Alright guys, i'm at my wits end trying to figure out what's going on. My brother has an 03 GT that we recently top swapped. The car initially started up fine. It did throw a P0300 code. He used the aeroforce gauge to scan and clear it. He drove it for a good 30 minutes and had no issues. He also used the aeroforce gauge to do a case learn which helped get ride of the rough idle after a 30 min drive. The car was running great. On his way home, which is about a 10-15 min drive from me, his car decided to just stall out on the highway. The car has power but it will not crank. I can hear the fuel pump priming but the car will not crank.
Could it be an issue with the security system? By the way the security light is not on.
We have the battery disconnected and will try the security relearn again during the day.
The other thing I am going to do is double check the ground connection under the ICM.
Does anyone have any more ideas?
Here are the list of mods on his car.
Tuned PCM
1.9 rockers
3" catted downpipe
Stock pulley
Aeroforce guage
L36 to L67 wiring harness from wbody store
Injector connectors for the proper connections
L67 harmonic balancer
Existing mods kept
SLP CAI
SLP Cat-Back
