2020-2024 Ram 4500 HVAC Blower Motor Replacement and Troubleshooting
Is your Ram 4500's heat or A/C fan dead? Here's what you need to know before you replace the blower motor.
- Replacement is very easy and can be done by a DIYer in under an hour with basic tools.
- Before buying parts, check the blower motor fuse for signs of a loose connection or overheating, as this is a known Ram issue.
- If you use a snow plow, be aware of TSB 24-001-22, which causes the blower to shut down and requires a dealer software update to fix.
- Aftermarket brands like Four Seasons and Global Parts are a cost-effective option, but the OEM Mopar part is less likely to have noise issues.
Is Your Ram 4500's Blower Motor Failing?
When an HVAC blower motor starts to fail, the signs are usually obvious. Because this part is responsible for all airflow in your cabin, any problems will be hard to ignore. Pay attention to these common symptoms.
- No Air From Vents: The most common symptom is a complete lack of airflow from any vent, even when you can hear the A/C compressor or heater working.
- Weak Airflow: If the fan feels weak even on the highest setting, the motor may be worn out and unable to reach its full speed.
- Squealing, Grinding, or Rattling Noises: Loud noises from the passenger footwell that change with fan speed are a classic sign of a failing motor bearing or debris in the fan cage.
- Fan Only Works on High: This often points to a failed blower motor resistor, not the motor itself. However, a failing motor drawing too much electricity can cause the resistor to burn out, so they are often replaced together.
- Burning Smell: A smell of burning plastic or electronics from the vents is a serious sign the motor is overheating. Stop using your HVAC system immediately if you notice this.
Pro Tip: Check This Before You Buy
Some Ram trucks can develop a poor connection or burnt pin in the main fuse box (also called the TIPM) that powers the blower motor. This can make it seem like the blower motor is dead. Before replacing parts, check the blower motor fuse for signs of overheating or a loose connection. A simple wiggle of the fuse might temporarily restore power, indicating a problem with the fuse box 🎬 See how to fix a blower fan that won't turn on. itself, not the motor.
Known Issues for 2020-2024 Ram 4500
While there are no major recalls for the blower motor itself, there is a specific Technical Service Bulletin (TSB) that affects these work trucks.
TSB 24-001-22: Blower Motor Shuts Down with Snow Plow
This bulletin applies to 2019-2021 Ram 4500/5500 models. Owners may find the blower motor shuts off when the fan is on high, defrost is on, and a snow plow is being used. The motor may cycle on and off a few times before stopping completely until the truck is restarted. This is a software issue, not a failed motor. A Ram dealership can perform a software update to fix this problem.
Choosing a Replacement Blower Motor: OEM vs. Aftermarket
For your Ram 4500, you have a choice between original Mopar parts and aftermarket brands like Four Seasons or Global Parts. The replacement job is easy, so the decision mostly comes down to cost versus potential quality differences.
OEM Mopar
This is the same part your truck was built with. It guarantees perfect fitment and is expected to have the same performance and lifespan as the original. The main drawback is cost, as it is the most expensive option.
Aftermarket Brands (Four Seasons, Global Parts)
These brands offer a direct-fit replacement at a much lower cost. For a simple part like a blower motor, an aftermarket unit is a reasonable choice, especially given the high price of the OEM part. However, be aware of the trade-offs. Some users in forums report that budget-friendly blower motors can be noisier (producing a whine or hum) than the original Mopar part. While brands like Four Seasons are established, they are generally considered a standard-tier replacement, not a premium one.
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket (Four Seasons, Global Parts) | $244.61 - $247.37 |
| New OEM (Mopar) | $290.00 - $450.00 |
| Shop Labor | $100.00 - $200.00 |
Frequently Asked Questions
Can I replace the Ram 4500 blower motor myself?
Yes, absolutely. This is a very easy DIY job for most owners. The blower motor is located under the passenger side dashboard and held in by just three screws. It can 🎬 Watch: This step-by-step guide shows how to replace the motor. typically be replaced in under an hour with basic hand tools like a ratchet and an 8mm socket or a T25 Torx driver.
Where is the blower motor located on a 2020-2024 Ram 4500?
You can find the blower motor in the passenger footwell, underneath the dashboard. You will need to remove a small plastic or carpeted cover to access it.
Is there a recall on the HVAC system for these trucks?
No, there are no recalls for the HVAC blower motor on the 2020-2024 Ram 4500. There was a TSB for a very small number of 2020 models related to the main HVAC control module failing, but it is not a widespread issue. There are other unrelated recalls for these trucks, but none affect the blower motor.
Should I also replace the blower motor resistor?
If your only symptom is that the fan works on the highest speed but not on lower speeds, the resistor is the likely culprit. However, since a failing motor can damage the resistor, it is common practice to replace both at the same time to prevent a repeat failure.
🎬 Watch: How to replace a blower motor resistor on a Ram.Helpful Videos
Technical Specifications
OEM Part Numbers: 68048903AB 68048905AB 68396057AA 68214892AD
Located in the passenger side footwell area, under the dashboard. Typically secured with three 8mm or T25 Torx screws.
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?
- Pro Tip: Check This Before You Buy
- Known Issues for 2020-2024 Ram 4500
- TSB 24-001-22: Blower Motor Shuts Down with Snow Plow
- Choosing a Replacement Blower Motor: OEM vs. Aftermarket
- OEM Mopar
- Aftermarket Brands (Four Seasons, Global Parts)
- Frequently Asked Questions
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