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2020 Grand Cherokee Laredo Rough Shifting and Hesitation

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James R. · rep 0 · May 22, 3:29 AM · 1 replies · solved · Question

Vehicle: 2020 Jeep Grand Cherokee Laredo

Hi all,

I'm having some concerning transmission issues with my 2020 Jeep Grand Cherokee Laredo (3.6L V6). Lately, it's been shifting very harshly, especially between 1st, 2nd, and 3rd gears. Sometimes, it feels like it hesitates for a second or two before engaging the next gear, almost like a lurch.

There's no check engine light on yet, but the problem seems to be getting worse, particularly during stop-and-go traffic. I'm worried about potential long-term damage. Has anyone experienced similar symptoms with their WK2 Grand Cherokee? Could this be a software issue, or something more serious with the transmission itself?

I'm trying to figure out if this is something I can troubleshoot or if it's an immediate trip to the dealership. Any insights would be helpful!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 3:29 AM

0

ClearTheCode admin answer:

Rough shifting and hesitation in a 2020 Jeep Grand Cherokee Laredo can be indicative of several issues, ranging from minor software glitches to more significant mechanical problems within the 8-speed automatic transmission.

  1. Common Causes:

    • Software Glitch/Adaptive Learning: The transmission control module (TCM) uses adaptive learning to adjust shift points. Sometimes, this can get 'confused' or require an update. This is a common first step for dealers.
    • Low or Contaminated Transmission Fluid: Incorrect fluid levels or degraded fluid can lead to poor shifting. The 8-speed transmissions are sealed units, but leaks can occur.
    • Valve Body Issues: The valve body controls the hydraulic pressure that directs fluid to engage clutches. Malfunctions here can cause harsh or delayed shifts.
    • Solenoid Problems: Shifting solenoids can stick or fail, leading to incorrect gear engagement.
    • Internal Wear: Less common in a 2020 model, but internal clutch pack wear or other mechanical failures can cause these symptoms.

  2. Diagnostic Steps:

    • Check for TSBs: Your dealership can check for any Technical Service Bulletins related to transmission software updates or known issues for your specific model year and VIN.
    • Fluid Level Check: While difficult for DIY, a shop can check the transmission fluid level and condition. This requires specific tools and procedures for sealed transmissions.
    • OBD-II Scan: Even without a Check Engine Light, a professional scan tool can sometimes pull 'pending' or 'history' codes related to the transmission (e.g., P0700 - Transmission Control System Malfunction, or specific gear ratio error codes like P0731, P0732).

  3. When to See a Shop:

    • Promptly: Given the nature of transmission issues, it's best to have it inspected by a certified Jeep technician as soon as possible. Continuing to drive with a malfunctioning transmission can lead to more severe and costly damage.
    • Dealership Visit: Since your vehicle is a 2020 model, it is likely still under the powertrain warranty (5 years/60,000 miles). A dealership visit is recommended to ensure any repairs are covered.
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