I am no expert on cars, however, for several years I drove limo for a local businessman and drove a Caddy Escalade for another local businessman part-time. The Caddy was always having issues, electrical, engine, etc. I got on some forums and started carrying extra relays, fuses, etc for the rigs I drove, and I do not remember all the specifics. The Caddy was mostly driven by the owner's wife(she was a smokin hot party animal). Momma got rid of the caddy and went back to the Ford Expedition.