If your Dodge Ram has no heat or AC, the most common fix is replacing the HVAC blend doors or actuator system. HVAC repair kits designed for Dodge Ram trucks restore airflow and temperature control issues permanently.

Common symptoms include clicking noises behind the dashboard, air stuck hot or cold, no temperature change, and incorrect airflow direction.

Common causes include failed blend doors, a bad actuator, a faulty evaporator core, low refrigerant, or a failing compressor.

The most common failures include blend doors, blend door actuators, heater cores, evaporators, and complete AC systems.

If your engine reaches operating temperature but the cabin stays cold, the most likely culprits are a broken blend door stuck in the cold position, a clogged heater core, or a failed blend door actuator that isn't moving the door to the heat position. A complete HVAC repair kit for your Ram generation is typically the most reliable fix.

A repetitive clicking or ticking noise from behind the dash on a Dodge Ram is almost always a failing blend door actuator. The plastic gear inside the actuator strips or cracks, causing it to click as it tries to move the blend door. Replacing the actuator — or better yet, installing a complete HVAC repair kit with upgraded blend doors — eliminates the noise permanently.

Uneven temperature between driver and passenger sides on a dual-zone Dodge Ram is typically caused by a failed zone-specific blend door or actuator. Dual-zone HVAC systems have separate blend doors for each side — if one fails, only that side loses temperature control. A dual-zone HVAC repair kit replaces both doors and restores independent climate control.

Yes. A leaking or clogged evaporator core is a common cause of weak or no AC cooling in Dodge Ram trucks. Signs include a musty smell from the vents, refrigerant loss without visible leaks, and reduced airflow. Replacing the evaporator core restores full cooling capacity and eliminates refrigerant leaks at the source.

Fitment depends on your truck generation: 1994–2002 (2nd Gen), 2002–2009 (3rd Gen), 2009–2019 (4th Gen), and 2019–2025+ (5th Gen). Each product listing includes a full fitment guide. If you're unsure, contact us with your year, make, model, and VIN.

The most reliable solution is installing a complete HVAC repair kit. These kits replace internal blend doors and restore proper airflow without repeated actuator failure.

It depends on the issue. Airflow problems usually require an HVAC repair kit, weak cooling may require an evaporator, and full system failure may require a complete AC kit.

Yes, many HVAC and AC parts are designed for 5.9L and 6.7L Cummins diesel Dodge Ram trucks.

Single-zone HVAC systems have one temperature control for the entire cab, while dual-zone systems allow the driver and passenger to set independent temperatures. Make sure to match your kit to your truck's configuration — installing a single-zone kit on a dual-zone truck will not restore full climate control. Check your dash controls or vehicle build sheet to confirm which system your Ram has.

OEM replacement blend doors are made from the same plastic as the original parts and are prone to the same failure over time. Aftermarket HVAC repair kits use upgraded materials designed to outlast the factory parts. If you've already replaced your blend door once and it failed again, an upgraded repair kit is the more permanent solution.

68004231AB is the OEM Dodge Ram A/C and Heater Box Seal Kit used on 4th Gen Ram trucks (2009–2019). It seals the HVAC box to prevent air leaks that cause temperature inconsistency and reduced heating or cooling efficiency. It is commonly replaced during evaporator core or blend door repairs.

Many HVAC components — including blend doors, actuators, evaporator cores, and repair kits — are shared across Ram 1500, 2500, and 3500 trucks within the same generation. However, fitment can vary by cab style, trim level, and HVAC configuration. Always verify fitment using your specific year, model, and VIN before ordering.

Yes, many HVAC repairs can be completed with basic tools. Many repair kits are designed for DIY installation. If you'd prefer professional help, inquire about our installer network.

Many factory repairs require full dash removal, but certain HVAC repair kits are designed to avoid complete dashboard removal, saving time and labor.

Actuator replacement time varies by location. Some actuators on Dodge Ram trucks are accessible in under an hour with basic hand tools, while others behind the dash may take 2–4 hours. HVAC repair kits that avoid full dash removal can significantly reduce labor time compared to a dealership repair.

Most Dodge Ram HVAC blend door repairs require basic hand tools: a socket set (metric and standard), screwdrivers, trim panel removal tools, and a flashlight. Some repairs may also require a torque bit set for dash fasteners.

Yes. Replacing the evaporator core requires evacuating the refrigerant before removal and recharging the system after installation. This step requires an AC recovery and recharge machine. If you're doing a DIY repair, plan to have the system professionally evacuated and recharged, or rent the equipment from an auto parts store.

Yes, but it depends on the condition of the blend door. If the plastic blend door itself is cracked or broken — which is common on high-mileage Dodge Rams — replacing only the actuator will not fix the problem. The actuator will fail again quickly if it's driving a damaged door. A complete HVAC repair kit replaces both the door and the actuator for a lasting repair.

Most in-stock orders ship within 1–2 business days from our US warehouse. Standard delivery typically takes 3–5 business days depending on your location. Expedited shipping options are available at checkout.

Yes, we ship to all 50 US states including Alaska and Hawaii. Shipping rates and delivery times may vary for remote locations.

We want you to be completely satisfied with your purchase. If you receive an incorrect or defective part, contact us and we'll make it right. Please review our full return policy for eligibility details before returning any item.

Inventory levels are displayed on each product page. If a part shows as available, it is in stock and ready to ship. If you need a part that is out of stock, contact us and we can advise on restock timelines or alternative options.

Currently, Ram Parts USA fulfills orders via shipping only. We do not offer local pickup at this time. All orders are shipped directly to your address from our US warehouse.