Help please
#1
Help please
Hello everyone I have a 2004 silverado 4.3 got tires of the little v6 so I bought a wrecked 2006 silverado 5.3 took of motor, transmission harness resealed engine and put everything on my 2004 now truck won't start I have no pulse I used the 2006 wiring harness computer and ecm fired up once for like 4 seconds and could never get it to start again .😓😓
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