Are you struggling with your 2017 GMC Acadia’s thermostat? A faulty thermostat can cause your engine to overheat or run too cold, leading to poor performance and costly repairs.
The good news is, changing the thermostat yourself is easier than you might think. You’ll get clear, step-by-step instructions to help you replace your thermostat quickly and safely. By the end, you’ll save money and gain confidence in maintaining your vehicle.
Ready to take control of your GMC Acadia’s cooling system? Let’s get started!
Tools And Materials Needed
Changing the thermostat in a 2017 GMC Acadia needs the right tools and materials. Having everything ready makes the job easier and faster.
Prepare your workspace well. A clean, flat area helps you keep track of parts and tools. Safety comes first. Wear gloves and goggles for protection.
Basic Hand Tools
You need a set of wrenches, including a ratchet and socket set. A screwdriver, both flathead and Phillips, is essential. These tools help remove bolts and screws without damage.
Replacement Thermostat And Gasket
Get a thermostat made for the 2017 GMC Acadia model. A new gasket is crucial to prevent leaks. Do not reuse the old gasket as it may cause issues.
Coolant And Drain Pan
Drain the coolant before starting. Use a drain pan to catch the fluid. Have extra coolant ready to refill the system after the job.
Cleaning Supplies
Use a clean rag and some brake cleaner or a similar solvent. Clean surfaces ensure a good seal and prevent dirt from entering the engine.
Optional Tools
A torque wrench helps tighten bolts to the right level. A hose clamp plier can make handling hoses easier. These tools improve the quality of your work.
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Locate The Thermostat
Locating the thermostat in a 2017 GMC Acadia is the first step to changing it. The thermostat controls the engine’s temperature by regulating coolant flow. Knowing its exact place helps you work faster and avoid mistakes.
The thermostat is near the engine, where the upper radiator hose connects. This spot is easy to find under the hood. It looks like a small metal housing with a hose attached to it.
Open The Hood And Secure It
Start by opening the hood of your Acadia. Use the latch inside the vehicle to unlock it. Then lift the hood and use the support rod to keep it open. Safety first.
Find The Upper Radiator Hose
Look for a thick rubber hose at the top of the radiator. This hose carries hot coolant from the engine to the radiator. The thermostat sits where this hose connects to the engine.
Identify The Thermostat Housing
The thermostat is inside a metal casing called the thermostat housing. This part is bolted to the engine. It has the upper radiator hose attached to it. Look for bolts and the hose connection.
Check For Engine Temperature Sensor
Near the thermostat housing, you may see a small sensor. This sensor monitors the engine’s temperature. It is not the thermostat but helps locate the area. Keep it in mind during your search.
Prepare The Vehicle
Changing the thermostat in a 2017 GMC Acadia starts with getting the vehicle ready. Proper preparation saves time and keeps the process safe. It also prevents damage to the engine and cooling system.
Follow these steps carefully before removing the old thermostat. A well-prepared vehicle makes the job easier and cleaner.
Ensure Safety
Park the vehicle on a flat surface. Turn off the engine and remove the key. Let the engine cool completely. Hot engine parts can cause serious burns.
Wear gloves and safety glasses. Keep tools organized and nearby. Avoid loose clothing or jewelry that can get caught.
Drain Coolant
Locate the radiator drain plug under the vehicle. Place a container below to catch the coolant. Open the drain plug slowly to avoid spills.
Drain enough coolant to lower the level below the thermostat housing. This step stops coolant from leaking when you remove the thermostat.
Properly dispose of old coolant. It is toxic and harmful to the environment.
Remove The Old Thermostat
Removing the old thermostat from your 2017 GMC Acadia is a key step in the replacement process. This part controls the engine temperature and must be handled carefully. Following clear steps ensures you do not damage any components.
Start by preparing the area and gathering basic tools. Take your time to avoid mistakes. Below are the steps to safely remove the old thermostat.
Disconnect Hoses
Locate the radiator hoses connected to the thermostat housing. Use pliers to remove the clamps holding the hoses. Gently pull the hoses off the housing. Some coolant may spill, so keep a container nearby.
Unbolt Thermostat Housing
Find the bolts securing the thermostat housing to the engine. Use a wrench or socket set to remove these bolts. Keep the bolts safe for reinstallation. Lift the housing carefully, as it may be stuck due to gasket seal.
Extract Thermostat
Once the housing is removed, the thermostat will be visible. Note its orientation for installing the new one. Pull the old thermostat out gently. Clean the surface area to remove any old gasket material or debris.
Install The New Thermostat
Installing the new thermostat in your 2017 GMC Acadia is a key step. This part controls the engine temperature and keeps it running smoothly. Proper installation ensures your vehicle stays cool and avoids overheating. Follow each step carefully for best results.
Place Thermostat Correctly
Position the thermostat in the housing exactly as the old one was. The spring side should face the engine. This allows the thermostat to open and close properly with temperature changes. Double-check its alignment to avoid leaks or malfunction.
Replace Gasket Or Seal
Remove the old gasket or seal completely. Clean the surface where the gasket sits to remove dirt or old adhesive. Install a new gasket or seal to prevent coolant leaks. Ensure the gasket fits snugly around the thermostat housing.
Reassemble Housing
Carefully place the thermostat housing back over the thermostat. Align the bolt holes and insert the bolts by hand first. Tighten the bolts evenly in a crisscross pattern. Do not overtighten to avoid cracking the housing.
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Refill And Bleed Cooling System
After replacing the thermostat in your 2017 GMC Acadia, refilling and bleeding the cooling system is crucial. This step ensures the engine stays cool and runs smoothly. Air pockets in the system can cause overheating and damage. Properly refilling and removing air bubbles helps maintain the correct temperature and prevents engine issues.
Add Coolant
Start by opening the radiator cap or coolant reservoir. Use the coolant type recommended in your vehicle’s manual. Pour the coolant slowly to avoid spills. Fill until the coolant reaches the full mark. Check for leaks around the radiator and hoses. Tighten the radiator cap securely once filled.
Remove Air Pockets
Air pockets can block coolant flow and cause overheating. To remove air, start the engine and let it run with the heater on high. Watch the coolant level and add more if it drops. Squeeze the radiator hoses gently to help release trapped air. Keep the radiator cap off until bubbles stop appearing. Replace the cap once the system is free of air pockets.
Test The New Thermostat
Testing the new thermostat in your 2017 GMC Acadia is a key step. It ensures the cooling system works correctly. This step prevents future engine problems and keeps your vehicle running smoothly.
Start Engine
Turn on the engine and let it idle. This warms up the cooling system. Listen for unusual noises or vibrations. These might indicate installation issues.
Check Temperature
Watch the temperature gauge closely. It should rise steadily to normal levels. The thermostat opens when the engine reaches a certain temperature. This allows coolant to flow and cool the engine.
Inspect For Leaks
Look under the vehicle for any coolant leaks. Check around the thermostat housing. Tighten bolts if you spot drips or wet areas. Leak-free operation means the thermostat is sealed well.
Tips For Maintenance And Troubleshooting
Maintaining and troubleshooting the thermostat in a 2017 GMC Acadia keeps the engine running smoothly. Proper care helps avoid costly repairs and ensures your vehicle stays reliable. Small checks can prevent big problems later.
Understanding basic tips can save time and money. It also helps you feel confident handling minor issues before they grow.
Regular Coolant Level Checks
Check the coolant level often. Low coolant can cause the thermostat to fail. Use the right type of coolant for your GMC Acadia. Keep the reservoir filled between the minimum and maximum marks.
Inspecting Thermostat Housing
Look for leaks or cracks around the thermostat housing. Damaged housing can cause coolant leaks. Tighten any loose bolts gently to avoid damage. Replace the gasket if you spot any wear or cracks.
Testing Thermostat Function
Monitor engine temperature regularly. If the engine overheats or runs cold, the thermostat might be stuck. Use a thermometer to check coolant temperature. Replace the thermostat if it does not open or close properly.
Flushing The Cooling System
Flush the cooling system every two years or 30,000 miles. Old coolant can cause blockages and damage the thermostat. Follow the manufacturer’s instructions for flushing. Use fresh coolant to keep the system clean.
Recognizing Warning Signs
Watch for signs like fluctuating temperature gauge or poor heater performance. Strange noises or leaks near the thermostat area also signal issues. Early detection helps avoid engine damage and costly repairs.
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Frequently Asked Questions
How Do I Locate The Thermostat In A 2017 Gmc Acadia?
The thermostat is near the engine block, connected to the upper radiator hose. It regulates engine temperature. Check your vehicle manual for exact placement.
What Tools Are Needed To Change The Thermostat?
You’ll need a socket set, screwdrivers, a gasket scraper, and coolant catch pan. Safety gloves and eye protection are also recommended.
How Long Does It Take To Replace The Thermostat?
Changing the thermostat typically takes 1 to 2 hours. Time depends on your skill level and tools available.
Can I Change The Thermostat Without Draining All Coolant?
You can partially drain coolant to avoid a full flush. However, completely draining ensures a cleaner replacement and prevents leaks.
Conclusion
Changing a thermostat in a 2017 GMC Acadia is simple with clear steps. Follow the instructions carefully and take your time. Use the right tools to avoid damage or mistakes. Check your work before finishing to ensure the thermostat works well.
This helps keep your engine cool and running smoothly. Regular maintenance saves money and prevents bigger problems. Trust yourself to do the job safely and correctly. Keep this guide handy for future reference. Your vehicle will thank you with better performance.
