P1819 — Buick — Internal Mode Swtich No Start, Wrong Range

P1819 (Buick): Internal Mode Swtich No Start, Wrong Range — what it means, the affected system and what to check before replacing parts.

Meaning, symptoms, causes and checks

Internal Mode Swtich No Start, Wrong Range. Source catalogue definition; confirm applicability using vehicle service information.

Affected system: Powertrain