Expert: Mike Evans - 12/13/2009

Question
i have a 1999  blazer with a 4.3 motor...i was wondering if the 4.3 motor out of my 96 gmc sierra 1500 would work ....with all the electrical and computer components ?

Answer
    The engine's the same, but all of the sensors and controls may not be.  However, you could just swap them over from the old engine.  4.3 engines generally last between 200,000 and 300,000 miles, is the one in the '99 really in need of replacement or is something else wrong?