Thanks, awesome information. I appreciate it.The solenoids in the trans get power through the Instrument Cluster Fuse #11 in the Fuse panel on the left side of the dash.
I noticed your other posts regarding your gauges dropping out, and your trans getting stuck in one gear. Sounds like that circuit would be the starting point. It could be as simple as a corroded or loose fuse. I had a car where someone shoved a wire under the fuse to tap into it for an accessory, bent the pin and made connection terrible.
That circuit gets powered directly from the ignition switch. A white wire goes from the ignition switch to the fuse, then it's pink wire to the cluster and off to the transmission.
It's possible you have a connection problem at a connector, an ignition switch problem or a damaged wire somewhere.
👍, Pulled the #11 dash fuse and there was scorching on the contacts but the fuse able link was still intact. Replaced with different fuse and no dice, all gauges came back but after a minute at idel poof. Grounds you're up, thanks for the insights.Up inside the cable also.
The turn fuse that blew was driver's side rear in the engine compartment fuse box.The solenoids in the transmission are low side switched by the ECU, so a ground issue at the transmission isn't likely, and a ground issue at the ECU would cause quite a number of additional issues.
The instrument cluster ground goes to a splice pack near the ashtray, then is grounded on the right side of the dash according to service info.
The gauges themselves also have their own power at fuse #4
Do you remember which turn fuse it popped? Was it in the underhood fuse box or dash fuse box
Grounds can always be a culprit but I completely forgot about the trailer connector at the rear, that's definitely worth looking at.
Both the cluster and transmission get powered through the same circuit. Check the harness under the truck to make sure the wiring going into the trans isn't chewed or rubbing on something.
Another thing I thought of is maybe it's a worn ignition switch, maybe jiggling the key would do something? I probably wouldn't attempt it while driving though...
Thanks, gonna need it. The wiring all looks good as it comes down from the engine to the trans. What I can see if it. Cut out the trailer ext. I had spliced in. And checked rear grounds. Also checked main grounds the one to the block is covered with crap, the one to passenger frame rail is groady, and the one to the radiator support is moderately dirty. It is still acting up. Thanks for everybody's help👍.
Here is the wiring diagram for the transmission circuit including the power feed from the fuse.