Integrated brake controller on 2007 Silverado adjustments

Ask the OP if the TV's brake pads are stock or after market?

If after market and went higher performance, the pedal pressure (aka MC PSI)
will NOT be enough for the MC PSI sensed trailer brake controller.

That is one reason I'll not have an MC sensed controller...my friction materials
are +performance level and some times race level, which when hot does NOT need
as much pedal for the same amount of braking

What mkirsch is saying is correct. The IBC works off of the hydraulic brake pressure. The harder you hit the brakes the higher the gain on the IBC. Kinda of like an automatic boost. Unfortunately it dosen't work as well as an aftermarket. This is why you can get more gain by manually hitting the trailer brakes. Being firmer on the brake and then letting off would be more effective than "riding" the brake as was mentioned earlier. Also following APT's advice would also give you more braking. When I got my new truck with an IBC I had to go from 2-2.5 on my Kyosho to 7-7.5 on the IBC.

mkirsch wrote:
The IBC applies the brakes based on deceleration. In other words, the harder you spike the truck brakes, the harder the IBC applies the trailer brakes.

On the downhill runs it sounds like you are not getting enough deceleration to prompt the IBC to apply the brakes adequately.

When descending hills, you need to get on the brakes, HARD, slow down, then get off the brakes. If you are just "riding" the brakes, the controller will think you're just decelerating gently for a stop sign, and only apply "gently decelerating for a stop sign" brakes to the trailer...

The "boost" feature on the Tekonsha Prodigy controllers would help this some, as you can program it to apply a fixed amount of braking as soon as the brake light activates. Does the Chevy IBC have a similar feature?

It does not, I can only adjust the gain.

The IBC applies the brakes based on deceleration. In other words, the harder you spike the truck brakes, the harder the IBC applies the trailer brakes.

On the downhill runs it sounds like you are not getting enough deceleration to prompt the IBC to apply the brakes adequately.

When descending hills, you need to get on the brakes, HARD, slow down, then get off the brakes. If you are just "riding" the brakes, the controller will think you're just decelerating gently for a stop sign, and only apply "gently decelerating for a stop sign" brakes to the trailer...

The "boost" feature on the Tekonsha Prodigy controllers would help this some, as you can program it to apply a fixed amount of braking as soon as the brake light activates. Does the Chevy IBC have a similar feature?

It sounds like you followed the owners manual procedure since you can lock up the RV brakes. I recommend using more engine braking. Do you use tow/haul mode? In drive it has grade braking. In Manual mode it does not. I recommend using tow/haul mode and drive or manual mode to gear down to 3rd, or second when descending long hills.

I have good braking when I use the manual lever. When I apply the brakes the controller goes to 2 or three lights on the display. When applying the trailer brakes manually, I feel the brakes on the trailer slowing with 4 to 5 lights on the display. It does not seem to make any difference if the controller is set to 3 or 10.

Check to if the magnets are getting enough current. They should each show about 3 amps. Maybe some of your connections are getting a bit corroded.

I would try starting downhill at less speed. Its easier to hold speed when going slower and in lower gears.

We have a 2008 Chevy and the last few months I've had trouble with our factory controller, has been working great before this. It works than stops. I've ordered a new truck, and wondering if I should get a after marker controller, but think I will see how the new one works.