ACDelco Park/Neutral Position and Back-Up Lamp Switch

The ACDelco Park/Neutral Position and Back-Up Lamp Switch (also called a neutral safety switch, transmission range switch, or backup light switch) is an electrical switch used with an automatic transmission. It tells the vehicle's electrical system which gear is selected. This lets the engine start only in Park or Neutral, and it turns on the reverse lamps when the transmission is shifted into Reverse.

Key Features:

• Prevents the starter from engaging unless the transmission is in Park or Neutral
• Switches on the back-up (reverse) lamps when Reverse is selected
• Designed to meet ACDelco's quality and performance standards for replacement parts
• Built to hold up to heat, vibration, and the conditions around the transmission
• Helps restore normal starting, gear position signaling, and reverse light operation

Common Signs of a Failing Switch:

• No-start or intermittent starting in Park or Neutral
• Engine starts in a gear other than Park or Neutral
• Back-up lights that do not work
• Incorrect gear indicator display or shifting problems

ACDelco is General Motors' parts brand. It supplies replacement components for a wide range of vehicles. Pick the variant that matches your application from the options listed on this page.