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Do you have access to an oscilloscope? The 3126b CAT computer should be putting out J1939. Check that your diagnostic port has proper power and ground and then look at the scope trace of the data pins. One thing I have found - especially with the 3126b trucks - the data connection is not as...

I've lost 44 lbs since buying my truck. While this is a legit comment I'm actually ok with the workout. :p

LOL. Possible with the right facilities. Probably not as heavy as you think but still quite a job. Best done with an overhead crane. I wouldn't - not for some insulation. :cookoo:

An air horn inside the cab might actually injure them and get you sued for having a booby trap which is illegal in the US in your house or on your property..... would be funny as hell if you caught it on camera though! Best make sure that you hit the right button on the fob. o_O

I've used both the old style and new. The new thinner version is perfectly adequate. All it does is grip the splines to keep the nut from sliding downhill on the very slightly angled helical plane that is the threads. It's like a wheel chock on a driveway angled at 1 degree - you could do the...

The RFID thing is a cool idea but it would take them so long to find a plain old kill switch that in reality they are going to give up before they find it. Add a second one and there's just no way. If they can find those they can bypass the RFID given that much time. And with a couple switches -...

What features are you looking for? No one pays any attention to an audible "car alarm" going off. It might as well be elevator music. I question the utility. If someone wants in they are going to get in. And if that someone is in the frame of mind to break into a giant Army truck you best...

I will add that these fans are plastic and it's not a forever material. My 2008 fan already had small cracks forming in the plastic that had yellowed significantly from age. When I did my AC belt pulley I installed a new clutch and a new fan. Having a fan blade snap off and get sucked into the...

I replaced all of mine. But note that my truck was in Kuwait and El-Paso till late 2021 when I drove it home. Only 2,750 miles, but all three of my engine transducers have failed or thrown codes. It's worth the peace of mind to replace the 15 year old sensors - the boost pressure in particular...

Then something is broken. Probably the gauge considering it doesn't go to zero with power on/engine off. Test oil pressure with a mechanical shop gauge and then fix/replace whatever is broken with the stock system to get it reading correctly.

So do you not have the truck yet? Or did you just get one? You don't seem that familiar with them. My point about the AC was that it makes the defrost/defog actually WORK. For that elevation I could see the need. Remember It's "conditioning" the air - that's not just cooling. Dry air that is...

It's only in the front, but yes all of them are equipped with the suspension squat cylinder rams. This is for loading the trucks on an air-transport and not for driving them around. But what height are you using for your measurement? Cab height? If you add a habitat it will get a lot taller for...

Does the gauge zero itself when powered on? Because 60-65 is not a likely correct reading based on what I've seen on a lot of other trucks. Usually between 20 and 40.

The off position isn't important as long as the gauge calibrates itself when you turn the ignition on. If it doesn't read zero with the ignition on and engine off then you need to investigate why. Start it up and let it get to full operating temp on high idle and once the fans cycle a few times...

It's going to change with temperature and RPM...... Under what circumstances is yours reading 70? If it always reads 70 under all conditions then something is wrong. That's probably a bad reading that's not reflecting reality. The general rule is 10 psi per 1,000 RPM at a minimum. Every...

It does sound like a connection problem. But the 3126 and C7 both do have oil pump issues and the pumps for them have gone through a couple design changes so I would find out why it's reading funky and why it's bouncing when it does read. Not something you want to kick down the road on the HEUI...

You can typically touch them without significant discomfort - at 175 that's not the case - for most people anything much over 130 degrees is too hot for more than a second or two. Rear's share gear oil with differential so if gear oil was low (besides there being evidence on the ground...

Rears are hotter than fronts - which is it? Have you done a hub and wheel bearing service? Checked the oil levels in the front hubs and rear differential (and front for that matter)?

Year and model?

Yeah not the greatest approach but that is literally what the military would do. Have some grunts clean the wheel speed sensors because in their experience it's the most common issue and often corrects the problem (ABS MIL). So for someone that has no capability to talk to the computer it's at...