CDL PSA

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

kcjaz

SILVER Star
Joined
Feb 7, 2016
Threads
381
Messages
3,907
Location
Olathe, KS
I know most folks probably know this, but you should keep your CDL locked on steep inclines and declines. I was once told that it was a good idea to unlock the CDL on declines with switchbacks to make the hairpins easier. Also, you have to unlock the CDL to use the turn assist feature. I’ve play with this on Black Bear Pass of all places and was fine but that’s not a good idea.

A friend of mine recently experienced what can happen on steep downhill with his CDL unlocked. He was at the steps section of blackbear and had to have both feet on the brake pedal all the way down to come to a stop and stay stopped. If he let off at all the truck would skid forward. Not what you want on blackbear. Very scary. He locked the CDL and backed up a bit and then was able to complete the decent with no issue.

There are lots of videos that explain what’s going on with without the CDL locked. While there are times, you may want to unlock your CDL, steep up or down isn’t one of them.
 
Yup, agreed. Without CDL, it's effectively AWD. When any single tire lifts or slips, engine braking affectively goes out the door. Ledges or loose rock (i.e. marbles) are a great reason to keep CDL (aka 4x4) engaged.

I'm surprised your buddy needed that level of pedal pressure however. Is he using low range enough to avoid fading the brakes?
 
Yup, agreed. Without CDL, it's effectively AWD. When any single tire lifts or slips, engine braking affectively goes out the door. Ledges or loose rock (i.e. marbles) are a great reason to keep CDL (aka 4x4) engaged.

I'm surprised your buddy needed that level of pedal pressure however. Is he using low range enough to avoid fading the brakes?
He’s got 3.9s on his 2020 so he’s geared lower than my 2015 with 4.88s. I’ve followed home down a lot of steep trails. He knows how to engine brake. He did recently change his brake pads but not the rotors. It’s possible they were not seating 100%. I think what he experienced is mostly what is shown in several YouTube videos.
 
Youtube links?
 
Last edited:
Back
Top Bottom