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The stop light switch nor the TPS actually control the TC lock, the stop light switch can take the trans out of lock but the TCM controls the lockup

I am glade things are going your way! but to be clear the stop switch was not likely the issue causing the TC to lock up, unless the wiring is really fouled up.

You meant page 141 yes, just want to make sure we are looking at the same TM

Check continuity from the 290C/291C at the relay and the 290C/291C at the TCM plug, I had one trans that the wire was severed. There should not be any more components involved.

The factory gauges are notoriously inaccurate, if you are concerned put a mechanical gauge in place of the sending unit on the back of the motor. It would be rather unusual to have 90 PSI of oil pressure, it is however normal for it to change with RPM.

That should be in the maintenance TMs available for free download on this site.

I doubt any shop without military vehicle experience would know how to mount HMMWV tires, they would likely try using a tire machine, then laugh when told what they would actually need to do to dismount and mount HMMWV tires.

What are you looking for?

That would not help as the ass. is still bolted from behind the panel

Check the wire numbers connected to the relay, someone may have plugged in the wrong wire.

That may be but he should still be able to put it in diag mode and get the diag code 12 even if no codes are stored.

Just what is this rain you speak of :eek:

I am not sure why they are calling it the controller, in the civy world it was and is the glow plug controller, looks the same, uses the same round plug only in the civy world it very simply controls a relay connected to the glow plugs, I often wonder why nobody just reverts to that system...

If you remove the harness from the TCM and the light still is on in the run position then there is a short in wire 657A to ground is basically what it is saying.

That is the TSU, it is mounted in the right side of the water cross over on the front of the engine.

Any time you disconnect the EESS box nothing will work, disconnecting the EESS was not mentioned in the trans supl. only the TSU If you have a working trans light you should be able to go into the diag mode, if nothing else you will receive several number "12" codes, if not then you have ether a...

The larger the tire the faster it must turn before any miss-balance shows up, back in the day is was around 55MPH when we were running G-78-15" tires, for the 37" Humvee tire it is around 65-70 before it shows up, I would suspect on the HEMITT it would be much higher than 70mph so no imbalance...

They are not the end all, cure all. If you have tires that are out of balance and even at times when you do not you will shake as they find the balance and that is dynamic so it constantly changes with speed, even at steady speeds there are times they just decide to "recalibrate" but not too...

You may plan on replacing that 400A alt. they are nothing but trouble.

My luck I would win the transport, then I would have to buy another Humvee ;) :ROFLMAO: