Drove the truck up on ramps, loosened the header to exhaust pipe connection, put on some RTV, reassembled and now, truck will not start. Starter spins the engine, will not fire. Dash screen reads 32 degrees, but it is about 70. Tried to relink vats with the scanner--says failed to unlock?? Any ideas. Scanner shows spark, injector pulses, Thanks
Disabled both vats and starter diag--write entire---still no start