Hey guys so i just finish my v6 to v8 swap on my 2003 silverado and the problem now its that it wont start!! Do i need to reprogramm the computer??
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Hey guys so i just finish my v6 to v8 swap on my 2003 silverado and the problem now its that it wont start!! Do i need to reprogramm the computer??
Sounds like you will need to reflash the PCM to remove VATS(vehicle anti theft system).
yea its probably the vats system also check all the grounds.