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2018 Pacifica Transmission Hesitation and Rough Shifts - Is this normal?

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Sarah K. · rep 0 · May 22, 5:59 AM · 1 replies · solved · Question

Vehicle: 2018 Chrysler Pacifica Touring L

Hey everyone,

I'm looking for some advice on my 2018 Chrysler Pacifica Touring L. Lately, I've noticed some really strange behavior with the transmission, especially when accelerating from a stop or at lower speeds. It feels like there's a significant hesitation before it shifts into the next gear, and sometimes the shifts themselves are quite rough, almost like a jolt.

It's got about 65,000 miles on it, and I've kept up with all the regular maintenance. I'm starting to worry if this is a sign of a bigger problem or just a quirk of the Pacifica's transmission. I've heard some talk about these vans having transmission issues, but I'm not sure if it applies to my model year.

Has anyone else experienced this with their Pacifica? Is there a known TSB or recall for this kind of issue? I'm trying to figure out if I should take it to the dealer immediately or if there are some common troubleshooting steps I can try first. Any insights would be greatly appreciated!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:59 AM

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This sounds like a common concern for some Chrysler Pacifica owners, particularly with the 9-speed automatic transmission. Hesitation and rough shifts can indicate several underlying issues, some of which have been addressed by Chrysler through Technical Service Bulletins (TSBs).

Here's what you should consider:

  1. Transmission Software Updates:

    • Cause: Often, these symptoms are related to the Transmission Control Module (TCM) software. Early versions of the software for the 9-speed transmission (ZF 9HP) had known issues with shift logic and adaptability.
    • Action: Many TSBs have been issued to address these shifting concerns by providing updated software calibrations. A dealership can check if your specific VIN has any pending software updates for the TCM. This is often the first and least invasive step.

  2. Transmission Fluid Level and Condition:

    • Cause: Incorrect fluid levels (either too low or too high) or degraded transmission fluid can lead to poor shifting performance.
    • Action: While the 9-speed transmission is often considered "sealed for life," checking the fluid level and condition (color, smell) by a qualified technician is crucial, especially if no software update resolves the issue.

  3. Valve Body or Solenoid Issues:

    • Cause: Less commonly, internal transmission components like the valve body or individual solenoids can malfunction, leading to inconsistent fluid pressure and rough shifts.
    • Action: This would typically require more in-depth diagnostics, potentially involving pressure tests and component inspection.

  4. Diagnostic Trouble Codes (DTCs):

    • Action: Even if your check engine light isn't on, a pending or stored code might exist. A professional scan tool can reveal codes like P0700 (Transmission Control System Malfunction) or P0730 (Incorrect Gear Ratio), which would point directly to a transmission problem.

When to See a Shop:

  • Immediately: If the problem is worsening, you experience a complete loss of a gear, or the "Check Engine" light illuminates.
  • Soon: If a software update doesn't resolve the issue, or if you're unsure about the transmission fluid's condition. Given the complexity of modern transmissions, professional diagnosis is highly recommended to prevent further damage.

Always start by contacting your local Chrysler dealership with your VIN to inquire about any open TSBs or recalls related to transmission performance for your 2018 Pacifica.

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