Start and die

Devo44

New member
Oct 17, 2024
3
0
1
Oregon
New here, not sure if its the right place to post this? Just replaced the head gaskets. Truck starts for 1 second and shuts down. No problem before repair. Batteries disconnected for two weeks. Interestingly, the windows and locks no longer work. The radio head unit stays on. No chime for doors or headlights. The OBD port doesn’t communicate with reader. Filter primes up tight and doesn’t leak. Fuel at schrader valve. all fuses are responsive. Ive checked connections and all seems well. Any ideas from the good crowd are GREATLY appreciated!
 

2004LB7

Well-known member
Dec 15, 2010
6,886
2,095
113
Norcal
You might have something interfering with the communication lines if you can't connect to the OBD. Like mentioned, try the radio. But may need to dig into it with a meter and measure resistance of the termination resistors through the lines to see if you have any shorts or breaks