Ram 4500 HVAC Blower Motor Replacement Guide for 2011-2019 Models
Everything a Ram 4500 owner needs to know before replacing their HVAC blower motor.
- If the fan only works on the highest speed, the blower motor resistor is the likely culprit, not the motor itself.
- Before ordering, verify if your truck has manual or automatic climate controls, as models from 2014-2019 may use different motors.
- Replacement is very DIY-friendly, located under the passenger dash and requiring only basic tools and about 30 minutes.
- Always inspect the electrical connector for melting or corrosion, as a bad connection can damage a new motor.
Is Your Ram 4500's Blower Motor Failing?
When the blower motor in your Ram truck starts to fail, the signs are usually obvious. Because this part is essential for both heating and defrosting, a failure can be more than just an inconvenience, especially in extreme weather. Here are the most common symptoms you'll experience.
Common Failure Symptoms:
- No Air From Vents: The most definite sign of failure. You adjust the fan speed, but nothing comes out of the vents. This can be the motor, but could also be a fuse or wiring issue.
- Weak Airflow: If the fan feels weak even on its highest setting, the motor is likely worn out and losing its ability to spin at full speed.
- Noise From the Vents: Squealing, grinding, or a rhythmic ticking noise that changes with fan speed points to worn-out motor bearings or debris stuck in the fan cage. 🎬 See what causes common blower motor vibrations and noises.
- Intermittent Operation: The fan cuts on and off randomly. This can be a sign of a failing motor, a loose electrical connection, or a problem with the truck's power control module (TIPM).
- Burning Smell: A burning plastic or electrical smell from the vents is a serious symptom. It indicates the motor is overheating and could be a fire risk. Pull over and stop using the fan if this occurs.
Blower Only Works on High Speed? Check the Resistor First!
A very common issue on Ram trucks is the fan only working on the highest setting. This is almost always caused by a failed blower motor resistor, not the blower motor itself. The resistor controls the fan speed, and when it fails, it defaults to the high setting which bypasses the resistor. This is a separate, cheaper part that should be diagnosed before you buy a new motor.
🎬 Watch: How to replace both the blower motor and resistor.Known Issues for 2011-2019 Ram 4500
For the 2019 model year specifically, Ram issued Technical Service Bulletin (TSB) 24-001-22. This TSB addresses an issue where the blower motor may shut down if the fan speed is on high with the defrost on, particularly while a snow plow is in use. The motor may cycle on and off until the ignition is turned off and on again. While no widespread recalls exist for the blower motor itself in this year range, many owners report that electrical issues, like melted connectors or a faulty TIPM, can mimic the symptoms of a bad blower motor.
Choosing the Right Aftermarket Blower Motor
When shopping for a replacement, you'll face a choice between OEM Mopar and various aftermarket brands. Aftermarket parts offer significant cost savings, but quality can be inconsistent.
Important: Manual vs. Automatic Climate Control
Starting in 2014, Ram used different blower motors depending on the type of climate control system. Trucks with manual controls (knobs you turn) use a blower motor that requires a separate blower motor resistor. Trucks with automatic temperature control (where you set a specific temperature) use a different motor with a built-in electronic controller and do not use a resistor. You must order the correct part for your system.
Brand Quality: Four Seasons vs. Global Parts (GPD)
- Four Seasons: Owned by Standard Motor Products, Four Seasons is a widely available aftermarket brand. Owner reviews are mixed. Some find them to be a quiet, reliable, and cost-effective alternative to OEM. However, other owners have reported issues with whistling or humming noises and reduced airflow compared to the factory part.
- Global Parts (GPD): While there are fewer direct owner reviews for GPD blower motors, the brand is known for providing clear technical details to ensure correct part fitment. Their distinction between motors for manual and automatic climate control systems is crucial for getting the right part the first time.
- OEM Mopar: The original factory part offers guaranteed fitment, performance, and quiet operation. While it is the most expensive option, many owners recommend it to avoid potential noise issues or the need to do the job a second time.
Cost of Replacing a Ram 4500 Blower Motor
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket | $68 - $248 |
| New OEM (Mopar) | $195 - $291 |
| Shop Labor | $75 - $150 |
Frequently Asked Questions (FAQ)
How difficult is it to replace the blower motor on a Ram 4500?
It is a very easy job. The blower motor is held in by three T25 Torx or 8mm screws and is located under the passenger side dashboard. Most DIYers can complete the replacement in 15-30 minutes.
🎬 Watch this quick walkthrough of the removal and installation process.Can I drive my truck with a bad blower motor?
Yes, but with caution. A failed blower motor does not affect the engine's operation, but you will not have air conditioning, heating, or windshield defrosting capabilities. Driving without a functioning defroster can be unsafe in cold or humid weather.
Does my 2011-2019 Ram 4500 have a cabin air filter?
It depends. On many 4th generation Ram trucks, the cabin air filter was an optional feature. You may find that there is a solid plastic cover where the filter door should be. If so, your truck was not equipped with one from the factory.
Why did my new aftermarket blower motor fail so quickly?
If a replacement motor fails soon after installation, it could be a quality control issue with the part itself. However, it's also possible that an underlying electrical problem, such as a failing resistor or a bad wiring harness connector that is drawing too much power, caused the new motor to burn out. Always inspect the connector for signs of melting or corrosion when replacing the motor.
Helpful Videos
Technical Specifications
OEM Part Numbers: 68048903AB 68048903AA
Located under the passenger side dashboard. Typically secured with three T25 Torx or 8mm screws. Features a 2-pin or 3-pin electrical connector depending on the climate control system.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Ram 4500:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Ram 4500's Blower Motor Failing?
- Common Failure Symptoms:
- Blower Only Works on High Speed? Check the Resistor First!
- Known Issues for 2011-2019 Ram 4500
- Choosing the Right Aftermarket Blower Motor
- Important: Manual vs. Automatic Climate Control
- Brand Quality: Four Seasons vs. Global Parts (GPD)
- Cost of Replacing a Ram 4500 Blower Motor
- Frequently Asked Questions (FAQ)
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