What Ecm To Use??!!!

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 86jimbo, Mar 15, 2006.

  1. 86jimbo

    86jimbo Registered Member

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    I am currently putting a vortec 350 out of a 99 suburban in my 86 blazer (carb). I sent the harness to have it rewired to a 5 wire hook up. what ecm do i need to buy for the truck? I heard a pre-97 because it didnt have the passlock, and I also hear that I need one for a 99 because the engine is a 99. Anyone know?
     
  2. gn4u2c

    gn4u2c 1/2 ton status

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