Typical symptoms of bad vertical gears are:1. Motor runs but no seat movement. Usually the gears are stripped.2. Motor clicks but no seat movement. A broken tooth binds up the gears, acting as a cog.3. Seat moves slightly then stops. A broken tooth binds up the gears, acting as a cog.
This product fits all 2007-2014 GM Trucks with Power Seats, Including Yukon, Sierra, Escalade, Silverado, Avalanche, Tahoe, Suburban, and Denali. The part numbers for the seat tracks which these gears fit into are : 22-80-44-17 (228044170, 22-80-44-18 (22804418), 22-80-44-19 (22804419), 22-80-44-20 (22804420), 20-77-91-09 (20779109), 20-77-91-10 (20779110).