The 2017 Jeep Grand Cherokee’s transmission problems often trace back to overheating and software glitches. If you own this SUV, you might have noticed rough shifting or hesitation. These issues are common but can be fixed with the right approach. Let’s break down what you need to know about Jeep Grand Cherokee transmission problems 2017.
Jeep Grand Cherokee Transmission Problems 2017
The 2017 model year brought a mix of power and luxury, but its transmission has been a weak point. Many owners report jerky movements or delayed engagement. Understanding the root causes helps you act fast.
Common Symptoms Of Transmission Failure
You might feel a hard shift between gears, especially from first to second. Some drivers notice a whining noise when accelerating. Others see the check engine light pop on with error codes like P0700 or P0730.
- Rough or erratic shifting
- Transmission slipping under load
- Delayed engagement when shifting from Park to Drive
- Burning smell from the transmission fluid
- Transmission overheating warning on the dash
Why The 2017 Grand Cherokee Transmission Overheats
Overheating is a primary cause of transmission failure in this model. The 8-speed automatic transmission uses a thermal bypass valve that can stick. When it sticks closed, fluid doesn’t flow through the cooler properly.
Driving in stop-and-go traffic or towing heavy loads makes things worse. The transmission temperature spikes, breaking down the fluid’s lubricating properties. This leads to worn clutches and valve body issues.
Software Glitches And Shift Quality
Jeep released several TSBs (Technical Service Bulletins) for transmission software updates. The original calibration caused harsh downshifts or delayed upshifts. A simple reflash at the dealership often improves shift quality.
Some owners report the transmission hunting for gears on hills. This is usually a software issue, not a mechanical failure. Updating the TCM (Transmission Control Module) firmware can resolve it.
Common Transmission Failure Points In The 2017 Model
Several components tend to fail prematurely in this transmission. The valve body is a frequent culprit, especially the solenoids that control fluid pressure. Worn torque converters also cause shuddering at highway speeds.
- Valve Body: Sticking solenoids lead to harsh shifts or no shift at all.
- Torque Converter: Lock-up clutch failure causes vibration and shudder.
- Transmission Pump: Low fluid pressure from a worn pump affects all gears.
- Clutch Packs: Overheated clutches slip and burn, requiring a rebuild.
- Seals And Gaskets: Leaks develop at the pan or output shaft seal.
How To Diagnose Transmission Problems Early
Don’t wait for a complete failure. Start by checking the transmission fluid level and condition. The fluid should be bright red and smell sweet. If it’s dark or smells burnt, change it immediately.
Use an OBD-II scanner to read transmission codes. Common codes include P0731 (incorrect gear ratio) and P0740 (torque converter clutch circuit). These point to specific internal issues.
Listen for unusual noises. A whining sound that changes with speed often indicates a failing pump. Clunking when shifting into Reverse suggests worn mounts or a failing valve body.
Step-By-Step Fixes For Common Transmission Issues
Here are practical steps you can take to address transmission problems in your 2017 Grand Cherokee.
1. Perform A Transmission Fluid Change
Use only Mopar ATF+4 fluid or a compatible synthetic. Drain the old fluid from the pan, replace the filter, and refill. This helps if the fluid is old or contaminated.
For severe overheating, consider a complete flush. But be careful—flushing can dislodge debris and cause further damage if the transmission is already worn.
2. Update The Transmission Software
Visit a Jeep dealer or a qualified shop to have the TCM updated. This often fixes shift quality issues without any mechanical work. The update reprograms shift points and pressure settings.
You can check for TSBs online using your VIN. Jeep released TSB 21-003-18 for transmission shudder and TSB 21-004-18 for harsh shifts.
3. Replace The Thermal Bypass Valve
If your transmission overheats frequently, replace the bypass valve with an updated part. The new valve stays open longer, allowing more fluid to pass through the cooler. This reduces operating temperature by 20-30 degrees.
This is a simple DIY job if you’re handy. The valve is located on the transmission cooler line. Cost is around $50 for the part.
4. Inspect And Replace The Valve Body
If you have persistent shift issues, the valve body may need replacement. This is a more involved repair. You can buy a remanufactured valve body for about $400 and install it yourself with basic tools.
Make sure to recalibrate the transmission after installation. Some shops can do this with a scan tool. Otherwise, the transmission may not shift correctly.
Preventative Maintenance Tips
Preventing transmission problems is easier than fixing them. Follow these tips to extend the life of your Grand Cherokee’s transmission.
- Change transmission fluid every 30,000 miles if you tow or drive in harsh conditions.
- Install an aftermarket transmission cooler if you frequently haul heavy loads.
- Avoid aggressive driving from a cold start. Let the transmission warm up before hard acceleration.
- Check for leaks regularly. A small drip can become a big problem if ignored.
- Use the correct towing capacity. The 2017 Grand Cherokee can tow up to 7,200 pounds, but exceeding this strains the transmission.
Cost Of Repairs For Transmission Problems
Repair costs vary widely depending on the issue. A simple software update costs around $100 at a dealership. A fluid change runs $200 to $300. Valve body replacement is $800 to $1,200 including labor.
If the transmission needs a full rebuild, expect to pay $3,000 to $5,000. A replacement transmission from a salvage yard costs $1,500 to $2,500, plus installation. Extended warranties may cover some of these costs.
Is The 2017 Grand Cherokee Transmission Reliable Long-Term?
With proper maintenance, the 8-speed automatic can last 150,000 miles or more. But neglect accelerates failure. Many owners report issues around 60,000 to 80,000 miles, especially if they tow frequently.
The 2017 model has a mixed reliability record. Some owners have no problems at all. Others face repeated repairs. The key is staying proactive with fluid changes and software updates.
Frequently Asked Questions
Q: What is the most common transmission problem in the 2017 Jeep Grand Cherokee?
A: The most common issue is rough shifting due to software glitches or overheating. Many owners report hard shifts between first and second gear.
Q: Can I drive my Grand Cherokee with transmission problems?
A: It’s not recommended. Driving with slipping or overheating can cause permanent damage. Have it inspected as soon as possible to avoid costly repairs.
Q: How much does it cost to fix transmission problems on a 2017 Grand Cherokee?
A: Costs range from $100 for a software update to $5,000 for a full rebuild. The average repair for valve body issues is around $1,000.
Q: Does the 2017 Grand Cherokee have a recall for transmission issues?
A: There is no major recall specifically for the transmission. However, there are TSBs for software updates and valve body replacements. Check with your dealer for your VIN.
Q: How often should I change the transmission fluid in my 2017 Grand Cherokee?
A: Jeep recommends every 60,000 miles for normal driving. If you tow or drive in stop-and-go traffic, change it every 30,000 miles for best protection.
Final Thoughts On The 2017 Grand Cherokee Transmission
The 2017 Jeep Grand Cherokee offers great performance and comfort, but its transmission needs attention. Overheating and software issues are the main culprits behind failures. By staying on top of maintenance and addressing problems early, you can keep your SUV running smoothly for years.
If you’re experiencing symptoms like rough shifts or overheating, don’t ignore them. Start with a fluid check and software update. If the problem persists, have a professional inspect the valve body and torque converter. With the right care, your Grand Cherokee’s transmission can be reliable.
Remember, the key is acting fast. Small issues become big bills if left unchecked. Keep an eye on your transmission temperature and shift quality. Your 2017 Grand Cherokee will thank you with many more miles of dependable driving.