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Trans lamp on while engine running is the TCM not seeing the engine running, replace the CPS, if that doesn’t do it? The TCM is bad. just had both these issues on separate trucks in the shop.

the 200amp bracket would need mods, you typically can convert from 400 to a 200amp easily, not the other way around. the front and rear mounting ears are the issue…there is a 3/4in difference, you need to trim off 3/4in of the rear mount where the the lomg bolt mounts through.

Based on the NSN, it’s a 6.2 injector…..for the 4523 pump.

The turbo trucks don’t need the old style bracket in the fender, there is a reinforcement plate installed on the inner fender…still required to have the rubber isolators, but that’s it.

99.9% of titles I’ve received from GP are Montana, the other .1 were from Utah….

remove it and plug the wire into 29T…that was how power was applied when the ignition switch is in “Run” position. It powered the AFES.

you don’t want Dex-cool, you want green 50/50 coolant, green is for cast iron blocks.

All 57 and 58 wires are Grounds..l

That’s a pressure reduction valve that feeds PS fluid to the rear differential….got nothing to do with a winch. are you attempting to sec old dried out rubber hose? Or have you replaced the old hose with new? Quite common for old dried out hose to not compress enough with hose and used clamps…

The proper belt is : https://www.hummerpartsguy.com/BELT-SERPENTINE-HMMWV%C2%AE-196900-AND-BELOW-2481MM-9767-IN_p_24342.html the tensioners are also a problem if the correct tensioner isn’t used

dude, this is 70’s technology….stop over thinking it.

Huh? I’ve literally had US military trucks with an adapter that eliminated the TDM…the Cadillac valve is a 24v solenoid, everything electrical is 24v… 24v is present at all time on the engine harness on wire 458 when the key is in the run position

You don’t need a TDM as the thermostatic switch allows and denies 24’s anyway to the TDM, the TDM is not what actuates the fan, it’s the thermostatic switch Wired to the Cadillac valve solenoid.

Version of serpentine setup determines correct belt…for OEM, that would be 3 different length belts.

My company pioneered the use and installation of the M11XX condensers with the Red dot AC evaporator…..I still have tons of parts for this application.

What’s involved? unbolt it, move the harness over…

I’ve replaced many rear evaporators…no way to do almost anything without removing the entire unit. There is no parts replacements for the motors and squirrel cages.

For the 12 millionth time….the generator pulley dictates the belt size.

let us know what you find, so far I’ve found everything I’ve needed on amazon. new calipers, rotors, pads, starter, filters, fluids….