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So these storms in Texas recently have accelerated the deterioration of my clear coat, mostly on the hood and front fenders, and the paint elsewhere on the truck isn't exactly showroom quality. I'm toying with the idea of painting the truck with bed liner. This thing has 430k+ miles on it so I'm...

Howdy all, I've received countless help from this forum so I thought I'd give back with my solution for a fuel pressure gauge from the tank to the cp3. A while back I was trying to diagnose a starting issue and had a rail pressure gauge set up, but nothing telling me what was coming into the...

Somebody help me with the logic here: Just got HPtuners hooked up and was messing around with the truck idling when I noticed that for the FCA duty cycle, when it was requesting 40% at idle, the actual duty cycle was like 1600%. Is that just indicative of a bad FCA or a bad pump?

Anyone know what these are or what they go to? Couldn’t seem to trace them back to anything.

I'm in the process of installing a new clutch, and while the trans was out I decided to install a new rear main seal. While putting it all back together, I'm noticing the flywheel housing has a little bit of room for movement. there's no dowels or anything to align it and I cant seem to find...

Disclaimer: I know very little about A/C systems (enough to fix very basic problems) and I'm going off of logic here. Rundown of the situation: A/c stopped blowing cold air recently. Fan comes on, but the snowflake light wont. Sometimes, if I leave it on, the light comes on and it will blow...

Anyone know if there's a cheaper option for one of these? My new rear main seal from Cummins didn't come with the ring and everywhere I've called says that the new seals don't have the install ring. I don't really want to shell out $100+ just for a tool to seat this thing properly.

Title says it all. Anyone know of a scan tool that can do these on a 5.9? I've called around to dealerships in my area and even a performance shop. Most dealership techs didn't even know what I was talking about, the performance shop said they don't even perform those tests, and one dealer even...

So, for about the last month and a half, I've been having this issue where the truck will take an extra couple seconds to start when its warm. If I cold start it, everything is fine, starts right up. But if I drive to the store or just around town and it gets up to temp and then try to restart...

Here's one for the drivetrain gurus; I've been having an issue where 4wd will engage when unlocking the truck after its cooled down or when slowly going over a speed bump (5-10 mph) but the light wont come on. I know it engages because I can either hear it when i unlock the truck, or turning on...

Its gotten colder recently (cold for Texas so like 40-50) and I've been noticing, in conjunction with the voltage drop from the grid heaters causing a little dip in idle RPM, occasionally the RPM will dip or surge on its own for maybe a second or two while I'm letting the truck warm up. Today, I...

So when I bought my truck around a year and a half ago, the PO stated that the AC was going to need some attention in the coming years, and recently I've noticed the compressor short cycling and the accumulator producing a ton of condensation when I run the AC. Since its been getting colder, I...

'07 5.9, g56, bone stock setup w/ gauges. So, I've been trying to chase down a boost issue for a while now. Initially replaced a leaky boost hose and added an autometer boost gauge w/ boost bolt in the intake. When I drive, I'm only reading ~4-8 psi unless I punch it going uphill which will get...