1987-1992 Third Gen Camaro Firebird Heater Control Valve Replacement. 3rd Generation Chevy Pontiac.

Introduction

This tutorial will guide you through the process of replacing the heater control valve in a 1987-1992 Chevrolet Camaro or Pontiac Firebird with air conditioning. The heater control valve is a critical component that regulates the flow of coolant to the heater core, and replacing it can help prevent leaks and maintain proper heating functionality in your vehicle.

Step 1: Gather Necessary Tools and Materials

Before starting the replacement, make sure you have the following tools and materials on hand:

• Flathead screwdriver
• Funnel
• Hose (to drain coolant)
• Oil pan or container
• Replacement heater control valve (AC Delco recommended)
• Socket set (optional for hose clamps)

Step 2: Prepare for the Replacement

1. Locate the Heater Control Valve: Identify the heater control valve in your vehicle, which is typically located near the firewall.
2. Identify Hoses and Vacuum Line: The control valve will have three hoses connected to it:
   • The top hose connects to the throttle body.
   • The bottom hose connects to the heater core.
   • The third hose connects to the radiator.
   • There is also a vacuum line that runs back into the car's interior.

Step 3: Drain Coolant

1. Setup for Draining: Insert a funnel into the oil pan and run a hose into it to direct the coolant.
2. Drain the Top Hose: Start with the top hose, loosening the hose clamp using a flathead screwdriver.
3. Remove the Hose: Carefully pull the hose off while allowing the coolant to drain into the funnel and oil pan.

Step 4: Disconnect Hoses

1. Loosen and Remove the Bottom Hose: Repeat the process for the bottom hose. If the hose is stuck, gently pry it off using a screwdriver, but be cautious not to damage the hose or valve.
2. Remove the Vacuum Line: Pull off the vacuum line, which should come off easily.

Step 5: Install the New Heater Control Valve

1. Position the New Valve: Take the new heater control valve and position it correctly with the top and bottom hoses in mind.
2. Reconnect Hoses:
   • Attach the top hose to the throttle body connector.
   • Connect the bottom hose to the heater core.
   • Ensure all hoses are fitted tightly.
3. Reattach the Vacuum Line: Plug the vacuum line back into its designated spot.

Step 6: Secure Hose Clamps

1. Tighten Hose Clamps: Use your flathead screwdriver to tighten the hose clamps securely. Position the clamps where they can be easily accessed for future adjustments.
2. Check for Leaks: Once everything is connected, visually inspect to ensure there are no leaks around the hoses and valve.

Step 7: Replace Lost Coolant

1. Refill Coolant: If you lost any coolant during the process, refill the reservoir to the appropriate level.
2. Monitor Levels: After starting the vehicle, keep an eye on the coolant levels and check for any leaks around the new valve.

Conclusion

Replacing the heater control valve in your Camaro or Firebird is a straightforward task that can help prevent leaks and ensure proper heating functionality. Remember to keep an eye on the new valve for any potential issues. For future maintenance, consider referring back to the vehicle's manual or consulting a professional if needed. Happy driving!