Grounds are critical to proper operation. My 3800SC had developed a random misfire and was setting an 0300 code. I suspected that it was the coil pack or ignition module. On a hunch I removed the coils, module, cleaned the mounting surface. Then coated with conductive grease and ran a dedicated 16 ga ground wire to the mounting bracket. Started it back up, the problem was gone and the engine ran like new.
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "