I have Yukon 2005, I install on it EVO All + excalibur 70X when I start it by remote (OEM,Excalibur additional remote or from door lock switch) a car still working for 20 seconds then goes off and automatically started again, This problems stay for 3 times then a car switched off, I make reflash a Fortin but same issue, I replace it with Excalibur 70B also same issue, I checked all wiring every thing in good condtion.
But if I start a car by Key it's working fine without any issue.
This issue suddnly happend with me started before 3 weeks from now but before it's working fine.
Car battery is new I replace it before 5 months.
There is any thing need to check it more? please I need help, also I install same devices for many cars I don't face same this issue with any car excepte my car.
Please check this issue on YouTube I uploaded a video for this issue: