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Discussion Starter #1
Hi everyone,
I have a 2008 Impala LT with no fog lights and no heated seats. I read that these options are controlled by the BCM, so if I upgrade my car with used heated seats and fog lights (with factory wires and switches) they will not work like factory since my BCM is not programmed for them. Question I have, if I get access to a Tech 2 scan tool, would that allow me to change the option settings on my BCM? Or are these programmed at the factory and once the BCM is programmed once it cannot be changed? Or is a new BCM needed that would have to be fully programmed to my VIN and the options added as well.
Just wondering if it would be worth investing in a Tech 2, since I see they have Chinese copies available for less than $300...


Dave
 

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You need a single VIN subscription at https://www.acdelcotds.com/acdelco/action/subscribehome to program the BCM.
Now...
This will only allow you to program the BCM with the options originally installed in your vehicle.
You may be able to lie to the software if you have a VIN for a vehicle with the options you have and want to add but GM will not give you a Calibration ID to add options.

To use the Tec 2 in J2534 passthrough mode. You'll need a laptop with an RS232 Serial port. USB to RS232 will not usually work. You can use an Expresscard or PCMCIA/Cardbus RS232 adapter.

If you have a laptop I'd get a WiFi MDI clone and install the hacked Tech2Win software on a Virtual Machine running Windows7 or a beat up old laptop that's not on your network. You can use the Bosch MDI drivers and run the Web Based TDS service programming system on your regular PC but I wouldn't trust a hacked copy of Tech2Win to not have a Trojan Horse.
 

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Discussion Starter #3

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Any Service Programming will require a laptop so you might's well get a good MDI clone. A cheap $150 laptop or even a cheap PC on a cart will do the job nicely.

GM SPS is $40 for single VIN programming for 24months.

Tech2Win will emulate a Tech 2 on a laptop. It uses a binary image of a Tech2 Linear Flash card... The same BIN file you would use to burn a new Flash card in a Tech2 or Laptop PCMCIA slot.

You can download several different BIN files from the Tech2 WiKi that the SAAB forums put up. Isuzu, Suzuki, Older GM images, SAAB, etc. https://www.tech2wiki.com/doku.php

Your Amazon seller is in China. You might as well go directly to the source in China for the known good ones.
This is my Tech 2 with a blowmolded case. It's about the same price as the one you found on Amazon.
Best Offer GM Tech2 Diagnostic Scan Tool GM Scaner

This is the same animal without the case
Full Set GM TECH2 Diagnostic Scanner with TIS2000 Software

This is my WiFi MDI clone that I bought to talk to my dads' 2014 GMC.
WIFI GM MDI Multiple Diagnostic Interface Scan Tool

All of the above will talk to your vehicle.
The MDI comes with three CDs that have Tech2Win on them.

This is a Demo of the Tech2Win software being used on European Market vehicles.

Re-programming modules requires a subscription on AC Delco TIS, a laptop connected to the internet, and an MDI or Tech2(set as a J2534 passthrough device)

If you're buying this primarily to program modules get the WiFi MDI I linked.

DrShock has some very good videos on YouTube outlining how to setup and use the MDI.

MDI Clone unboxing and setup. Use the MDI Manager directly from Bosch. It'll install clean drivers for the MDI.

J2534 MDI SPS programming...

Tech2 SPS programming.
 

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Hi everyone,
I have a 2008 Impala LT with no fog lights and no heated seats. I read that these options are controlled by the BCM, so if I upgrade my car with used heated seats and fog lights (with factory wires and popswitches) they will not work like
factory since my BCM is not programmed for them. Question I have, if I get access to a Tech 2 scan tool, would that allow me to change the option settings on my BCM? Or are these programmed at the factory and once the BCM is programmed once it cannot be changed? Or is a new BCM needed that would have to be fully programmed to my VIN and the options added as well.
Just wondering if it would be worth investing in a Tech 2, since I see they have Chinese copies available for less than $300...

Dave
You're also going to need a Heated Seat Module and a HVAC control head with left and right heated seat switches.
 

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Discussion Starter #6
You're also going to need a Heated Seat Module and a HVAC control head with left and right heated seat switches.
That's a given for the HVAC control head with seat switches, as well as a headlight switch with foglight control, both are readily available on ebay. The heated seat module - where is that located? On my 2004 Monte Carlo SS it was inside the metal frame under the seat cushion, I would assume if I bought 2008 seats it would already have the module inside of them?


thanks
 
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