I forgot to mention the macchina m2 It's hard to find one of these due to parts shortages but they can j1850 and it's not using a DLC. It's open source so it would be good a starting point if you are going to try do like obdxpro and emulate j1850.
Awesome use for it! It's really neat how with cheap and simple tools we add functionality for a feature that may have not been included stock or not working the way you wanted it to.
@@FixedUntilBroken for me I've just been continuing to build bench testing stations for other various items. I've been enjoying Ford ECU repair lately. Glad to see you still can post some videos from time to time.
@@jeffescortlx I just finished building a couple GMlan modules yesterday so I got my circuit board read for the project I just need the victims to show up 😂. In the meantime I cloned the J1850vpw circuit off the macchina m2 so I could test it out. I wanted to just buy one but they have been out of stock for like 2 years. I gave up and just copied the circuit to want to test.
You have a twisted pair but GM Class 2 is single cable, what is the 2nd cable?? Also, since the XC68HC58 is discontinued, I've seen some people in Github reading J1850 from the VPW, have you dabbled into some of that?
I just twist them so they don't tangle. The 2nd wire is ground. I tried a couple of examples I found of that and none of them worked. I know it can be emulated and work. That's how the obdxpro works. The macchina m2 also does that and it's open source.
Oh and yes I believe the chip was discontinued around 2008 I haven't struggled to source them. They are pretty cheap coming out of China, about $2.40 ea before shipping.
I'm trying to turn the Speedo on an Express Van cluster with the stock P59 into a tach. In the current software everything for the cluster is Class 2, even though the P59 has the ability to send a separate engine speed signal. If it were like the truck cluster I could literally just cross the signal wires to the cluster. Any insight as to the best way to do this? The Kodiak cluster is like the truck cluster as well with seperate signal wires. Am I missing something on the Express cluster?
The main problem you might run into non linearity in other words one cluster might expect 80hz for 60mph and the other might expect 100hz. ( i made up thouse numbers but I do remember the pulse being pretty slow. Its been a while since I played with them.
@FixedUntilBroken The problem that I have is that on the van cluster, VSS is sent to the cluster via Class 2, there is no wiring from the PCM to the cluster for either VSS or tach. I'm trying to figure out whether I can either get the cluster to accept the tach signal on a pin, or whether I am going to have to find a way to figure out where it is in the hex in the bin for the pcm, or whether I can alter the cluster. Scaling is really not a huge concern as I am going to have a custom overlay anyway.
Before going too far down the DIY rabbit hole for this, I believe Pete Sonntag ( the person who makes the OBDXPRO) Has done GMlan to J1850VPW. He talked about selling the conversion modules in the past. You might want to reach out to him. I am working on a GMLAN project but I don't have anything GMLAN to datalog. do you know the can frames and have logs?
@@hugopetit4480 frames. I've looked at the gmlan bible but I still haven't been able to get much life out of this 2009 Silverado cluster. I know my module is working because if I send the frame that asks for HV wake up the cluster will send it but I haven't been able to sweep gauges yet.
I forgot to mention the macchina m2
It's hard to find one of these due to parts shortages but they can j1850 and it's not using a DLC.
It's open source so it would be good a starting point if you are going to try do like obdxpro and emulate j1850.
Nice. I used the same ELM set up to give my Escalade a command to fold mirrors.
Awesome use for it! It's really neat how with cheap and simple tools we add functionality for a feature that may have not been included stock or not working the way you wanted it to.
Great video!
Thanks! I'm glad you liked it. Any cool projects coming up? I've been So busy with school and work I've hardly had time for projects lately
@@FixedUntilBroken for me I've just been continuing to build bench testing stations for other various items. I've been enjoying Ford ECU repair lately. Glad to see you still can post some videos from time to time.
@jeffescortlx I just ordered a E38 ECM off of eBay to play with. I need to get a BCM as well to tie to it so I can get some GMlan frames off it
@@FixedUntilBroken If you make videos on those I'll be looking forward to it!
@@jeffescortlx I just finished building a couple GMlan modules yesterday so I got my circuit board read for the project I just need the victims to show up 😂.
In the meantime I cloned the J1850vpw circuit off the macchina m2 so I could test it out. I wanted to just buy one but they have been out of stock for like 2 years. I gave up and just copied the circuit to want to test.
You have a twisted pair but GM Class 2 is single cable, what is the 2nd cable??
Also, since the XC68HC58 is discontinued, I've seen some people in Github reading J1850 from the VPW, have you dabbled into some of that?
I just twist them so they don't tangle. The 2nd wire is ground.
I tried a couple of examples I found of that and none of them worked. I know it can be emulated and work. That's how the obdxpro works. The macchina m2 also does that and it's open source.
Oh and yes I believe the chip was discontinued around 2008 I haven't struggled to source them. They are pretty cheap coming out of China, about $2.40 ea before shipping.
I'm trying to turn the Speedo on an Express Van cluster with the stock P59 into a tach. In the current software everything for the cluster is Class 2, even though the P59 has the ability to send a separate engine speed signal. If it were like the truck cluster I could literally just cross the signal wires to the cluster. Any insight as to the best way to do this? The Kodiak cluster is like the truck cluster as well with seperate signal wires. Am I missing something on the Express cluster?
The main problem you might run into non linearity in other words one cluster might expect 80hz for 60mph and the other might expect 100hz. ( i made up thouse numbers but I do remember the pulse being pretty slow. Its been a while since I played with them.
@FixedUntilBroken The problem that I have is that on the van cluster, VSS is sent to the cluster via Class 2, there is no wiring from the PCM to the cluster for either VSS or tach. I'm trying to figure out whether I can either get the cluster to accept the tach signal on a pin, or whether I am going to have to find a way to figure out where it is in the hex in the bin for the pcm, or whether I can alter the cluster. Scaling is really not a huge concern as I am going to have a custom overlay anyway.
Hi, I need my Duramax high speed gmlan talk with my h2 hummer Class 2…
Is it possible ?
Before going too far down the DIY rabbit hole for this, I believe Pete Sonntag ( the person who makes the OBDXPRO) Has done GMlan to J1850VPW. He talked about selling the conversion modules in the past. You might want to reach out to him.
I am working on a GMLAN project but I don't have anything GMLAN to datalog. do you know the can frames and have logs?
@ the can frames ? Or the vin #
@@hugopetit4480 frames. I've looked at the gmlan bible but I still haven't been able to get much life out of this 2009 Silverado cluster. I know my module is working because if I send the frame that asks for HV wake up the cluster will send it but I haven't been able to sweep gauges yet.
@@FixedUntilBroken everything work on gauge except the prnd321. So No crank no start
Doing any BCM work?
I actually have never messed with a BCM.