Prevent Transmission Overheating and Damage

Cost Savings

Checklist Tasks

• Inspect cooler lines for leaks or kinks to ensure proper fluid flow.
• Check fluid color and odor on white paper to spot signs of overheating.
• Clean radiator and transmission cooler fins to improve heat dissipation.
• Test fluid level at full temperature on level ground for accuracy.
• Scan for hidden transmission codes with an OBD-II tool.
• Replace fluid filter if present to prevent overheating from partial clogs.
• Verify cooling fan activates at proper temperature using a scan tool.
• Inspect underbody shields for blockage or damage inhibiting airflow.
• Check for oversized tires or mods that add load and increase heat.
• Confirm thermostat opens fully by observing fluid temperature during warm-up.
• Test torque converter lockup at highway speed for proper function.
• Review towing and load limits to avoid exceeding cooling capacity.