i have a 2003 dmax 2wd.i just downloaded the hypertech loader and it asked if i had traction control:confused: . is there any way to find out if i have it or not.

thanks, chris

Get on something slippery and stomp on it. You'd feel the traction control kick in. I doubt that you would have it on that truck but, I could be wrong.

No traction control on these trucks.

i have a 2003 dmax 2wd.i just downloaded the hypertech loader and it asked if i had traction control:confused: . is there any way to find out if i have it or not.

thanks, chrisSure you do.............. its that thing at the end of your right leg):h

Sorry, just couldn't resist........... BTW, Welcome to the dieselplace :D

thanks for your help

Ah, and the journey for more power begins... It will only get better from there..

You don't have it on these trucks.

If I'm not mistaken, what hypertech means by "traction control" is antilock brakes (abs)......

If I'm not mistaken, what hypertech means by "traction control" is antilock brakes (abs)......
No, I called hypertech and they told me that it was on suburbans and yukons. My wife's old grand am had it for ice and the like. Our trucks don't have it.

my wifes impala has it , uses antilock brakes to stop the spinning wheel. youd know it if you had it because theres a 3" button on the dash that says (traction control) to turn it on or off. :ro)

Wife's 01 Yukon XL 1500 has it factory std. As the 5.3L has a "fly-by-wire" throttle control, the traction control simply monitors the ABS wheel sensors and if it sees the rear wheels (one or both) starting to spin, then it simplys reduces the throttle on the engine (again, the butterfly is computer controlled and opened/closed through the use of an electric stepper motor, not a throttle cable) to stop the wheels from spinning. Push a button on the dash to disable it.

GM could easily put traction control on the DMAX as you only need to put the code in the computer. Our motors are fly by wire throttle controled (via injector pulsewidth as we have no throttle butterfly), and we already have the wheel sensors installed.

Well, all true, and somewhat true....

We had the option of (limited slip differeintial) or (traction control) when ordering the C4500 / C5500 MDT's. Traction control does interact with the ABS, but also cuts the engine HP by 20% (and you would definitely feel that when it happens). On the other hand, when on the wet and slippery, the reduction in HP/tap on the ABS really makes a difference when it kicks-in. Especially when you find your back end trying to race your front to the finish line. We've had it on our two last mid-sized chevys, and have been very please with the safety and security the T/C provides during the winter months. The system is also smart enough to detect and tell you when you hit patches of ice (black-ice) on the roadway at night, when you otherwise would never know until its too late.

This feature may not be available on pick-ups since the weight distribution F/R is so different that the T/C may not be a advantage in most non-loaded conditions.

this is what happens in a 2001 impala:

Traction Control System (TCS) (NW9)
When drive wheel slip is noted while the brake is not applied, the EBCM will enter traction control mode. First, the EBCM requests the PCM to reduce the amount of torque to the drive wheels via the requested torque signal circuit. The PCM reduces torque to the drive wheels by retarding spark timing and turning off fuel injectors. The PCM reports the amount torque delivered to the drive wheels via the delivered torque signal circuit.
If the engine torque reduction does not eliminate drive wheel slip, the EBCM will actively apply the drive wheel brakes. During traction control braking, hydraulic pressure in each drive wheel circuit is controlled to prevent the drive wheels from slipping. The master cylinder isolation valve closes in order to isolate the master cylinder from the rest of the hydraulic system. The prime valve then opens in order to allow the pump to accumulate brake fluid in order to build hydraulic pressure for braking. The drive wheel inlet and outlet solenoid valves then open and close in order to perform the following functions:


Pressure hold
Pressure increase
Pressure decrease

New to diesel truck world, however have always ordered my trucks and auto's with posi. When ordering my 04, ordered the "locking differential-rear axle" option, I assume that's like posi! Dealer did say something about acting like posi (a generic term I use that includes limited slip). I hope that this option is not the one GM uses by applying the brakes to limit slip - that's a waste of brake life and power.
Any one have a better description of how this works OR is it a real option? thanks

Our diffs on the trucks LOCK, they don't limit slip. Under 20MPH your rear end will LOCK and both wheels will spin, or grab, one of the two, there is no brake pressure applied or anything, if you wanna smoke the tires off, giver man, the truck won't stop you!!

Your truck has an Eaton locker rear end. No traction control.