What Can I Do With a TECH2
Thread Starter
Burning Brakes
Joined: Feb 2016
Posts: 914
Likes: 182
From: Reidsville North Carolina
What Can I Do With a TECH2
As Far as the C-5 is Concerned, Like the Title States...
What Can I Do With a TECH2?
Used the Search Function but Really Didn't Answer My Question.
As a C-5 Owner Is This Something I Can Use? Is It Used to Tune The Car?
Please Educate Me On What I Could/Would Do With It as Far as C-5s Go
What Can I Do With a TECH2?
Used the Search Function but Really Didn't Answer My Question.
As a C-5 Owner Is This Something I Can Use? Is It Used to Tune The Car?
Please Educate Me On What I Could/Would Do With It as Far as C-5s Go
Safety Car
Joined: Dec 2010
Posts: 3,938
Likes: 498
From: Fords, NJ
Tech 2 is a diagnostic tool for the most part. It can be used to program out/in certain RPO's in the BCM and can be used to bleed the ABS brake system without introducing air into the system. The extent to which it can be used to tune a C5 is that if you have a PCM Image that will work for your car you can save the current PCM Image and flash the new one you have onto the PCM. It cannot go in and individually change the tuning tables in the PCM as can say either EFI Live or HP Tuners tuning tools. But then those tools cannot touch the BCM either.
If you do or plan to do a lot of diagnostic work on your car it can be a worthwhile tool. Most of the diagnostic charts in the factory service manual assume the availability of a Tech 2. But you have to learn to use the tool like any other computerized diagnostic tool. It has layers and layers of menues to wade through. But in certain diagnostic situations it can be an invaluable tool because it allows you to turn on and off hundreds of computerized settings to aid in the diagnosis process.
GM intentionally dumbed down the capabilities of the Tech 2 to change things to avoid law suits due to an errant technician that changed engine or emissions settings that could result in engine damage or emissions violations.
If you do or plan to do a lot of diagnostic work on your car it can be a worthwhile tool. Most of the diagnostic charts in the factory service manual assume the availability of a Tech 2. But you have to learn to use the tool like any other computerized diagnostic tool. It has layers and layers of menues to wade through. But in certain diagnostic situations it can be an invaluable tool because it allows you to turn on and off hundreds of computerized settings to aid in the diagnosis process.
GM intentionally dumbed down the capabilities of the Tech 2 to change things to avoid law suits due to an errant technician that changed engine or emissions settings that could result in engine damage or emissions violations.
Drifting
Joined: Mar 2013
Posts: 1,496
Likes: 353
From: Little Rock Arkansas
I like that the ever-knowledgeable 8VETTE7 pointed out the differences between accessibility between the BCM and the PCM because there's often a lot of confusion between them, especially when quick questions arise in the FB groups or similar about tuning. For the very basics just look at the "B"CM as controlling the "body" and the "P"CM as controlling "power" (or engine power, rather).
There are also some things that the Tech2 cannot do despite it's accessibility. An example would be the EBCM errors that are spoken of with frequency; you cannot simply use a Tech2 to program the errors out or "remove" them. If it were that simple we wouldn't have all the threads about EBCMs.
There are also some things that the Tech2 cannot do despite it's accessibility. An example would be the EBCM errors that are spoken of with frequency; you cannot simply use a Tech2 to program the errors out or "remove" them. If it were that simple we wouldn't have all the threads about EBCMs.
Melting Slicks
Joined: Feb 2001
Posts: 2,800
Likes: 356
From: Northville, MI
The Tech 2 is a bi-directional scan tool that can access all the 13 computers in the c5 corvette. That means it can scan for DTC codes, allow the adding or removing of most accessory codes like turning off the mag ride shocks to install regular schocks, fixing window regulator problems, etc. For Bi-directional it can active the ABS system to flush the brake fluid, reset the Long Term Fuel Trims, eliminate the 1-4 shift on manual trans, etc. It cannot make changes (like a tune tool) to the transmission or engine management system. For the avid DIY'er it is a great tool.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Here are two very useful TECH2 documents. One is a basic how to user tutorial and the other is a pathing document that you can use to figure out how to get to the end result that you need to test.
Well that sucked,, it didn't up load.
Well that sucked,, it didn't up load.
Last edited by Bill Curlee; Mar 30, 2017 at 11:42 AM.
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Melting Slicks
Joined: Jun 2002
Posts: 2,246
Likes: 66
From: Middletown CT
The user guide along with some other guides can be downloaded from the Bosch site.
https://www.boschdiagnostics.com/pro...combine=tech+2
https://www.boschdiagnostics.com/pro...combine=tech+2
Last edited by Greg_E; Mar 31, 2017 at 07:36 AM.
Melting Slicks
Joined: Feb 2001
Posts: 2,800
Likes: 356
From: Northville, MI
I sorry, there are only 10 on the C5. Was thinking about another car.
In the C5, the "computers" (technically they are modules) and they communicate over the OBDII compatible DLC data bus to each other. The range from you radio to your ride control, to your HVAC system. Even the Bose head unit talks to the PCM and BCM through this bus, but the CD changer talks over a "private" data bus to the head unit.
In the C5, the "computers" (technically they are modules) and they communicate over the OBDII compatible DLC data bus to each other. The range from you radio to your ride control, to your HVAC system. Even the Bose head unit talks to the PCM and BCM through this bus, but the CD changer talks over a "private" data bus to the head unit.
