1993 GMC V6 4.3L VIN # Z. The Eletronic Spark Control Module is not on the bracket next to the MAP sensor or the engine firewall. The knock sensor is actually sitting on the drivers side of the engine not the right next to the starter. Did some of these engines come without an ESC module? Thanks.
Tags: 1993, 4.3L, control, eletronic, GMC, module, Spark, v6, vin