Cooling Systems Repair Shop Kingwood, TX

For expert automotive cooling system repairs in Kingwood, TX, trust the team at Sullivan’s Truck, Auto & Collision. Since 1985, we’ve been helping drivers keep their engines running at the right temperature by repairing and maintaining radiators, fans, heater cores, water pumps, thermostats, and coolant systems. A well-functioning cooling system prevents engine overheating, protects vital components, and ensures peak performance year-round.

Our ASE-certified technicians can handle everything from minor coolant leaks to complete radiator replacements. Whether your car is running hot, your RV is leaking coolant, or a heater in fleet vehicle isn’t working properly, we’ll diagnose the issue quickly and fix it right the first time.

Call 281-359-3598, request your service appointment online, or stop by our Kingwood location today for professional cooling system repairs.

Comprehensive Automotive Cooling System Repair Services

Your vehicle’s cooling system plays a critical role in preventing overheating, maintaining engine performance, and keeping you safe on the road. From radiator repairs to coolant flushes, our technicians provide expert service to ensure every component in your cooling system works as it should.

Explore our Cooling System Repair services below to learn how we keep your car running smoothly year-round.

Automotive Radiator Repair & Replacement in Kingwood, TX - Cooling System Repair

Radiator Repairs & Replacements

The radiator is your vehicle’s primary defense against overheating. Over time, corrosion, debris buildup, and damage can cause leaks or reduced efficiency. We offer complete radiator flushes, leak repairs, and radiator replacements to restore your cooling system’s performance.

Expert Tip: Check your coolant regularly. If it looks rusty or contaminated, it’s time for a flush to prevent clogging and internal damage. Learn more about preventative care on our Automotive Cooling System Service & Maintenance page.

Water Pump & Thermostat Repairs in Kingwood, TX - Cooling System Repairs

Water Pump & Thermostat Service

The water pump circulates coolant through your engine, while the thermostat regulates its temperature. A failing water pump can lead to overheating, and a stuck thermostat can prevent proper coolant flow. We inspect and replace both as needed to keep your engine protected.

Expert Tip: If you hear a high-pitched squeal from the front of your engine or notice coolant pooling under your vehicle, have your water pump inspected immediately to avoid severe engine damage.

Cooling Fans & Heater Core Repairs

Electric and mechanical fans help regulate engine temperature, especially during low-speed driving or idling. The heater core, which uses engine heat to warm your cabin, is also a vital part of the system. A clogged or leaking heater core can cause fogged windows, coolant odors, and poor heating.

Expert Tip: A sweet smell inside your vehicle or unexplained moisture on your windshield can indicate a heater core leak — address it quickly before it worsens. You can find related advice on our Automotive AC Repair page.

Automotive Coolant Flush & Coolant Leak Repair in Kingwood, TX - Cooling System Repairs

Coolant Flushes & Leak Repairs

Coolant loses its protective properties over time, leading to rust, scale, and eventual component failure. Our coolant flush service removes old fluid, cleans the system, and replaces it with fresh coolant to restore protection. We also pinpoint and repair leaks from hoses, clamps, and seals.

Expert Tip: Never top off with water unless it’s an emergency — doing so dilutes the coolant mixture and reduces its ability to protect against rust and freezing.

Excellent

Sullivan's Truck, Auto & Collision Repair4.6

Based on 274 reviews

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Nicholas Stander

4 hours ago

This is the place to go when you are looking for knowledgeable people at fair prices. They do all of our auto maintenance, oil changes, tires, etc.

Response from the owner:Thank you for your loyalty! Our Team takes great pride in providing superior service to our customers and top notch quality repairs to get you and your family back on the road safely. Happy Motoring!

Florentino Vuelvas

3 days ago

Joe and the folks at Sullivan’s Truck and Auto consistently provide excellent service, considerate of the customer. I am grateful.

Candice Prince

3 days ago

I would definitely recommend Sullivan‘s for collision repair. They have great customer service and are good at timely communication. They work well coordinating with the insurance company and give a guarantee to their work. Thanks Andrew for all help! (He even helped me move my car seats from one vehicle to another)

Response from the owner:Hi Candice-- We are so happy that you were pleased with the repair of your vehicle. We know how stressful and frustrating it can be at times and are happy to hear that Andrew made it as easy and seamless as possible for you. Thank you for choosing Team Sully and we are always here for when you need us!

Pat Maher

5 days ago

We wouldn’t go anywhere else, recommend them highly

Response from the owner:Hey Pat! Thank you so much for your kind words. It means a lot to us that you trust us with your vehicle and to get you back safely on the roads. We appreciate you.

Karen Inroligator

5 days ago

I had excellent service from the time I called to schedule to the moment I drove away. Joe, the service advisor was 100% professional, knowledgeable and friendly. Highly recommend this business for automotive needs!

Response from the owner:Hey Karen! We appreciate you too!! Thank you for choosing Sullivan's- we will always be here for ya when you need us! 🙂

Jacob Rivers

5 days ago

After a minor incident, our Cadillac Escalade needed an alignment. We took it to a body shop first. When we picked it up, it was driving terribly and felt almost uncontrollable. They realigned it, same issue.

Next stop was Cadillac. We explained everything to the service manager, they aligned it again and told us it was back in spec. I picked it up… and it still drove awful.

I bumped into Michael Sullivan and we talked about what was going on. So we brought it to Sullivan’s Truck, Auto & Collision Repair.

From start to finish, the experience was completely different. Great customer service. Clear communication. They test drove the vehicle themselves and confirmed what we were feeling. When we picked it up, they walked through the alignment printout with us in detail — something no one else had done.

The Escalade now drives exactly like it should. They even had it cleaned and ready to go.

Can’t say enough good things about the team at Sullivan’s. Professional, honest, and they actually fix the problem. Highly recommend.

Response from the owner:Hey Jacob --This means a lot to us and our team, thank you for your kind words! We know how frustrating it is to be told everything is “fine” when your vehicle clearly doesn’t feel fine. We’re so happy we could test drive it to feel what you were feeling and walk you through everything, so you felt confident getting back on the road safely. If you ever need anything at all, we’re here for ya!

Austin Sullivan

7 days ago

Pat was amazing!! Very helpful with the whole process and communicated almost daily with me about when it will be done and what work was being done! Over 10/10

Response from the owner:Hey Austin!! Thanks so much for speaking so highly of our Team. It means the world to us that you trust us with your vehicle when you need us the most. Thanks for choosing Sullivan's!

Glen Corder

2 weeks ago

Our first visit to Sullivans was today and we enjoyed the experience!
Thx Nik Helms

Response from the owner:Mr. Corder- thank you for your kind words and for leaving us a 5 star review! We are so happy to hear that Nik exceeded your expectations. Thank you for choosing Sullivan’s!

Mike Ward

2 weeks ago

Unfortunately, I was in an accident and my car was towed to Sullivan’s. I’ve lived in Kingwood for over fifteen years and have driven past their shop hundreds of times. It always looked busy, and I remember thinking, they must be doing something right.

From the moment I walked into the lobby, I was greeted with genuine smiles. The person I had the pleasure of working with was Pat. He was respectful of my time, listened carefully to my questions and concerns, and went the extra mile to make sure everything was handled correctly.

Even though my car was totaled, Pat was a perfect example of excellence and professionalism. If you ever need to take your vehicle to Sullivan’s Auto Body Shop, you’ll be in great hands with Pat and the rest of the team.

Joel Pousson

2 weeks ago

Wow! Had some minor work I needed done so I went to Sullivan's.. I had gotten a part online so I wasn't sure of my reception... William Scott could not have been more accommodating and helpful and than didn't even charge for the work done!! Will definitely return for maintenance and repairs on my two vehicles in the future!!

Why Choose Sullivan’s for Cooling System Repairs

With over 40 years of experience, Sullivan’s Truck, Auto & Collision has built a reputation for precision cooling system diagnostics and repairs. Customers trust us because we offer:

ASE-certified expertise on all cooling system components
Advanced diagnostic equipment for accurate problem-solving
Honest recommendations and clear communication
High-quality parts for long-lasting repairs
Convenient full-service automotive care in one location

Schedule Your Cooling System Repair in Kingwood, TX

Don’t risk engine damage from overheating — let Sullivan’s handle your cooling system repairs quickly and correctly.

Call 281-359-3598, request your appointment online, or stop by our shop for radiator, fan, heater core, water pump, thermostat, and coolant system service.

Cooling System Repairs FAQs

What are signs of a failing cooling system?

Overheating, coolant leaks, steam from under the hood, and poor heater performance.

How often should I flush my coolant?

Typically every 30,000 miles or as recommended by your manufacturer.

Can I drive with a coolant leak?

It’s risky — low coolant levels can cause overheating and engine damage.

Do you repair both electric and mechanical cooling fans?

Yes, we service all fan types.

What type of coolant should I use?

Refer to your owner’s manual or let us match the correct type for your vehicle.