1989 deVille cranks but doesn't start intermittently; read something about a poor factory grounding issue. Was so bad GM issued a retrofit fix kit w/L bar. Anyone know the particulars?
Having a known mechanic shop examining 1989 Coupe deVille that has prob consistently starting. Has 54K orig
miles. When it deigns to start runs great, but often just cranks w/o turning over. Read that '89 year for Sedan &
Coupe deVilles had poorly designed factory ground - so bad GM issued retrofit kit to fix. Car also has after-market
security system.