Engine brake question

There are 2 different modes of the engine brake on the 2017. When you press the engine brake button 1 time, that is manual mode. It will start braking when you release the gas pedal. As you brake again the truck will downshift and will brake more. When you press the button the 2nd time, this is auto mode. When you release the gas pedal it will remember the speed you are at and hold it at that speed. Press the button a 3rd time and it turns it off.

Turn on the brake, engage the tow/haul and enjoy the ride, the truck will handle the rest.

It's like the service brake; you use it when you need it.

What does your owner's manual say?

For my Duramax, the manual says I don't need the engine brake until I'm towing above 15,000 pounds. You may not even need it with the light-weight trailer you're towing.

When I tow my 19,000 pound trailer, the engine brake is always on. Once you turn it on just drive normally and it'll do what it has to do. Make sure your transmission is in manual when going down a mountain grade. Let your lower gears help keep your speed down. Your wheel brakes are not supposed to do all of the work, or even most of the work. Downshift the tranny and use the engine brake to keep your speed down; your wheel brakes are secondary braking items. Like I said before, your truck may not even know your trailer is back there.