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My tachometer (style that mounts next to the w/s wiper motor) was working after my 200amp upgrade and after my A2 engine harness upgrade, but now is not working after my A2 body harness upgrade. A/c ring terminal is hooked up to the tachometer a/c tap. The other cable is plugged into the...

I wanted to post a write up of just some of the parts of my 4l80e upgrade, because there were a couple things that I had questions about in the beginning that I wish I would have known. So here's my experience. My initial setup on my vehicle was an A1 series, which meant the parking brake...

Upgraded to the new A2 body and eng harness and all the gauges work except for the voltmeter. There are no unconnected wires in the battery compartment, whats wrong? Broken gauge?

What do you guys do to fix squeaky suspension? Pressure wash the shocks? Lubricate them? Replace them?

CZSU 0938 3276 read directly off the EPROM chip. Was in a box with a Serv. No 16196390

4l80 starts out in 1st gear. Shifts into second, then doesn't shift up any further. While on the road, I can shift from D into 2 and it will downshift ONLY when going above 30 MPH. When hooked up to a civi computer the transmission will manually shift through all gears. Solenoids are fine...

Does a lack of a engine speed sensor cause limp mode in the 4l80e? I have had it unplugged and plugged in and haven't seen a difference?

So I'm just finishing up my 4l80 conversion, and I'm having some "adventures" with the dash area wiring. (I used the new A2 harness) I ironed out most of the initial issues with the harness but still have a few. Engine starts, wait to start light works. Currently, none of the lights work...

So AM General thought it was a great idea to label the wire lead numbers on the relay 1,2,3,4 instead of matching the harness wire leads. Anyone know what each number on the relay corresponds to on the A2 body harness? I can make out 1: 57T 2: 29T 3 and 4 seem to be 3 digit numbers and a...

Almost done with my 4l80 upgrade, but I am using the hummer h1 ESS which goes in the oil pump drive (been told it works, hoping it does). In the off chance that it doesn't work I'd like to have a backup using the original system, with the ESS on the timing chain. So what parts do I need to...

Does anyone know where to get an a2 body harness wire lead diagram? Would be useful to know wat each wire lead numbers goes to, it's getting sticky in the gauge cluster.

So the maximum amount of water I can ford is 30 inches. That means water can only come up to a little above the rim But there's another foot or more to the actual intake. Did am general rate the max depth this way so soldiers didn't splash water over the hood into the intake? Or is this...

I was interested in why AM General lost the contract to build the new JLTV, other than the fact that they didn't want to expand their production, here's a chart showing why they lost. And in one of their interviews about their JLTV, they said the vehicle had been in the works for years...

I have acquired some nice new mile marker winch brackets (the ones that go from the frame to the shackle mounts on the winch) but the brackets do not line up with the existing shackle bolt locations. They are a couple inches off and the brackets won't even make it to the shackle holes because...

So I've seen a couple different companies that are making "smart suspension" or the likes that smooths out the ride and gives greater wheel travel and all. While that does sound so appealing, I feel like they are leaving out the fact that they take the already top heavy up armored humvees and...

Two questions I have: I have determined that the front suspension is sitting 1 inch lower than normal (15in). What are my options in helping fix this (vehicle curb weight is 5800 lbs)? (I was thinking suspension spacers or m1114/1113 springs+new shocks?) I am thinking of upgrading half shafts...

I've mainly noticed that when my Cadillac solenoid is plugged in the fan does turn off, but when going steep hills the temp just keeps going up and I have to pull over and unplug the valve to get it to cool down. I assume I should just replace the Cadillac valve? On a related issue, it looks...

So a couple days ago I went out for some off roading and came off a small slope at an angle, which caused two wheels to be off the ground (one in rear, one in front). Without brake modulation, The vehicle would not move at all with more throttle. As far as I know and understand the torsen...

So my humvee came with the TDM unplugged and never thought that much of it, I've only ever had it plugged in once and the temps ran at 190 in 60 degree weather. In the summer when its in the 80s the truck runs at 180 with the fan always on. Now (avg daily temps are around 60) truck has been...

Has anyone ever done this conversion? Seems like with the 6.5 turbos costing $4000+ this would be a cheap way to get some better mileage and power out of the 6.2. Found some discussion on it for the blazers and people seem to respond well to it...