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2 Question Relating To The 2011 2500hd 6.0l Gas Model.

JLeosnow

By JLeosnow
in Towing, Hauling & Hitches

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JLeosnow Enthusiast

JLeosnow

Posted
Posted

I know.... I should know these answers but cant seem to find a solid answer in any of the Chevrolet information. I figured I would get more accurate infomation from the board members here vs. asking the dealer so here goes....

 

1) Do the gas engine models have the grade braking feature or is it only the diesel models?

 

2) I thought I read somewhere that the factory brake controller is fully integraded with the vehicles ABS system. Does this mean that when a trailer with electric brakes is hooked up to the truck the ABS function of the truck also transfers to the trailer creating ABS for the trailer brakes?

 

Thanks much,

-John

rebelman06 Enthusiast

rebelman06

Posted
Posted

Wouldn't each of your trailer wheels need to have a VSS (vehicle speed sensor) to have ABS? My understanding of ABS is that the computer tracks the reported speed of your wheels through the VSS sensors in your hubs and pulses the brakes on the individual wheels when it senses the wheel is not rotating. That is why you get an ABS/traction light when your VSS sensors go out. I would almost guarantee that your trailer brakes don't have "ABS" or pulse when your truck is skidding. There is no "signal" wire from your trailer hubs/brakes anyway. The brake pin is just a wire that powers your trailer brakes.

rgv Enthusiast

rgv

Posted
Posted

d/l the manual here.....

 

http://www.gmc.com/content/dam/GMC/global/...erra-manual.pdf

 

Trailer Sway

Control (TSC)

Trailer Sway Control (TSC)

2500 and 3500 series vehicles with

StabiliTrak have a Trailer Sway

Control (TSC) feature. If the vehicle

is towing a trailer and the system

detects that the trailer is swaying,

the vehicle's brakes are applied

without the driver pressing the brake

pedal. If the vehicle is equipped with

the Integrated Trailer Brake Control

(ITBC) system, StabiliTrak may also

apply the trailer brakes. The TCS/

StabiliTrak warning light will flash on

the instrument panel cluster to notify

the driver to reduce speed. If the

trailer continues to sway, StabiliTrak

will reduce engine torque to help

slow the vehicle.

 

 

the 6L90E gears down on its own when decending a hill, just like the Alison. It does not have an exhaust brake like the Dmax, because it relies on vacuum to provide the 'reverse' torque. Diesels are unthrottled and require the exhaust restriction to provide hold-back

rebelman06 Enthusiast

rebelman06

Posted
Posted

This quote from the manual actually answers the question:

 

 

The ITBC system is integrated with the vehicle’s brake, antilock brake, and StabiliTrak (if equipped) systems. In trailering conditions that cause the vehicle’s antilock brake or StabiliTrak systems to activate, power sent to the trailer's brakes will be automatically adjusted to minimize trailer wheel lock-up. This does not imply that the trailer has StabiliTrak.

 

 

The system cannot detect if the trailer wheels have locked up. It only cuts braking power if the vehicle is skidding.

Stevens03 Senior Enthusiast

Stevens03

Posted
Posted
This quote from the manual actually answers the question:

 

 

The ITBC system is integrated with the vehicle’s brake, antilock brake, and StabiliTrak (if equipped) systems. In trailering conditions that cause the vehicle’s antilock brake or StabiliTrak systems to activate, power sent to the trailer's brakes will be automatically adjusted to minimize trailer wheel lock-up. This does not imply that the trailer has StabiliTrak.

 

 

The system cannot detect if the trailer wheels have locked up. It only cuts braking power if the vehicle is skidding.

 

 

Exactly, it reacts to what the truck wheels are doing and adjusts the trailer brake power accordingly. So No you don't technically have ABS in the trailer, but a simulated ABS :lol:

phillyturbosix Enthusiast

phillyturbosix

Posted
Posted

I know.... I should know these answers but cant seem to find a solid answer in any of the Chevrolet information. I figured I would get more accurate infomation from the board members here vs. asking the dealer so here goes....

 

1) Do the gas engine models have the grade braking feature or is it only the diesel models?

 

Answer: Gas trucks are the same other then the engine. I had my 2009 2500 HD in for inspection recently and from the size of those calipers along with the hydraulic assist they now use, this truck can stop a train!

 

2) I thought I read somewhere that the factory brake controller is fully integraded with the vehicles ABS system. Does this mean that when a trailer with electric brakes is hooked up to the truck the ABS function of the truck also transfers to the trailer creating ABS for the trailer brakes?

 

Answer: As stated already ABS will NOT work with your trailer brakes. The trailer braking system does however sense the amount of pressure you apply to the brake pedal and ramps up the voltage to the trailer brakes the harder you push down on the pedal.

07 CC Sierra Enthusiast

07 CC Sierra

Posted
Posted

Answer: Gas trucks are the same other then the engine. I had my 2009 2500 HD in for inspection recently and from the size of those calipers along with the hydraulic assist they now use, this truck can stop a train!

 

 

 

 

I believe these new brakes could stop a train!! This truck brakes better than any other truck I've ever driven.

JLeosnow Enthusiast

JLeosnow

Posted
  • Author
Posted
This quote from the manual actually answers the question:

 

 

The ITBC system is integrated with the vehicle’s brake, antilock brake, and StabiliTrak (if equipped) systems. In trailering conditions that cause the vehicle’s antilock brake or StabiliTrak systems to activate, power sent to the trailer's brakes will be automatically adjusted to minimize trailer wheel lock-up. This does not imply that the trailer has StabiliTrak.

 

 

The system cannot detect if the trailer wheels have locked up. It only cuts braking power if the vehicle is skidding.

 

 

Exactly, it reacts to what the truck wheels are doing and adjusts the trailer brake power accordingly. So No you don't technically have ABS in the trailer, but a simulated ABS :lol:

 

 

This is what I am hoping for Stevens11. Obviosly the trailer does not have ABS but am hoping that the brake controller will duplicate the truck's brake pattern back to the trailer brakes when applied/mashing the brakes...

 

Thanks,

-John

JLeosnow Enthusiast

JLeosnow

Posted
  • Author
Posted
I know.... I should know these answers but cant seem to find a solid answer in any of the Chevrolet information. I figured I would get more accurate infomation from the board members here vs. asking the dealer so here goes....

 

1) Do the gas engine models have the grade braking feature or is it only the diesel models?

 

Answer: Gas trucks are the same other then the engine. I had my 2009 2500 HD in for inspection recently and from the size of those calipers along with the hydraulic assist they now use, this truck can stop a train!

 

2) I thought I read somewhere that the factory brake controller is fully integraded with the vehicles ABS system. Does this mean that when a trailer with electric brakes is hooked up to the truck the ABS function of the truck also transfers to the trailer creating ABS for the trailer brakes?

 

Answer: As stated already ABS will NOT work with your trailer brakes. The trailer braking system does however sense the amount of pressure you apply to the brake pedal and ramps up the voltage to the trailer brakes the harder you push down on the pedal.

 

 

phillyturbosix,

It has been my understanding that this the normal operation of any brake controller, built in to the vehicle from the manufacturer or an aftermarket controller. I may be wrong....?

 

Thanks,

-John

phillyturbosix Enthusiast

phillyturbosix

Posted
Posted
I know.... I should know these answers but cant seem to find a solid answer in any of the Chevrolet information. I figured I would get more accurate infomation from the board members here vs. asking the dealer so here goes....

 

1) Do the gas engine models have the grade braking feature or is it only the diesel models?

 

Answer: Gas trucks are the same other then the engine. I had my 2009 2500 HD in for inspection recently and from the size of those calipers along with the hydraulic assist they now use, this truck can stop a train!

 

2) I thought I read somewhere that the factory brake controller is fully integraded with the vehicles ABS system. Does this mean that when a trailer with electric brakes is hooked up to the truck the ABS function of the truck also transfers to the trailer creating ABS for the trailer brakes?

 

Answer: As stated already ABS will NOT work with your trailer brakes. The trailer braking system does however sense the amount of pressure you apply to the brake pedal and ramps up the voltage to the trailer brakes the harder you push down on the pedal.

 

 

phillyturbosix,

It has been my understanding that this the normal operation of any brake controller, built in to the vehicle from the manufacturer or an aftermarket controller. I may be wrong....?

 

Thanks,

-John

 

 

Well you might find some old trailers that don't react that way but anything newer should work like that. It's just voltage being applied to the magnets that push out the brakes. The harder you push the more voltage is sent to the trailer brakes. At least you hope it's working that way! :)

topdj Enthusiast

topdj

Posted
Posted

the 2011HD brakes can stop a train the years under that can only stop a bus :lol:. I never had any truck that stops rides and carries loads as well as the new 2011HD

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