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I smell toast! Sorry!!

Same components as civy transmissions, 4.8 ohms is right on the nose for the 4L80E considering you can have up to .5 ohms loss in your test leads and there is a small amount of loss in the wiring from the solenoid to the TCM plug. It is possible the PCS circuit is bad in that TCM, if you can lay...

Have you gone through the troubleshooting for code 73 in the 4l80e supplemental guide?

The trans light should be on until you start the truck then go off when the engine is started, what codes are you seeing?

I did not even notice how well I nailed the parking spot until looking at the picture. Even though I am considered permanently physically disabled by the state of Texas I rarely use a disabled spot, there are too many folks out there that are much more disabled than I am, when the wife catches...

I had a knee replaced on Aug. 12th so I was ecstatic yesterday when I went out to the shop and could crawl into the DuraVee. Man. it was great to get out on the road again today in the DuraVee even though it was only a 45 mile jog to the doctors office! The fact it rained so hard on me on the...

That would be one way to go, but just remember rivnuts do not provide as much structural integrity as a nut and washer and you would need flush fitting rivnuts and taper the hole so the hinge fits flush against the body.

I cannot say as I have not had one to evaluate but there are plenty here that have.

Fortunately the harness connectors look nice and clean so you are probably good to go there..

At least you have the "later" style PCB, makes it much easier to replace than the original one, there should be an extra hole in the body for the early style glowplug harness, probably where all the moisture came from, if you had the early style you would have needed to find and change the...

I would say that PCB box is toast for sure, it probably looks the same on the inside as the outside, you may as well drill out the rivets and see. Ol grumpy may be here also so... There are some folks with allot of knowledge that are a little short tempered when it comes to n newbies. And yes...

The very first section is the troubleshooting for the fan, it could be electrical and or the clutch is simply stuck

Ohm out the one you have and see if it is going to pin F on the engine side PCB harness pin. There are ways around everything (jury rig) but getting the actual problem fixed is always the best solution, you did not answer the other questions I asked about the PCB box.

Also if you can post a picture of the label on the PCB, being a 1986 it is possible you have an obsolete (problem) PCB to begin with, does it have one or two harness connectors going to it from the engine side? The original setup had a harness just for the glowplugs.

Does the wait light work normally? it should stay on for about 8 seconds when the engine is cold.

BTW Welcome to the SS forums!!! It is in the PCB, you can confirm that circuit breaker CB-2, wire tags #27 behind the inst. panel is not getting power before going into the PCB. Careful inspection of the connectors on the PCB is also a good idea. Can you hear the relay close when the switch is...

I also see the A/C terminal does not have a wire on it, that should be tag # 2A IIRC that tells the PCB that the engine is running but should not be keeping the alt from charging as it must be excited and charging before there will be AC voltage on that terminal

I have swapped a couple tail gates and never had an issue with getting to the nuts on the back side, challenge yes but not impossible. Of course removing the body mounts is no big deal ether, I personally would go that route before trying to drive the pins out.

Also the wire tag for the IGN terminal on the reg should be 5A, you are correct that it needs 24V to excite the alt.

First check that the relay is latching up when the run switch is on, one way to confirm this is it also powers the heater blower so if the heater blower works when in run position then the relay is likely good, this relay has a history of failure. Remember when troubleshooting (or any other...