Because so much of the housing here dates to the 1980s and 90s, the truck carries what that era actually needs: standard torsion springs sized for single and double doors from that period, nylon and steel rollers, hinges, cables, and the weatherstripping profiles that fit tracks and jambs from that build window. We also carry common opener replacement parts - drive gears, sensors, wall controls - for the chain and belt units most often installed as upgrades on these houses.
What we don't stock is anything obsolete enough that no supplier makes it anymore. On rare cases - an original opener nobody's manufactured parts for in years - that's a replacement conversation, not a maintenance one, and we'll tell you that up front rather than order a part that may take weeks to source. For the full range of what we handle on these doors, our [Gurnee maintenance page](/garage-door-maintenance-gurnee-il) covers the service in more depth.