I have an 06 Silverado 6.0 I have mated with a 6l80e. I have the tcm-2650 hooked up and it runs fine, looking for help with the speedometer. I have hooked it up from the tcm-2650 pin 47 and pin 17 to the cluster and the needle jumps around. Any help is appreciated.
Going to need more info than that.
How is the TCM setup?
Stock cluster or Dakota digital? Holley?
Stock tune. And stock cluster. I know due to being class 2 data on the truck and can on the trans it?s an issue.
Stock cluster and stock tune. Haven?t really messed with the program muchOriginally Posted by TheMechanic
This may or may not help...!
I have the TCM-2650 on my 2001 Holden Commodore and have moved the speedometer output from pin 41 to pin 17, as per the recommendation of a guy in Australia with the exact same conversion. My speedo works up to 20mph and then falls back to zero. If I have the laptop connected to the car with the PCS software running, the speedo will then work at higher speeds, but starts to fluctuate. I have no connection on pin 47 on the TCM-2650.
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