Chevrolet Silverado: OnStar / OnStar Services

OnStar Overview

Voice Command Button Blue OnStar Button Red Emergency Button This vehicle may be equipped with a comprehensive, in-vehicle system that can connect to an OnStar Advisor for Emergency, Security, Navigation, Connections, and Diagnostics Services...

Emergency

Emergency Services require an active safety and security plan. With Automatic Crash Response, built-in sensors can automatically alert a specially trained OnStar Advisor who is immediately connected in to the vehicle to help...

Other information:

Chevrolet Silverado 2019-2026 Owners Manual: Recommended Fuel (6.2L V8 Engine)

Premium unleaded gasoline meeting ASTM specification D4814 with a posted octane rating of 93 — (R+M)/2 — is highly recommended for best performance and fuel economy. Unleaded gasoline with an octane rated as low as 87 can be used. Using unleaded gasoline rated below 93 octane, however, will lead to reduced acceleration and fuel economy...

Chevrolet Silverado 2019-2026 Owners Manual: Security

If equipped, OnStar provides these services: With Stolen Vehicle Assistance, OnStar Advisors can use GPS to pinpoint the vehicle and help authorities quickly recover it. With Remote Ignition Block, if equipped, OnStar can block the engine from being restarted...