Great News! Your vehicle keeps getting better
Chevrolet technical service bulletin GM Update 20.50 for 2026 Chevrolet Equinox and 2026 GMC Terrain.
- Bulletin number
- GM Update 20.50 (GM Update 20.50)
- Component
- Unknown or other
- Summary
- Great News! Your vehicle keeps getting better. This update contains a required software change to help improve the overall software update and diagnostics process. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.
Vehicles covered
- Chevrolet Equinox 2026 2026
- GMC Terrain 2026 2026
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