool. Take an example of a GM Tech2 owner, Here is how he did it:

1. Connect GM TechⅡdiagnostic tool to car via OBD port
2. Select Vehicle Control Systems, and navigate to Computer/Integrating Systems
3. Select Modules Replacement/Setup
4. Follow the system screen prompts, but he cannot see cruise control option

So he held a view that GM Tech 2 is not possible to activate cruise control/ has no cruise control options.

But actually, GM tech 2 would make it work.

Fobdii.com here provides all GM Tech 2 OBDⅡscanner cruise control options:

Cruise Control – Body > Instrument Panel Cluster > Special Functions > Input Tests
Cruise Control – Body > Instrument Panel Cluster > Special Functions > Lamp Test
Cruise Control – Body > Instrument Panel Cluster > Special Functions > Status Indicators Test Cruise Control – Body > Powertrain Interface Module > Special Functions > Output Controls Cruise Control – Powertrain > Special Functions > Engine Output Controls
Cruise Control Active – Body > Instrument Panel Cluster > Special Functions > Input Tests
Cruise Control Active – Body > Instrument Panel Cluster >Special Functions>Status Indicators Test
Cruise Control Cycle – Powertrain > Special Functions > Engine Output Controls > Cruise Control
Cruise Control Options – Powertrain > Special Functions > Option Reprogramming
Cruise Disable – Powertrain > Special Functions > Engine Output Controls
Cruise Enable – Powertrain > Special Functions (Natural Gas) > Engine Output Controls
Cruise Enable – Powertrain > Special Functions > Engine Output Controls

If you cannot find cruise control options, try another way around.

http://www.fobdii.com