GMT400 - Community Scan Tool

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studigggs

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Truck running rough? Maybe you want to throw some parts at the 'ole girl to make it right. But which part? There are so many. Perhaps you were in the driveway with the hood open, intensely staring at the engine to telepathically coerce it into functioning again when your neighbor stops by. His Uncle had the EXACT SAME SYMPTOM a few years ago. A new quick-release mudflap cured HIS problem and it still runs like new at 2 million miles. His wife IS better looking than yours, so he must know something...you try it...its only $80, a trip to AutoZone and a few bolts... dang... still runs rough. Hit the forums, the YouTube, rinse and repeat until you have an engine bay full of shiny new parts... and... it still runs like doo.

As a last resort, you venture onto GMT400.com. You introduce yourself and your vehicle, craft the perfect post, list your symptoms, list the shiny new parts you've installed all in hopes of finding the magic bullet, the ONE PART that has eluded you, the ONE PART that will solve your problem and make you love this truck again...excitement builds...You have the RockAuto.com parts tree open and you are ready to buy the ONE PART...LETS DO THIS!!!!! When will they respond, WHAT IS TAKING SO LONG!!?...Oh, a reply. It's from @Schurkey

"Connect a scan tool and read the data stream?"

Your heart breaks. You spent all your money on those shiny new parts and the security cam aimed at your neighbor's pool. You cant possibly afford a scanner.

Well, now you can...

I have an old Snap-On MT2500 laying around I'd like to donate to the forum. It should have all the parts needed to read 88-99 GMT400s, all engines, all configurations.

ABOUT THE TOOL:

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This post is not meant to be a user guide or how-to on using the MT2500. Snap-on has great forums, and there are other posts on here that explain how to use the tool. Access those for more details or how-tos. This tool is in OK condition. You will need to connect it to 12V power to turn on. The internal battery has been removed. It comes with:

(1) MT2500
(1) Primary Cartridge thru 1999 (already installed)
(1) Troubleshooter Cartridge thru 1999 (already installed)
(1) 12V Power cord
(1) Comm Cord
(1) GM-1 Adapter
(1) OBD-II Adapter (with Personality Key slot)
(3) Personality Keys (K-2, K-2A, K-9)

BASIC OPERATION:

For 88-95, you need the GM-1 adapter, comm cord and the 12V power cord. You plug the 12V power INTO the GM-1 adapter to get it to power on. For 96-99, you will need the OBD-II adapter, comm cord, and a personality key. When you plug the OBD-II adapter into your truck, the unit will power on, you select your vehicle and module (Engine, ABS, Transmission, etc) and it will tell you which personality key to insert into the OBD-II adapter. If this makes no sense, I suggest you watch some videos on the MT2500.

HOW WILL THIS WORK:

I, lets call me call me USER 1, currently have possession of the scanner. USER 2 replies to this post and requests the tool. USER 1 and USER 2 communicate in this post and over PM. USER 1 pays for shipping to USER 2. USER 2 receives and uses the scanner. USER 3 replies to USER 2 in this post, and requests the tool. USER 2 then pays for shipping to USER 3. USER 3 uses the tool for a reasonable amount of time then pays for shipping to USER 4....and so on. This way, no money should ever need to be exchanged between users. Since the unit is packaged into a USPS standard box, all shipping rates should be the same for each consecutive USER and everyone pays the same price.

NOTES:

1) I'm pretty old and am aware that there are bad people out there. I understand this scanner may not last long in the ether, but I would ask that USER X perform a little due diligence on who/where they send the tool. Use common sense, and for now, I suggest we keep it in the Contiguous USA.

2) I would like to use this post to track where the tool is by member username. So when I send it, I'll post the username of whoever is to receive it. Addresses and real names for shipping should be transmitted over private message.

3) Packaging: I cobbled together some foam to support it, and it does fit nicely in a USPS Medium-sized priority mail box. Let's keep this form factor. Its flat-rate shipping. You can pay and print online, and if the box gets destroyed, you can get a new one for free at any post office. Throw some packaging tape on it before you mail as the USPS glue is weak.

4) I'm not the most active member of this forum, nor am I very motivated, so I dont expect to do a lot of coordinating in this process. Hopefully the system as described will work with little to no input from me.

5) All joking aside, the reason I have this scanner is because of this forum and the great help I've received over the years. Happy to give back and hope it helps someone.

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So thats it. Who wants to be USER 2?
 

Vanishing Point

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As Quoted by Val Kilmer as Doc Holiday in Tombstone "I'll be your Huckleberry!" Even though I already have an Autel MS908BT that I utilize on my Reg Cab 1996 Chevy C2500, and being a retired Automotive Tech Instructor with past Red Brick experience, I'll be more than happy to pass it along once I use it!
 

Caman96

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As Quoted by Val Kilmer as Doc Holiday in Tombstone "I'll be your Huckleberry!" Even though I already have an Autel MS908BT that I utilize on my Reg Cab 1996 Chevy C2500, and being a retired Automotive Tech Instructor with past Red Brick experience, I'll be more than happy to pass it along once I use it!
I’d be leery with that^^^ name! Lol
Joking of course, one of my favorite movies.
This a great idea, hope it works.
 

618 Syndicate

You won't...
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Great idea, and very kind gesture.
I have a suggestion, that anyone who wants to use it sends a name address and active phone number in a PM to admin. Sometimes folks disappear from forums for reasons outside their control, and this would provide a means of contact.
 

Schurkey

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His Uncle had the EXACT SAME SYMPTOM a few years ago. A new quick-release mudflap cured HIS problem and it still runs like new at 2 million miles. His wife IS better looking than yours, so he must know something...
:)

...As a last resort, you venture onto GMT400.com... ...When will they respond, WHAT IS TAKING SO LONG!!?...Oh, a reply. It's from @Schurkey

"Connect a scan tool and read the data stream?"


Your heart breaks. You spent all your money on those shiny new parts and the security cam aimed at your neighbor's pool. You cant possibly afford a scanner.
I laughed my asp off. Actually had to put the computer down and reattach my asp. I just KNEW that was coming.

As Uncle Benny said; "Bloody marvelous!".
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I have an old Snap-On MT2500 laying around I'd like to donate to the forum. It should have all the parts needed to read 88-99 GMT400s, all engines, all configurations.
It comes with:

(1) MT2500
(1) Primary Cartridge thru 1999 (already installed)
(1) Troubleshooter Cartridge thru 1999 (already installed)
(1) 12V Power cord
(1) Comm Cord
(1) GM-1 Adapter
(1) OBD-II Adapter (with Personality Key slot)
(3) Personality Keys (K-2, K-2A, K-9)
That oughta do the job. I won't promise that other keys won't be needed for some applications--K25, I think, was called for to do ABS on a Solus Pro 14.2 when working on the '97 K2500. But without the newer software, the K25 doesn't do any good for that application. The '2500/older software called for K9.

1) I'm pretty old and am aware that there are bad people out there. I understand this scanner may not last long in the ether, but I would ask that USER X perform a little due diligence on who/where they send the tool. Use common sense, and for now, I suggest we keep it in the Contiguous USA.
Very generous. I have concerns about folks paying to ship it to someone else, instead of paying to receive it. Folks would be more motivated to pay if they were GETTING the device, than to move it along to the next person.

But...you set the rules. I'm impressed that you'd do this at all, so the details are yours to decide.

2) I would like to use this post to track where the tool is by member username. So when I send it, I'll post the username of whoever is to receive it. Addresses and real names for shipping should be transmitted over private message.
Wise. YOU should be included in those PMs, and receive the tracking number as well. A valid tracking number would sorta serve as a receipt that the tool has been moved along to the next person (but wouldn't guarantee that all the included items were in the package. The person receiving would have to complain about missing stuff, and then it's he said/he said.)

Does this scanner do the abs module bleed?
My '2500 with 6.2 software would not. I think I also tried the "Through '99" cartridge, and that didn't bleed the ABS either.
My Solus Pro with 8.2 software would not.
A Solus Pro with 14.2, does, using Key K25 (I think.)

Mind you, the earlier software still allows reading ABS codes, Wheel sensor data, and more...just not the auto-bleed on my '97. Strangely, it WOULD auto-bleed my '03 Trailblazer.
 
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