I just had the PPV shift lever replaced with one that has the tow/haul button. It had a small connector that was plugged in to the harness. When I press the button the tow/haul light does not come on on the dash. Any suggestions?
Shift lever replaced to obtain tow/haul button
- Thread starter Jimgeorge
- Start date
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Sparksalot
Elite Member
Does it actually go into tow mode though? The easiest way to tell is the lane change turn signal. Instead of 3 blinks, you’ll get 6.
the tow haul button is a momentary switch, providing a momentary ground to the bcm
to confirm operation press the button, you should get a momentary ground to the corresponding pin on the bcm.
since it is a direct connection I don't think the key needs to be on to confirm physical operation.
you should be able to find the pin location with the gp upfitter guide.
other than that if it is confirmed working, then the key needs to be on for the tow/haul to engage
if you do not get the momentary ground then there is a break in the wire or connection between the button and bcm.
I have read of some the actual buttons being bad on the nnbs before (i think) so check that it is working between the button and wire on shifter stem also.
So this is a brand new one from the local Chevy dealer installed by a garage. So you think we need to unplug the connector and put an ohmmeter on the connector and press the button and see if the button closes the circuit?
I don’t understand. If I turn on the turn signal it blinks until I turn it off.
Ibustbravo
Full Access Member
It did not have a tow button. Most PPVs don’t have a tow button. I replaced the shift lever with one from the dealer that had a button and a connector and plugged in the connector. No tow light on the dash. It appears that it doesn’t have power.
How do I turn it on in the ECM?
you only need to check it at the bcm pin. then if no go dig further
if it is sending the ground then it might be a programming thing
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
Full Access Member
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pin 23 on connector x1 light blue?
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
Full Access Member
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
Full Access Member
I wouldn't be surprised if it needs to be enabled in the programming.
Where is pin 23?
Ebay Mike
Full Access Member
Bottom row, second from the right.
petethepug
Michael
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.
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.
