As a result of no heat in the heater circuit, defrost performance is compromised.

Engine And Engine Cooling — Cooling System

Summary

Vehicle description: Pickup trucks equipped with 2.5L ohc engines. Engine coolant circulation through the heater circuit is prevented because of a plugged heater return tube (water pump inlet tube) at the water pump. These vehicles do not comply with the intent of FMVSS no. 103, "windshield defrosting and defogging systems."

Actions

Dealers will replace the plugged heater water return tubes.

Documents (4)

• Fax Acknowledgement
• Letter Acknowledgement
• Quarterly Performance Report
• Defect and Noncompliance Notice(Part 573)

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