Engine Starts in Gear. GMC Truck GMC K Sierra

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC K Sierra - 4WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L80-E 🢒 Engine Starts in Gear

Checks

Cause

Manual Valve (319)

•	Valve is not engaged to the detent lever.

•	Valve is stuck in the wrong position.

Neutral Safety Switch

The switch is not operating.