LML problems

[Matt allen]

Bought 2012 LML fully deleted and tuned. A/C does not work. A/C controller does not communicate with ecm. I have no idea who tuned the truck. Have been told this happens sometimes when a truck gets tuned. How can I address this problem??

 

[2004LB7]

Try full flashing the stock tune in again and see if it still doesn't work

 

[Matt allen]

I don’t have the stock tune to flash it to

 

[Chevy1925]

I don’t have the stock tune to flash it to

Gunna have to find someone who can and who can also flash in a delete tune after.

 

[Matt allen]

10/4. That’s the problem I’m having is finding someone to do it. If I load an H&S tune in it for a deleted truck will it over write everything that’s in it now without having to go back stock?

 

[2004LB7]

Going, temporarily, back to stock is what you need to do to test the A/C to see if it is tuning related. Yes flashing an H&S tune will overwrite your existing tune

 

[Matt allen]

Ok, so if I was wanting a different tune anyways, I could load the H&S in and if it overwrites what’s in there, I could have a new tune and possibly A/C working

 

[Matt allen]

Is that correct?

 

[2004LB7]

Possibly but, depending on the segments that are changed in the H&S vs the existing tune, it may not flash over everything. Best to start from stock with a full flash before going H&S

 

[Matt allen]

10/4. Thanks for the help. That’s what I’ll do