2021 Chevrolet TrailBlazer — Maintenance Guide
Complete maintenance schedule, recommended fluids, parts and estimated costs.
Recommended Fluids
Engine Oil
5W-30
4.0L
Bulb Sizes (5)
Backup / Reverse7440/7443, T15/921/912
Brake / Tail7440/7443
DRL7440/7443
InteriorT15/921/912
Turn Signal7440/7443