Tuning on the Tow/Haul switch?

[tim94gt]

Hi,
I tried a search but did not get the results I was looking for.

I am going to get my truck tuned soon(05 2500HD 6.0L) and want to put the tune on the tow haul switch. I want to keep my stock tune for street driving and use the tow/haul to change to the custom for track/spirited driving.

Has anyone done this? Any Pro's/Con's?

Thanks,
Tim

[custm2500]

I don't think you can do this. You can have tow/haul run much firmer shifts but I think that is about it. Maybe I am wrong but this is how my tune is set up and I don't think there is any other way.

[tim94gt]

I remember reading a tech article a few years ago in GM High Tech Performance, they did it but I never saw a followup on how well it worked out. They were calling it the "haul ass switch"

Either way, I'll probably try it. If it works out, I'll let you guys know.

[Fasglas]

I'm not saying it can't be done, but it seems like I read on here somewhere that the tow/haul button only changes the transmission programing. :dunno:

[tim94gt]

I'm not saying it can't be done, but it seems like I read on here somewhere that the tow/haul button only changes the transmission programing. :dunno:

After doing some more research, it seems that you are right. In the article, http://www.gmhightechperformance.com/tech/0504htp_2004_chevrolet_silverado_modified_truck/autocross_results.html I misread. I thought that they were tuning the tow/haul but they were just changing shift points and turning TQ management off.

Thanks for the help.

Tim

[ChevyPanther72]

dang, that sucks that would have been freakin awsome!