2012 truck will not burnout?

[ls1mike]

Hi, I've tried this from every angle but this truck will not do a burnout even with the TCS and stabilitrac button pressed and completely disabled.

The 2011s have an option "tcs off disables btm" that option is not available on this OS. Is that something the development team can add because I think that is what I need.

Any help would be great. Attached is the latest. engine_mod_87_0009.tuntrans_mod_0010.ctz

[Rhino79]

Yep, I havent seen it in the later os's. I hope it can be added.

[ScarabEpic22]

You need to resave that TCM file so we can actually open it and look in the calibration. Currently when you're saving it in V7.5 or V8 you have file access restrictions enabled.

Have you tried adjusting the Throttle Tip-In TR? As an experiment, you could disable the currently active TCS methods (spark and throttle) so see if that makes a difference. Also, look at B2804 (at your OWN RISK, if you brick your ECM it is on you).

That said, yes that parameter did exist for earlier trucks (my 07/08 E67 TBSS OSs have them).

[ls1mike]

Throttle tip in is 3 or 4 X the original value, allows up to 1000+ ftlb those are perhaps the last tables that arent completely maxed out but maybe they need to be?

Tried it with every torque management setting disabled and it was slower, pulls timing from a stop. Current setting accels better.

Trans torque reduction disabling yielded very harsh shifts at speed so went back to enabled on that as well.

Sorry, uploaded the AutoCal file. Here is the trans file. trans_mod_0009.ctz

b2804 looks like it might be the problem, any advice for setup? the values in the 1st gear column are ~ 1, 4 and 8. the warning about 3% max would mean there is basically no way for me to set this up as 99% across the board. I have tuned several LS2s all of them came out of the box maxed at 99% it seems I could use that data here?

[ls1mike]

Maxed out B2804 and rev limiter with no results. Tried enabling/disabling every torque control setting in the book, no results.

Is it the "Hill-Holder" ? Someone here has to know what's up?

Thanks, Mike

[wells]

Any luck on this? 09 same issue...

[GMPX]

A little more info would help you get an answer.
Is it a V6 with an E37, V8 with an E38? OS number, etc, etc.

[wells]

V8 e38

[Taz]

Post your tunes (ECM & TCM) ...

[GMPX]