Holley ECU and stock gauges
Thread Starter
Teching In
Joined: Jul 2021
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Holley ECU and stock gauges I have a 2011 silverado now with a holley terminator ecu but want to keep the old gauger cluster. The common answer seems to be either use the OEM ecu in a piggyback configuration and splice all the sensors it wants in. Or just buy some other gauges.
I've got two other ideas for options which might be better and was hoping you guys might have better info or could start pointing me in the right direction. This truck is kind of a project truck so it doesnt need to be perfect, its also probably going to get a raspberrypi/arduino for unrelated stuff.
I was thinking either figuring out what the ECU was outputting and have a rpi get the inputs its needs and output that on the gmlan bus (pretty sure this goes to the BCM). Or figuring out what the gauge cluster expects and having the rpi output that directly to the cluster. Or doing some hacking to the cluster and having the rpi control the gauge servos directly.
Currently I'm missing fuel, speed, tach, coolant temp, odometer, shift position and any lights. But the turn signal lights currently works so thats something.
Just wanted to see what other people think might be the easiest path to make this work so I can start digging in to it. Or if anyone has any reference info. I found the GMLan bible on here, so I think this is the right place to ask.
I've got two other ideas for options which might be better and was hoping you guys might have better info or could start pointing me in the right direction. This truck is kind of a project truck so it doesnt need to be perfect, its also probably going to get a raspberrypi/arduino for unrelated stuff.
I was thinking either figuring out what the ECU was outputting and have a rpi get the inputs its needs and output that on the gmlan bus (pretty sure this goes to the BCM). Or figuring out what the gauge cluster expects and having the rpi output that directly to the cluster. Or doing some hacking to the cluster and having the rpi control the gauge servos directly.
Currently I'm missing fuel, speed, tach, coolant temp, odometer, shift position and any lights. But the turn signal lights currently works so thats something.
Just wanted to see what other people think might be the easiest path to make this work so I can start digging in to it. Or if anyone has any reference info. I found the GMLan bible on here, so I think this is the right place to ask.
Thread Starter
Teching In
Joined: Jul 2021
Posts: 10
Likes: 0
When you say can do you mean GMLan? I thought that was GMs version they use but its basically canbus. What custom module are you talking about? Something like an arduino or rpi? I havent seen anything off the shelf that does this. If your friend can point me in any right direction I would appreciate it.
Thanks
Thanks
Its nothing you can buy. He had to first crack GM's can bus signals to the cluster then crack holley can out and then make a custom module to translate holley signal to what GM wanted for the cluster basically.
