Help w/ Co-Pilot

[GeneralTJI]

Just installed it. It's working.. to a certain degree. It lets me change levels, it registers boost across the LED's etc. It increases shift firmness/quickness, so I can tell it's functioning. Here is the problem: from what I can tell, it's trying to engage the TC in 1st gear! While I try to launch it.. doesn't matter how aggressive I have it turned up or down.. you start building above 5-6psi and all the sudden the truck tries to lurch forward.. will do it from a dead stop or while rolling in first with the brakes on... it did this a couple times, and I don't think it's doing the truck any good.. so I shut it off. And with it off, these issues go away and everything is back to normal...

What I'm wondering is if the VSS wire isn't working right. I soldered all connections, but maybe for some reason the co-pilot isn't getting any info from it?? would this cause it to try and lock up when it see's enough boost? ... but doesn't realize the truck isn't moving? How does the co-pilot know what gear the truck is in, or does it? The green LED for lockup on the co-pilot isn't lighting up ever either, even when the truck enters lockup under normal conditions.

Any help would be much appreciated!!!

 

[blk smoke lb7]

I didnt think the green light came on till under WOT and full boost.I know ATS has blow ups of wire diagrams for helping to install,mine is a 5 speed and pretty straight forward,the 6 speed looks like alot more wires and soideringWhen i first got mine it had issuses with staying lit all the time.Now it flickers at 1st goes to solid blue and WOT gives me the green light

 

[GeneralTJI]

Hmmm... the TC light didn't come on even under WOT. Weird....

Wonder if there is a way to bypass the TC control of the co-pilot? I don't need it to lock my TC, I setup my TCM tune to lock it pretty early on and at my power level I don't have trouble with it not locking... I really just wanted the co-pilot to add line pressure...

Can you link me to the wiring diagram you are looking at?? Thanks for the help man!

Also wondering if there is somewhere else I could try tapping into to get a VSS?

 

[blk smoke lb7]

Try this
http://www.atsdiesel.com/additionalinfo/6019004308/601-900-4308-INST%2005-08%20GM%20CoPilot%20v1.4.pdf

This is the page i got it from
http://www.atsdiesel.com/ats2/productdetail/6019004308/Copilot_For_GM

This 1 has co pilot tech info also

 

[GeneralTJI]

Can someone help me with what wire(s) control TC lockup? Assuming that wire is intercepted by the co-pilot.... Wondering if I bypassed the co-pilot and wired it back so that just the TCM had control... If that would fix this???!! Thanks guys

 

[GeneralTJI]

bump.....


what wires on the 20 pin connector control the tc?

 

[blk smoke lb7]

bump.....


what wires on the 20 pin connector control the tc?

I bet Ben would know

 

[GeneralTJI]

Very true

 

[GeneralTJI]

I'll PM him.. thank you for the help thus far,


I tested the wire from the TCM to the co-pilot... perfect. So that's not the issue.. and I don't think my VSS signal has an issue..?

Wonder if there is another place to tap into to get a VSS signal?

I still think my best bet is finding the wires that control TCC lockup and bypassing the co-pilot....

 

[GeneralTJI]

Looks like on both the 5 and 6 speed's the TC lockup wire is the brown wire on the 20 pin connector going into the trans. This controls the F solenoid. Looks like it's in the same place on the plug for both 5 and 6 speeds too. Tomorrow morning I plan to bypass the co-pilot with on this wire alone. Hopefully that will restore TC control to the TCM and just leave the co-pilot to control line pressure.

Probably a long shot.... we'll see....

Hopefully Ben will jump in here and confirm my findings!!

 

[GeneralTJI]

That didn't work.... Still tries to lock the tc when the copilot is on... Must not be the right wire..... Anyone know which wire controls lockup on the tcm connector? I can trace it down there and go from there...... Thanks

 

[Evan@InglewoodTrans]

Have you tried you tried calling ATS? They have never been much help to me but it's worth a try.

 

[Mike L.]

That didn't work.... Still tries to lock the tc when the copilot is on... Must not be the right wire..... Anyone know which wire controls lockup on the tcm connector? I can trace it down there and go from there...... Thanks

Try the blue wire at the copilot controler.

 

[GeneralTJI]

Try the blue wire at the copilot controler.

Thanks Mike,

I haven't gone back under to look at it... I take it this blue wire is the one coming from the co-pilot itself and I need to wire around this one? thanks,

 

[GeneralTJI]

Went back under there... only blue wire was in the factory harness, so I figured this was the one. Bingo.....

Wired it around the co-pilot and bam, my TC locks according to my TCM tune and not when I'm trying to launch the truck .... still shifts noticeably firmer/quicker so the co-pilot is still working correctly that way. I'm happy...

Thanks again for the info Mike :thumb: :hug:

 

[blk smoke lb7]

Glad you got it figured out tj

 

[paint94979]

Mike sure is a valuable resource

 

[Subman]

Damn Todd you had me worried there for a minute. Glad you got it working the way you want it.

 

[GeneralTJI]

Glad you got it figured out tj

Thanks!!

Damn Todd you had me worried there for a minute. Glad you got it working the way you want it.

Yea! I thought it was all good until I tried to launch it the first time!

Not sure why it was trying to lock the TC like it was... weird... but this seems to be a good workaround. Obviously I don't make anywhere close to enough power on stock components that I have trouble locking the TC so I really didn't need that function of the co-pilot ya know...

It shifts pretty hard on the 1-2 and 3-4... the 2-3 feels perfect. I have it on 4 out of 7... didn't make much difference even if I turned it down to level 1. Wondering if this will get better? It's not banging, but it's shifting pretty aggressively... launched it a couple times tonight and did a couple 3-4's...

Here is a video of a launch up through 4th.... let me know what you guys think about how it's shifting...

[YOUTUBE]MqDmKuG5uI8[/YOUTUBE]

 

[x MadMAX DIESEL]

Pretty sure the copilot isn't "supposed" to alter the lockup until its on its highest level anyways. So if you plan on running it on 4 even if it worked right it wouldn't mess with lock up. So your not missing out on anything.