How to Choose gm tech 2 Scanner on chinacardiags.com

There are a few types of gm tech2 scanner in chinacardiags.com, how to choose?

Our Seven GM Tech 2 Comparison:

Item NO.	Package	Weight	32MB Card	CANDI	TIS2000 USB Key	Hot Selling
SP23	Plastic Case	5.1	Yes	Yes	YES	★★★★★
SP23-1	Carton Box	3.5	Yes	Yes	yes	★★★★★
SP23-B	Plastic Case	4.8	Yes	Yes	yes	★★★★★
SP23-B3	Carton Box	3.2	Yes	Yes	yes	★★★★
SP23-C	Plastic Case	8.9	Yes	Yes	yes	★★★
SP23-D	Plastic Case	8.9	Yes	Yes	yes	★★★
SP23-D1	Plastic Case	8.9	yes	yes	yes	just add 1*sp23-v vci module
All of GM Tech2 are same functions,they are just from different factory. SP23,SP23-1 the same,just the package case is different,one is with plastic case,one not. SP23-B,SP23-B3 the same factory,the packing is different,one is with plastic case,one not.

2.GM Tech 2 Accessory:

Item NO.	Name	Fucntion
SO22-B	32 MB CARD	need more cards, buy so22-b to add
SP23-Z	GM Tech2 Main Unit	GM Tech 2 Multiplexer
SP23-V	GM Tech2 VCI module	VCI
SP23-J	GM Tech2 Keypad	Keypad
SP09-B	GM Tech2 CANDI	Candi with express shipping
SP09	GM TECH2 CANDI	Candi with post shipping
SF63	Main Test Cable for GM TECH2	Main Test Cable
SO104	OBD2 16PIN Connector for GM TECH2	OBD2 Cable
SO01	TIS2000 USB Key for GM cars	Work with Tech2 for GM cars' programming function before 2007 year.
SO01-B	TIS2000 USB Key for SAAB cars	Work with TECH2 for SAAB before 2008 year cars' programming.
SP235	ISUZU DC 24V Adapter Type II for GM Tech2	can do ISUZU 24V truck

How to use Tech2 for GM Module programming

There are 2 methods to program a module from a GM car using a Tech 2 scan tool:

If you’re trying to program a module, there are two methods. I don’t remember the exact terminology but one is pass-through and the other is using the Tech 2 as a go-between.

The pass-through is to use with a laptop in the vehicle and it just uses the Tech 2 as the connection between. This is the fastest and easiest way to do it.

The go-between method is for when you can’t bring the computer into the vehicle and uses the Tech 2 as a go-between. You connect the Tech 2 to the vehicle and download the module information that you want to program. Then you disconnect, run to the computer running Tis2000, connect it to the computer and download the programming information for that module, disconnect again and run back to the vehicle, connect it and it automatically programs the module. It can take a long time depending on the module (PCM is the longest).

However, if you’re getting crank but no start, it’s not the Vehicle Theft Deterrent (VTD) as it wouldn’t even crank if that was the issue.

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