If you own a 2020 Jeep Grand Cherokee, keeping your vehicle in top shape is important. One of the most overlooked parts of car care is the transmission fluid change. Many drivers ignore this until there is a problem, but doing it on time can help you avoid expensive repairs. This guide covers everything you need to know about changing the transmission fluid in your 2020 Jeep Grand Cherokee—why it matters, how to do it, and tips to make the process easier.
Why Transmission Fluid Matters
Your transmission fluid does more than just lubricate. It cools, cleans, and helps the gears shift smoothly. Over time, this fluid gets dirty and loses its effectiveness. If you ignore it, you may experience slow shifting, odd noises, or even complete transmission failure.
- Transmission repairs can easily cost over $3,000.
- Changing the fluid regularly can add years to your Jeep’s life.
Many drivers don’t realize that off-road driving, towing, and city traffic make the fluid wear out faster.
When To Change The Transmission Fluid
For the 2020 Grand Cherokee, Jeep recommends changing the transmission fluid every 60,000 miles under normal use. If you drive in tough conditions—like towing or heavy traffic—change it every 30,000 miles.
Signs you need a change:
- Delayed or rough shifting
- Fluid looks dark or smells burnt
- Grinding or whining noises
Always check your owner’s manual for exact intervals.
What You Need For A Fluid Change
Before you start, gather the right tools and parts. The 2020 Jeep Grand Cherokee uses a 8-speed automatic transmission (8HP70 or 850RE), each with its own fluid type.
You will need:
- Transmission fluid (usually Mopar 8&9 Speed ATF or equivalent)
- New transmission filter (if required)
- Gasket or RTV sealant
- Socket set and ratchet
- Drain pan
- Funnel
- Torque wrench
- Clean rags and gloves
The transmission typically requires about 8.5 quarts of fluid for a full change, but you may only need 5-6 quarts for a drain-and-fill.
Step-by-step: Changing The Transmission Fluid
Changing transmission fluid can sound complicated, but with patience, you can do it at home. Here’s how:
1. Warm Up The Engine
Drive your Jeep for 10-15 minutes. Warm fluid drains better and removes more contaminants.
2. Lift The Vehicle
Use a jack and jack stands for safety. Never work under a car supported only by a jack.
3. Locate The Transmission Pan
It’s a large, flat metal pan under the vehicle. Place the drain pan beneath it.
4. Remove The Pan Bolts
Loosen bolts slowly. Some fluid will drain out. Keep rags handy.
5. Drain The Old Fluid
Allow all old fluid to drain into the pan. This may take several minutes.
6. Replace The Filter And Gasket
Remove the old filter and gasket. Install new ones carefully.
7. Clean The Pan
Wipe out any sludge or debris inside the pan.
8. Reinstall The Pan
Use a torque wrench to tighten bolts to the manufacturer’s spec (usually 8-10 ft-lbs).
9. Refill New Fluid
Lower the vehicle. Add new fluid through the fill port using a funnel. Start with 5 quarts, check the level, and add more as needed.
10. Check The Fluid Level
Start the engine, shift through all gears, and check the fluid with the dipstick. Add fluid until the level is correct.
Tip: Always use the exact fluid type for your transmission. Using the wrong fluid can cause serious problems.
Comparison: Dealer Vs. Diy Transmission Fluid Change
Here’s a look at how a dealer service compares to doing it yourself.
| Factor | Dealer Service | DIY |
|---|---|---|
| Cost | $250–$400 | $70–$120 |
| Time | 1–2 hours | 2–3 hours |
| Warranty | Dealer warranty | No warranty |
| Skill Level | Not needed | Intermediate |
Many owners choose DIY to save money, but it does require some mechanical skill.
Fluid Types And Quantities
The 2020 Grand Cherokee uses different transmissions depending on engine type. Using the wrong fluid can damage your transmission, so check your VIN or owner’s manual.
| Engine | Transmission | Fluid Type | Capacity (quarts) |
|---|---|---|---|
| 3.6L V6 | 850RE | Mopar 8&9 Speed ATF | 8.5 |
| 5.7L V8 | 8HP70 | Mopar 8&9 Speed ATF | 8.5 |
Insight: Some shops use cheaper, non-OEM fluids. Always request Mopar ATF to ensure proper performance.
Common Mistakes To Avoid
- Using the wrong fluid type can cause slipping or damage.
- Not replacing the filter allows dirt to stay in the system.
- Overfilling or underfilling the transmission can cause shifting problems.
- Forgetting to torque bolts properly may lead to leaks.
Many beginners miss the importance of checking for leaks after driving. Also, don’t forget to safely dispose of the old fluid at a recycling center.
Real-world Example
A Jeep owner changed his fluid at 70,000 miles. After the change, he noticed smoother shifting and less noise. He also avoided a $3,500 repair estimate by catching dirty fluid early.
Frequently Asked Questions
How Often Should I Change The Transmission Fluid In My 2020 Jeep Grand Cherokee?
Most drivers should change it every 60,000 miles. If you tow or drive in tough conditions, change it every 30,000 miles.
What Type Of Transmission Fluid Should I Use?
Use Mopar 8&9 Speed ATF for both the 850RE and 8HP70 transmissions. Always check your owner’s manual.
Can I Change The Transmission Fluid Myself?
Yes, if you have basic tools and mechanical skills. Many Jeep owners do this at home to save money.
What Happens If I Use The Wrong Fluid?
Using the wrong fluid can cause shifting problems, overheating, or even damage your transmission. Always use the correct type.
Where Can I Learn More About Jeep Grand Cherokee Maintenance?
The best source is the official Jeep website or your owner’s manual. For more details, check Jeep Maintenance.
Taking care of your 2020 Jeep Grand Cherokee’s transmission fluid is a smart investment. With the right tools and knowledge, you can enjoy smoother rides, better performance, and avoid costly repairs. Don’t wait for problems—make fluid changes a regular part of your car care routine.
