Creeping at stops

[mldavis2]

I happened to notice that the owner's manual on page 5-62 says "if your vehicle is equipped with an automatic transmission, don't let the vehicle creep forward."

Can anyone explain why not? I have used this technique on all my cars for decades to avoid the "hot spot" on the rotor that is trapped behind the caliper after a hard stop such as a downhill exit ramp off the highway to a stop light. If you make a habit of hard stops without letting the rotor turn a little bit, you will allow the rotor to cool unequally and cause rotor warp which then results in a pulsing brake pedal and stops.

Bottom line is that I'm going to ignore that directive UNLESS someone can explain why they tell you not to do this on this car. Does it cause confusion in the computer system? Why or why not?

 

[Kazz]

I think we need to see more of what context that statement is made in...

 

[Aquadog]

Can't remember where I read or saw it but it has something to do with the transmission. It may have been in the drivers manual .

 

[SonomaGT]

I read that too - was in the owners manual. Maybe in the section describing the transmission turn off while stopping?

 

[mldavis2]

Obviously that would eliminate the Stop/Start function since you wouldn't be "stopped" by computer-definition. I can't imagine any damage potential since you can simply disable the Stop/Start manually and the transmission is turning the torque converter then anyway. Is it one of their over-blown safety warnings? Or is there some computer/mechanical reason? I for one hate warped brake rotors and that's the best way to avoid them for the life of the car. I'm an old service manager and I can't think of any reason for that statement. Page 5-62 in the online manual (printed manual or Stinger-specific manual might be different.)

 

[Clearly Canadian]

The manual has a few lost in translation sections. I took it as a safety duh statement. Don’t creep forward when you intend to be stopped (oh no!).

Alternatively maybe the Koreans have put in some very subtle messaging to the English speaking world—don’t be a creep?

 

[Chris]

I know that with a dct that is horrible because the car is basically riding the clutch. In a trans like the stinger has it is not as bad but still not great for the transmission.

 

[mldavis2]

I know that with a dct that is horrible because the car is basically riding the clutch. In a trans like the stinger has it is not as bad but still not great for the transmission.

I was a GM Master Technician back in the '80's. A torque converter is always pulling with engine RPM at idle (dependent upon the stall speed at which the converter is designed) which is why cars do creep if your foot is off the brake. The Stinger is a torque converter transmission. Whether it is stationary or creeping, the converter is under a light load and spinning. I'm sorry, but I can't accept that there is potential damage to the transmission unless/until someone can explain what I don't know. The only thing I can think of is that the stall speed of that converter is so low that the Stop/Start feature is designed to prevent overheating the torque converter at normal stop light timing. That may also be the reason for the Stinger's good hole-shot performance.