How to OTC GM Tech 2 Scan Tool

The GM Tech 2 Scan Tool is the best option for working on GM vehicles. We carry the Tech 2 with or without the CANdi module. The CANdi module can also be purchased separately. The Tech 2 is a hand-held computer designed to aid in diagnosis and repair of automotive systems with electronic controls and interfaces. The Tech 2 has been designed as a rugged, shop-ready tool by having a sturdy case, a sealed keypad and heavy-duty cables and connectors. The GM Tech 2 Scan Tool’s diagnostic menu gives you access to four major systems: Powertrain, Body, Chassis, and Diagnostic Circuit Check. Authentic GM software in OTC’s Tech 2 Flash means you have the same information as GM dealers.


GM’s Service Programming System merges your Tech 2 Flash, a required PC*, and GM’s SPS CD-ROM, and lets you reprogram controllers on ’93 and newer GM/ reprogrammable controllers. With your PC and the Tech 2 Flash, you will be on the receiving end of software subscription updates via CD-ROM disks. Now, different service programming system products are available so you can choose the solution that makes the most sense for your business. The Service Programming System (SPS) updates the flash calibration files that are stored in a vehicle onboard controller (e.g. PCM, ABS, VTD). The calibration file custom-tailors a module to a certain vehicle. The calibration file contains data for things such as spark curves and fuel control. When troubleshooting a driveability condition, diagnosis may call for reprogramming the controller with newer calibration information to correct a customer concern.

The primary function of the CANdi module is to add CAN (controller area network) capability to the Tech 2. The basic characteristics of the CANdi module are that it supports simultaneous communications on three CAN buses and provides high-speed UART communications with the Tech 2. The CANdi module connects between the Auto Diagnostic Scanner Tech 2 Flash’s Diagnostic Link Cable and the OBD adapter. Once the CANdi module is connected, it can be used on all GM vehicle applications, even those vehicles using other platforms such as OBD I and II.

OTC, The One Tool Company that professional technicians trust. Over 75 years commitment to quality has earned that trust. They are continuously adding new technologies and features to the GM Tech-2 Flash line. Features include Flash reprogramming, the CANDi Module, GM’s SPS Service Programming Systems, and GM MDI Tool with TiS SPS Subscription. This innovation enhances the the diagnostic power of the scan tool and provides you with the very best value for your money. When you look at the true cost of ownership – the purchase price, cost of updates, cost of add-ons, range of features, reliability, training and much more – OTC Scanners stand out as the very best value for your money. OTC provides the affordable diagnostics technology you need today and to grow your shop tomorrow.

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