Shift lever replaced to obtain tow/haul button

[Jimgeorge]

I don’t know how to check it at the bum pin.

Is the Chevy dealer the only one that can program it or can my local garage do it.

 

[Ibustbravo]

How do I turn it on in the ECM?

I use HP tuners Mvpi2 to modify the computers on my vehicles.

MPVI3 OBDII Interface – HP Tuners

Introducing the latest OBDII interface from HP Tuners, the MPVI3. Check out MPVI3's new features and tuning and diagnostic capabilities. Learn more.

www.hptuners.com

 

[Doubeleive]

pin 23 on connector x1 light blue?

 

[Doubeleive]

I don’t know how to check it at the bum pin.

just put a probe in pin 23 and the other probe to a ground and then push the tow button to check for circuit closer

 

[TollKeeper]

I would think he needs to verify he has the MYC or MYD or M99 or MW7 on his build sheet in his glove box. If he doesnt, it is something he will need a HPTuners to turn on that feature.

 

[BlaineBug]

I wouldn't be surprised if it needs to be enabled in the programming.

 

[Jimgeorge]

just put a probe in pin 23 and the other probe to a ground and then push the tow button to check for circuit closer

Where is pin 23?

 

[Ebay Mike]

Bottom row, second from the right.

 

[petethepug]

The blinker will blink continuously if you push it past it’s stop catch the the steering wheel undoes when the wheel unwinds from turning.

If the PPV does have the momentary blink feature (that’s active) you simply need to push your blink lever until it blinks, but not past the stop catch that holds it in place.