casey.mikl

Need to see if there is any codes stored. Could be various different things. Sent from my iPhone using Tapatalk

Pull the plugs and see if they are oily. Probably starting to burn oil. Sent from my iPhone using Tapatalk

Maybe can replace it with a switch that doesn’t have the auto option. Not really sure If tha would work or not. Sent from my iPhone using Tapatalk

The off portion can be used when the truck is turned on. You can switch it down to off and they will stay off until you turn the knob back down and they will go back to auto. My 2011 is the same way. Sent from my iPhone using Tapatalk

https://www.crutchfield.com/p_120GMOS04/Metra-GMOS-04-Wiring-Interface.html Get an adaptor harness like this. Don’t cut the factory harness. I don’t know what options your truck has. Look on there and select the appropriate options. If you don’t use the right harness you will loose door chimes and turn signal chimes. Sent from my iPhone using Tapatalk

Fuses, main wiring harness at the rear of the truck. Should be under tail gate behind the bumper. Connects main harness to the tail light harness. Make sure connection is good and clean. Sent from my iPhone using Tapatalk

Stuck down? Probably need a new switch. If it’s on the shift lever. You will probably need to change whole lever Sent from my iPhone using Tapatalk

I would probably not do a flush, but I would drain it all out and add new fluid. When I did mine before I had the trans rebuilt. I disconnected 1 side of the cooler (passenger side) and put a pipe over it. Started the truck and pumped the old out and added new in. Probably not the best to do. But it worked for me. Sent from my iPhone using Tapatalk

Change the trans fluid and filter. The transfer case takes the same fluid as the trans. Dextron 6. The 6L90 is a great transmission. I got 100k out of mine before it needed to be rebuilt. The torque converter went bad and sent metal throughout the transmission. Change the diff fluids with the correct weight gear oil and regular oil changes. I used 5-30 Mobil 1 full synthetic. I go off of the trucks oil life in the cluster. I drive mine maybe 5k a year and almost every time it’s hauling a load. The 6.0 is a great motor. Makes great power. My truck has a K&N Intake (was on it when I bought it) plus side is the cleanable filter. A tuner would help out a little with power and fuel economy. If it is an extended cab 2500HD (not sure if they had it in 2008 but they did in 2011) the center link for the steering will have a rubber bushing in the pitman arm. You can get a non isolated center link and pitman arm off a 3500hd and it will bolt right in. Mine had it and the bushing was shot causing a lot of play. The non isolated model has more feel in the steering wheel. But no bushing to go bad. Sent from my iPhone using Tapatalk

I would assume the blower resister is probably bad. Sent from my iPhone using Tapatalk

I wouldn’t replace the Torsion bars as you can just crank them to lift the front of the truck. If the leaf springs and height difference are bothering you that much you can change the rear leaf. Or possibly add weight in the rear to the passenger side. Maybe it will bring it down level Sent from my iPhone using Tapatalk

https://www.jegs.com/i/Danny+Bee/294/LB-01/10002/-1?gclid=EAIaIQobChMIsuWsp7iV5QIVRL7ACh3rnAOuEAQYASABEgLGkfD_BwE You can get a set of these and only use one and see how it does. Sent from my iPhone using Tapatalk

The issue is that weight over the time span of when the truck is new. That extra weight over time has caused sag in the driver side spring. There’s many variables that can cause the lean. As also stated any time the truck is driven, you or someone is always in the driver seat. Thus adding more weight to the driver side. Over time causes sag and fatigue on the springs. Sent from my iPhone using Tapatalk

Yep that will do it too. Plus there’s always a driver in the driver seat. So that added weight as well could sag the springs slightly Sent from my iPhone using Tapatalk

Leaf springs are about the only way to level them out. Unless you have some type of shim made to go between the leaf and the axle. I don’t believe anyone makes them that small so you would have to probably have some made Sent from my iPhone using Tapatalk