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High Idle

Matt C

Matt C

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Hey guys, Im sorta new to the duramax world, finally got one! Anyway i want to do the High Idle mod on my LLY. Went to the dealer and got a pin for the ECM but it's the wrong one. The one they gave me turns out to be the same as the pin's i already had from a LB7 i did high idle on. The part number is 12084913. Does anyone have the correct part number for the LLY? I searched this site and the old site and didn't come up with anything. Thanks
 
Do you have steering wheel controls?

LLY's all came with high idle so I don't think you need to anything other than engage it. If you have a manual in the glove box, it should be in there.

My 04.5 LLY had steering wheel controls where I could turn it on and off right off the wheel.
 
It has the elevated idle for when it's really cold out, but i want to hook it up so i can speed it up when i want. Pin 6 on the bottom connector of the ECM is for PTO, push set on the cruise and it will go up to 1150 RPM, resume goes to 1700 RPM i think. Max power did a write up on this at the other place a few years back.
 
I see. Ben, (Duratothemax) has this down to a science. I'll see if I can get a hold of him.
 
Matt C said:
It has the elevated idle for when it's really cold out, but i want to hook it up so i can speed it up when i want. Pin 6 on the bottom connector of the ECM is for PTO, push set on the cruise and it will go up to 1150 RPM, resume goes to 1700 RPM i think. Max power did a write up on this at the other place a few years back.
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Your right. I'll see if I can dig up the PIN #'s for you. I don't think it's the same for the LLY from the LBZ.
 
Just a update I did find the pin's using a delphi part number. My local dealer couldn't find them but i found a place online that sells them. Got it all hooked up, works awesome. Biggest challenge was finding a place to get through the firewall, but all in all it took about a hour to do it.
 
It was mouser electronics i think. Im at work right now when i get home tonight i'll post the site and the part number. They were 36 cents a piece, cost more to ship then that!
 
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