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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:

They probably just do not want to mess with it, I would assume all Discount Tire shops have the same equipment

That is probably true, I find the "critical" speed to be around 70mph

You will have to mount your own tires as a tire machine cannot be used, if they try it will likely damage the rim. I have never heard of a shop that will mount tires for the HMMWV. I get mine balanced at Discount Tire as they have balancers with lifts to handle the heavy tires.

If you do not have a trans light then going into diag mode will not make any difference. Unhook the batteries then remove the main harness connector at the TCM box, reconnect the batteries turn the run switch on (you should have the TSU disconnected while you are working on electrical issues)...

Very nice truck!!

On an automatic transmission the "flywheel" is called a flex plate, you would need to drop the transmission to replace, rotate the engine slowly while inspecting the teeth on the flex plate. First remove the dust cover and see what is going on, if you see something post some pics.

You need to inspect the flywheel (flex plate) teeth, many times there will be a bed spot necessitating the replacement of the flex plate

https://image.nsnlookup.com/equipment-intelligence/land/hmmwv/technical-manual/tm-9-2320-280-20-2/tm-9-2320-280-20-2.pdf Starter replacement starts at paragraph 4-8 You should download the first 8 or so TMs at this site, If you fully read the -10, operators manual I will guarantee you will save...

It is not likely the booster would give you pump noise and rough steering, me personally I would much rather replace a booster than a pump. Have you replaced all the o rings in the high pressure hose fittings and all the return hoses? If the system was working fine and not low on fluid and then...

ikoinu has a great point, you have not described the noise nor have you said if the belt was loose or tight, failing brackets/mounts for various components can cause noise and a loose belt which can effect the steering. Bad or seizing idler pulleys can cause all kinds of symptoms So is it a...

I darn sure would, do you know where I can get one cheap?

54C is the fuel solenoid circuit, on some vehicles the diode is used for noise suppression, in some cases may be used to suppress radio interference but not likely here as the solenoid is ether on or off so would not be an interference issue. In any case you should unplug it as it is possible...

No, the 242 does not have that input shaft available as far as I know, but there were several different renditions of the 242 so I would think it might be possible, with the absence of a clocking ring it is a rather moot point unless you want to build one from scratch as I did, I actually ended...

Welcome to the SS forums!! You may want to score yourself some of the 5 point torx bits so you can take the top off of the IP. What did the fuel filter look like?