Lml 15% throttle in gear

[clrussell]

I’ve got one for you guys. I need a little direction as I’m out of the loop.

16 gmc Denali 2500hd, tuned and non emission.

The truck will only allow 15% throttle in gear. Park or neutral will sweep to 100%

Turn traction control and stabilitrac off and it’s like a normal truck.

All this started after someone replaced the brake switch, I’ve since replaced again with gm and did the recalibration multiple times.

It really acts like a truck that’s trying to limit you from a burn out, or valet mode.

Truck has been flashed back to 100% stock with gm software also.

 

[NC-smokinlmm]

Trans codes?

 

[clrussell]

Trans codes?

None, until I flashed a stock tune back in it it had zero codes anywhere

 

[2004LB7]

Ghost code?

 

[gmc502]

bad wheel sensor?

 

[NC-smokinlmm]

Something up with the brakes?

 

[clrussell]

Ghost code?

Possible. Not sure how to check it though.

Doesn’t anyone here have an 15+ Lml they can read data on and look at brake pedal position data for me?

 

[JoshH]

Was a sensor calibration performed when the brake switch was replaced?

 

[juddski88]

Possible. Not sure how to check it though.

Doesn’t anyone here have an 15+ Lml they can read data on and look at brake pedal position data for me?

I do

 

[clrussell]

Was a sensor calibration performed when the brake switch was replaced?

Yes.

In the bcm and ecm.
Not 100% sure the ecm took properly but hard to say

 

[clrussell]

I do

This pid and the one above it are what I would like to see.

In the picture it shows pedal not learned, it has been learned since that picture.

 

[clrussell]

Just an update.

Relearned sensor with Gm dealer software and it’s fixed.

Gotta love this shit

 

[1FastBrick]

Just an update.

Relearned sensor with Gm dealer software and it’s fixed.

Gotta love this shit

How were you learning it before? Were you using the Snap On scan tool?

 

[clrussell]

How were you learning it before? Were you using the Snap On scan tool?

Yes, snap on tool.

we have 4 different snap on tools and not a single one would do it.
Also have gm “dealer level” software.. it wouldn’t.

Took it to the dealer on a whim as I have a buddy and he had it done in 5 minutes

 

[1FastBrick]

Yes, snap on tool.

we have 4 different snap on tools and not a single one would do it.
Also have gm “dealer level” software.. it wouldn’t.

Took it to the dealer on a whim as I have a buddy and he had it done in 5 minutes

Do you know what the latest version of SnapOn software you have is?
Is the Dealer level software through the AC Delco TDS website?

 

[clrussell]

Do you know what the latest version of SnapOn software you have is?
Is the Dealer level software through the AC Delco TDS website?

2 of the Snap on were updated about 2 months ago, I can look at exact numbers. 2 we haven’t updated in a few years and keep them for older vehicles. The other 2 are the latest greatest for working with newer stuff.

Yes through TDS and a cardac 2 pass through.

 

[TheBac]

Hey, at least you were able to get it fixed. Thank god for friends in the right places.

 

[clrussell]

Hey, at least you were able to get it fixed. Thank god for friends in the right places.

I agree.. wasn’t really my problem to begin with. Someone else started the project, customer brought it to us in the end to fix it.. guess he didn’t save any money there.

 

[1FastBrick]

2 of the Snap on were updated about 2 months ago, I can look at exact numbers. 2 we haven’t updated in a few years and keep them for older vehicles. The other 2 are the latest greatest for working with newer stuff.

Yes through TDS and a cardac 2 pass through.

Any chance you reported this issue to snap on?

 

[clrussell]

Any chance you reported this issue to snap on?

I haven’t, my dealer is a lost cause and I haven’t had time to call the big boys.