notbob
03-24-2009, 03:00 PM
Vehicle: 1997 K3500 Diesel Dually 4x4
Some quick history, I had the transmission rebuilt <5000 miles ago, but about 2 years ago, it's been through some electrical nightmares (starter wire ground out to exhaust header, burned out ignition switch).
I had a dealer (was working 80+ hrs at the time) "fix" my truck from that problem. They disabled the after market alarm along with chopping up anything else that didn't look stock just for the hell of it. Truck ran fine for a bit then a few weeks later on the highway it refused to shift, I nursed it to my diesel mechanic who said it burned out the transmission doing that instead of stopping. So new transmission, all new electronics were put in, moved a 1000 miles, no major issues.
Ever since I got the occasional "shift solenoid a" dtc, cleared it and my truck ran fine. My speedo would stick periodically. Recently this switched to the code never going away and coming back on instantly.
Been doing lots of research on here, so here's where I'm at.
-------Problem described below-----
I don't have the fuse cover for the inside of my truck (anyone got a picture of it? would be great!), but from what I read fuse #20 is for the transmission. Checking pin e on the 20 pin (with 11 wires) connector on side of transmission I find no continuity to fuse 20 and with ign switched to run I see no +12V as I should on this pin.
I was contemplating just splicing this wire and running +12V to it to see if it fixed my problem but thought I'd check on here first, where does that wire run to? Does it run to the TCM? Can I safely just splice a new power wire to it?
I thought pin E ran to fuse #20, I have power on top side of fuse 20, and the fuse is not blown. The truck did lose dash lights once before in a previous problem.
Where is the TCM and where does it get power as well? Or can I safely assume the TCM has power as I get codes for solenoid a/b, tcm i think it was as well.
I hope I provided enough detail if not too much, this site been a great resource for reading, hope to do something helpful to contribute.
Thanks
Bob
Some quick history, I had the transmission rebuilt <5000 miles ago, but about 2 years ago, it's been through some electrical nightmares (starter wire ground out to exhaust header, burned out ignition switch).
I had a dealer (was working 80+ hrs at the time) "fix" my truck from that problem. They disabled the after market alarm along with chopping up anything else that didn't look stock just for the hell of it. Truck ran fine for a bit then a few weeks later on the highway it refused to shift, I nursed it to my diesel mechanic who said it burned out the transmission doing that instead of stopping. So new transmission, all new electronics were put in, moved a 1000 miles, no major issues.
Ever since I got the occasional "shift solenoid a" dtc, cleared it and my truck ran fine. My speedo would stick periodically. Recently this switched to the code never going away and coming back on instantly.
Been doing lots of research on here, so here's where I'm at.
-------Problem described below-----
I don't have the fuse cover for the inside of my truck (anyone got a picture of it? would be great!), but from what I read fuse #20 is for the transmission. Checking pin e on the 20 pin (with 11 wires) connector on side of transmission I find no continuity to fuse 20 and with ign switched to run I see no +12V as I should on this pin.
I was contemplating just splicing this wire and running +12V to it to see if it fixed my problem but thought I'd check on here first, where does that wire run to? Does it run to the TCM? Can I safely just splice a new power wire to it?
I thought pin E ran to fuse #20, I have power on top side of fuse 20, and the fuse is not blown. The truck did lose dash lights once before in a previous problem.
Where is the TCM and where does it get power as well? Or can I safely assume the TCM has power as I get codes for solenoid a/b, tcm i think it was as well.
I hope I provided enough detail if not too much, this site been a great resource for reading, hope to do something helpful to contribute.
Thanks
Bob