auto stop/start disable question

Lamby66 · November 5, 2019

Hello, I have not been on here in a while as I sold my 2016 a while back. A friend of mine bought a new 2019 silverado and HATES the auto stop function.

Being a former modder of the BCM I figured I would look at the upfitters guide and see what it says..

Has anyone else attempted a short of BCM K9, X1 pin 12(auto stop start switch signal) to ground full time?

It would be the same as pressing the auto stop disable switch the entire time the truck is running. I could build a momentary pulse circuit also if needed, but why if its not needed. This is similar to what a lot of us did with the foglights in the the K2 series trucks

Thank you

Smoothbassman · November 5, 2019

Hummmmmmmm this might be something to try!

I don't like the Start Stop either.

buelldude · November 6, 2019

I see there is a few jumper cables out that you just plug into the back of the radio( I think that is where the connection is). I want to find out more about them.

eppieguy · November 6, 2019

5 hours ago, buelldude said:

I see there is a few jumper cables out that you just plug into the back of the radio( I think that is where the connection is). I want to find out more about them.

This is what I used and I am very happy with it, you can still use the Auto Start Stop if you want to. The switch will remember the setting until you change it and then it will stay on that setting again until you change it.

Auto Start Stop

Taz56 · November 6, 2019

1 hour ago, eppieguy said:

This is what I used and I am very happy with it, you can still use the Auto Start Stop if you want to. The switch will remember the setting until you change it and then it will stay on that setting again until you change it.

Auto Start Stop

Ohhhhhhh I like this......

lapoolboy · November 6, 2019

45 minutes ago, Taz56 said:

Ohhhhhhh I like this......

Me too! Ordering now!

Lamby66 · November 6, 2019

I printed the info for that jumper, but I think I can via the BCM (which is what is is doing but just from the actual switch connector) for the price of one diode $.05

If I wanted a logic version where it remembers my setting I could build that too.

Whats nice about the $90 version is that is is more hidden from dealers prying eyes

Smoothbassman · November 12, 2019

This is what I used and I am very happy with it, you can still use the Auto Start Stop if you want to. The switch will remember the setting until you change it and then it will stay on that setting again until you change it.

Auto Start Stop

Oh man. This is a real solution.

Pricey for just a wiring harness though.

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Lamby66 · November 12, 2019

Well my idea failed. you can not short X1-12 to ground full time, it resets back to auto stop. you need to "pulse" the circuit. The guy with the the new truck went with the auto stop disabler listed above.

Smoothbassman · December 8, 2019

Funny thing is. The Auto Stop seems to not work for me in cold weather. It hasn't shut down on me once since the mornings got below freezing.

Maybe since I'm running the heater now. Don't know but it's interesting.

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Bobv07662 · December 9, 2019

I noticed that the auto-stop hasn't been active now that the OAT has been near freezing. Last winter it seemed to be a bit more active...conspiracy theory warning ahead...maybe a super secret satellite download?

Ben Berkenpas · December 9, 2019

The auto Start/Stop doesn't activate if your Max defrost or air conditioning is on. I just keep one of them on at all times and it takes care of the problem