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2017 Pacifica Transmission Shifting Rough - Hesitation and Jerking

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Sarah K. · rep 0 · May 22, 5:50 AM · 1 replies · solved · Question

Vehicle: 2017 Chrysler Pacifica Touring L

Hey everyone,

I'm experiencing some concerning issues with the transmission in my 2017 Chrysler Pacifica Touring L. Lately, I've noticed a lot of rough shifts, especially at lower speeds and when downshifting. It feels like the transmission hesitates before engaging, and sometimes there's a noticeable jerk.

It's particularly bad when I'm in stop-and-go traffic or trying to accelerate from a slow roll. The car just doesn't feel as smooth as it used to. I'm worried this could be a sign of a bigger problem.

Has anyone else with a 2017 Pacifica, or even a similar model year, encountered these kinds of transmission issues? What did you do to resolve them? Any advice or shared experiences would be greatly appreciated!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:50 AM

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ClearTheCode admin answer:

It sounds like you're describing a common concern with the 9-speed automatic transmission found in many Chrysler Pacifica models, including your 2017. Here's a breakdown of potential causes and what steps you can take:

  1. Software Calibration Issues: Many early models with the 9-speed ZF transmission (948TE) experienced rough shifting, hesitation, and even clunking due to initial software calibration. Chrysler often released software updates to address these issues, improving shift quality and overall drivability.

  2. Transmission Fluid Level and Condition: An incorrect fluid level (either too low or, less commonly, too high) or degraded transmission fluid can significantly impact shifting performance. The 9-speed transmission is sensitive to fluid quality and level.

  3. Valve Body or Solenoid Problems: The valve body controls the flow of transmission fluid to engage different gears. Issues with the valve body itself or its solenoids can lead to erratic shifting, delays, or harsh engagements.

  4. Internal Wear or Component Failure: While less common in newer vehicles, internal wear on clutches, bands, or other components can eventually cause these symptoms. This is usually accompanied by more severe and consistent problems.

Diagnostics & Next Steps:

  • Check for Diagnostic Trouble Codes (DTCs): Even if your check engine light isn't on, a professional scan tool can often pull 'pending' or 'history' codes related to the transmission (e.g., P07xx series codes like P0734 for incorrect gear ratio, P0729 for 6th gear incorrect ratio, or P0700 for transmission control system malfunction). This is the first step a shop will take.
  • Visit a Dealership or Reputable Transmission Shop: Given the complexity of modern transmissions, it's highly recommended to have your Pacifica inspected by a Chrysler dealership or a specialized transmission repair shop. They have the specific diagnostic tools and expertise for these units.
  • Inquire About Software Updates: Ask if there are any outstanding Transmission Control Module (TCM) software updates for your specific VIN. This is often the simplest and most effective fix for early-model shifting complaints.
  • Transmission Fluid Inspection: Request a thorough inspection of your transmission fluid level and condition. If the fluid looks dark, smells burnt, or is low, a fluid and filter service might be recommended, though this should be done carefully according to manufacturer specifications.

When to See a Shop:

You should schedule an appointment as soon as possible, especially if:

  • The shifting issues are getting progressively worse.
  • You notice any warning lights on your dashboard (e.g., Check Engine Light, Transmission Warning Light).
  • There are any fluid leaks under the vehicle.
  • The vehicle is struggling to move or engage gears at all.

Ignoring transmission problems can lead to more severe and costly repairs down the line. A professional diagnosis is crucial to pinpoint the exact cause.

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