The V2 needs to be connected. The software looks for the V2 when the app starts up.
The V2 needs to be connected. The software looks for the V2 when the app starts up.
Got it! Thank you. I did not know that.
Why would people want to disable VATS, if someone were to be using the PCM in a different Chassis or something?
Oh ok, I figured you all weren't into getting your crap stolen. LOL
I am on my third 07'-09 5.3 Silverado engine conversion into a different chassis. All three required the starter enable wire mod to run. The first one I did in a Toyota 4x4 several years ago is using a 50 ohm 10 watt resistor (Radio Shack # 271-0133 $1.99 for 2). Simply grounding the wire will enable it to start also, but I didn't feel fuzzy inside. The second and third are using the stock relay box. Interestingly if I tap into the stock relay with a crank signal - no start; had to run an external starter relay and leave the original relay untouched. IM guessing GM does not want someone bypassing the start sequence from the BCM/anti theft system.
Now armed with G1220 I thought it would be cleaner and simpler to do away with the mod/wiring so I went back to the 07' LH6 to see what would happen. First I disconnected the resistor to verify no start - and no start. I changed G1220 from "+ signal" to "not used", no other changes. Flashed in the new cal. (BTW thank you for BBF) and ...no start. I reconnected the resistor and....start. I made at least ten crank attempts on each configuration.
Then I used the settings posted earlier in this thread with the resistor disconnected and....no start. I connected the resistor with those settings and...no start.
So that is as far as I got, I will try other settings when I can, and next week I will have access to the 09' engine I put in a Wrangler with the stock relay box and an external starter relay. All three engines are 5.3's with different OS's.
Can someone do a step by step of this ?
Like DL patch from here , apply patch how , ground which wire from PCM or starter .
Kind of broken information , fragmented , if you know what I mean .
Thanks .
2005 1500 HD , Custom OS3 SD tune .
2006 Trailblazer
Dinosaurs and Plants gave their lives so that we may drive , long live fossil fuel .
I have a #12612384 e38 running #12617631 2008 corvette ls3 tune. I did the vats patch and turned off vats in the vats settings section etc..., but could only get it to fire for 2 seconds. So I did the starter relay mod. It fires up fine after the second crank. I just need to somehow add a pin and wire into the x1 connector.
Starter relay mod is: Find pin 52 on the X1 connector. run a wire from it to the trigger connector on a relay( I used a narva relay with a built in resistor) and then the ground pin goes to ground on the chassis. Pretty simple.
update on my situation. I'm working with an 08 ECM. I did the patch and turned G1220 to off. It would start then die. Sounded like VATS.. Well turns out the customer forgot to plug a hole in the back of the intake and i over looked it. Big vac leak. Pluged it up and she fire right up, purrrrs like a kitten.
Thanks for all the help though guys, learned alot for the next time i get into one.