You shift from Park to Drive and hear a definitive clunk. Or maybe it happens going into Reverse. That mechanical thud from your 2020 Palisade's drivetrain isn't normal, and while it might be nothing serious, it warrants investigation.
Understanding the Clunk
The 2020 Palisade uses an 8-speed automatic transmission paired with the 3.8L V6. Shifting into gear engages the drivetrain, and any excessive play or worn components can create a clunking noise. The sound might come from the transmission, but often the source is elsewhere in the drivetrain.
Characteristics to Note
- Does it happen only when cold or all the time?
- Park to Drive only, or also Drive to Reverse?
- Is there a delay before the clunk?
- Does the vehicle move immediately or hesitate?
- Any vibration accompanying the sound?
- Worse when on an incline?
Common Causes
Several components can produce a clunk when shifting into gear:
- Worn transmission mount - Allows excessive movement during engagement
- Engine mount deterioration - Transfers engagement shock through drivetrain
- Low transmission fluid - Delayed engagement followed by sudden catch
- Worn CV joints (AWD models) - Play in the axles creates clunk
- Differential wear (AWD models) - Internal play amplified during engagement
- Torque converter issue - Can cause harsh engagement
- Transmission internal wear - Clutch pack or gear wear
AWD System Considerations
If your Palisade is AWD-equipped, the drivetrain has additional components that can contribute to the clunk. The transfer case, rear differential, and additional CV joints all have potential for developing play over time.
Diagnostic Approach
- Check transmission fluid level and condition (if equipped with dipstick)
- Inspect engine and transmission mounts visually and by feel
- Have an assistant shift while you observe drivetrain movement
- Check CV boots for damage and axle play
- On AWD models, check differential fluid level and condition
- Road test to feel for engagement quality beyond the sound
Repair Costs
- Transmission fluid service: $150-$300
- Transmission mount replacement: $300-$500
- Engine mount replacement: $300-$600
- CV axle replacement: $400-$700 per side
- Differential service/repair: $200-$800
- Torque converter replacement: $1,500-$2,500
Warranty Consideration
The 2020 Palisade's 10-year/100,000-mile powertrain warranty may cover this repair if it's transmission or drivetrain related. Document the symptom clearly and have the dealer inspect it while coverage remains.