LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> GMC >> 1991 >> Syclone V6-262 4.3L Turbo >> Repair and Diagnosis >> Powertrain Management >> Ignition System >> Ignition Timing >> Adjustments
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Ignition Timing: Adjustments


To set ignition timing on this engine, put EST in bypass mode by disconnecting the timing connector. This is a single tan wire with a black stripe. This timing connector breaks out of the taped section of the wiring loom below the heater case in the passenger compartment.