Limp mode with no codes

[easydays]

Hello
I have 2007 Yukon 4wd
Looks like in went to limp mode
Can’t get up to speed.
Only light on is traction control
No codes come up
I change the front house hubs and sensors And the brake light switch
No issue with engine runs fine.
Yet is in limp mode.

Any ideas. I haven’t been able to use it in 3 weeks

 

[B-train]

Try pulling the ABS fuses and see if it changes anything. It may get you moving faster than limp speed...

Otherwise you need to scan it and see what codes you have. Did all of this happen after the repairs and brake light switch? Or did you replace thinking it was the cause?

 

[B-train]

Try pulling the ABS fuses and see if it changes anything. It may get you moving faster than limp speed...

Otherwise you need to scan it and see what codes you have. Did all of this happen after the repairs and brake light switch? Or did you replace thinking it was the cause?

 

[Doubeleive]

Hello
I have 2007 Yukon 4wd
Looks like in went to limp mode
Can’t get up to speed.
Only light on is traction control
No codes come up
I change the front house hubs and sensors And the brake light switch
No issue with engine runs fine.
Yet is in limp mode.

Any ideas. I haven’t been able to use it in 3 weeks

you need a scanner that can read body codes, traction control is not OBD so you need something like a tech2 or snap-on, etc
if there is no abs light on then it could be drivetrain related such as a transmission issue
you can try disconnecting the battery but it may not be any help.
limp mode is commonly caused by the throttle body but if there is no obd code it's probably not the throttle body.

 

[easydays]

Try pulling the ABS fuses and see if it changes anything. It may get you moving faster than limp speed...

Otherwise you need to scan it and see what codes you have. Did all of this happen after the repairs and brake light switch? Or did you replace thinking it was the cause?

All was because it went to limp mode

I have scan it. Numerous times. No codes come up
No miss fires

 

[Doubeleive]

All was because it went to limp mode

I have scan it. Numerous times. No codes come up
No miss fires

Scanned it with what exactly?

 

[Fless]

Scanned it with what exactly?

^^^ This, what scanner? You need to use a scanner that reads body/chassis codes in addition to the run-of-the-mill scanner that reads only OBD or powertrain codes.

 

[easydays]

^^^ This, what scanner? You need to use a scanner that reads body/chassis codes in addition to the run-of-the-mill scanner that reads only OBD or powertrain codes.

i scan it with a obd scanner , looks like i have to scan body code scanner

 

[easydays]

any recommendations for a body code scanner ?

 

[tom3]

Whoa, didn't think an 07 had all that voodoo stuff that would disable the engine like that.

 

[swathdiver]

any recommendations for a body code scanner ?

A Tech-2 or any bi-directional scan tool man. It can query all the modules for codes and see the failure records, a recording of what was going on when the issue occured.

If that light is on, there's codes stored somewhere related to it.

 

[Doubeleive]

tech2 clones are about 3 bills on chinacardiags
a vcx nano will replicate tech2win and runs about $100 but can be a bit of a headache to install and get working you have to be computer savy.

 

[Geotrash]

This will do all of the modules as well:

iCarsoft i900 General Motors Gm Obd2 Car Truck Diagnostic Scanner Tool Reset Erase Fault Code https://a.co/d/j1USelC