6.5L Diesel Engine
So I purchased GMTDScan Tech and the ALDL (GM OBD1) Cable with 12 pin Connector, USB. I checked my timing and it was set at 2.4 so I adjusted the pump to get it to -0.49 which is within spec. 2 of the 3 IP bolts were loose so I am assuming the rattled loose over time. Never had any DTCs or...