The more I drive this '04 Impala, the more I like it. My poor Escalade just sits anymore. I've got a couple of things I'm chasing down that are problematic. The horn doesn't work and I'm having trouble tracing the problem as I can't reach the fuse block to check for power and hit the horn switch inside. I put a known good relay in the relay panel and tested the horns themselves. It might be the clock spring but my cruise control works. When I lock or unlock, the horn is supposed to chirp and doesn't. The most aggravating issue is with the sun roof. It sticks opening and closing. It seems to work better is cold weather. Would lubricating it help? It feels like the motors shut off when they sense something hanging. Even with my lead foot, I'm getting 25+ mpg. Big enough to be comfortable and small enough to be nimble.