Now it's 3 years later and I have the same problem with the seat in my 05 Civic EX coupe. When I did a search, it came up with this thread. Unfortunately, no one ever solved the problem or offered a solution to fix it. My seat is driving me crazy, with all the jiggling and rocking back and forth. The bolts that hold it to the floor are tight. The jiggling is somewhere in the seat track mechanism. HELP! The dealer wants $75.00 to diagnose the problem.
Duane