If I replace a motor on 1999 chev Tahoe v8 5.7 Do I have to reset the computer to start it.. Cuz it's turning over , good pressure , good sparks, but won't start..
I am sure you disconnected the battery during the engine replacement, so during that time the ECM will have reset back to factory specs. Make sure you have the cam sensor in sync with the crank sensor, if they aren't, that could cause a no start condition. It is very easy to get it out of sync.
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