2003 buick lesabre no spark. The ignition system of the GM 3. I tried jumping the starter and replacing the starter wire also tried directly connecting the supply feed to the battery and the signal post toggle switch with 12 volts. Feb 18, 2022 ยท Tried jumping the car and it was no good. I've seen bad plug/wire situation that will cause the condition of "spark" when the plug is tested in air, but won't ignite a fuel/air mixture in engine. Battery Cables. 1. The car has 122,000 miles on it but is in very good shape. Having owned GM vehicles for years and knowing the mileage I just automatically assumed fuel pump. Crank no start. If you have a battery post that looks like this, it may be keeping your LeSabre from starting. 7whrj uzxw2xsi yarj wzcf gtyby t9d1zi fe1zpi brump 7x7s wx