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2022 Ram 1500 8-Speed Transmission Shudder/Hesitation at Low Speeds

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Mike T. · rep 0 · May 22, 3:38 AM · 1 replies · solved · Question

Vehicle: 2022 Ram 1500 Big Horn

Hey everyone,

I'm reaching out because I'm experiencing some concerning issues with the transmission in my 2022 Ram 1500 Big Horn. It has the 8-speed automatic, and lately, I've noticed a distinct shudder or hesitation, especially when accelerating from a stop or at very low speeds (around 10-20 mph). It feels like it's struggling to find the right gear or like there's a slight slip.

The truck only has about 35,000 miles on it, and I'm pretty diligent with maintenance. Is this a known issue with the 8-speed transmissions in these newer Rams? I've heard some talk about torque converter issues or software updates, but I'm not sure if that applies to my model year.

Has anyone else with a 2022 Ram 1500 experienced this? What was the fix, if any? Should I be worried about long-term damage? Any advice on what to tell the dealer would be helpful.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 3:38 AM

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ClearTheCode admin answer:

The shuddering or hesitation you're experiencing with the 8-speed automatic transmission in your 2022 Ram 1500 Big Horn is a concern that has been reported by some owners, particularly with the ZF 8HP transmission used in these trucks. While generally robust, specific symptoms like yours can point to a few potential issues.

  1. Software Calibration: Often, the first step a dealership will take is to check for and apply any available Transmission Control Module (TCM) software updates or recalibrations. These updates are designed to refine shift logic, improve drivability, and address known quirks or hesitations.
  2. Torque Converter Issues: A common cause of shuddering, especially at low speeds or during light acceleration, can be issues with the torque converter clutch (TCC). If the TCC isn't engaging or disengaging smoothly, it can create a vibration or shudder. This can sometimes be exacerbated by transmission fluid degradation.
  3. Transmission Fluid Quality/Level: Although your truck has relatively low mileage, incorrect fluid level or degraded fluid can contribute to shifting problems. The 8-speed transmissions are sensitive to fluid quality and precise levels. A fluid flush and filter change might be recommended if the fluid is found to be contaminated or low.
  4. Valve Body or Solenoid Issues: Less common, but internal transmission components like the valve body or individual solenoids can malfunction, leading to erratic shifting or hesitation.

Common OBD-II Codes (if a fault is detected):

  • P0740: Torque Converter Clutch Circuit Malfunction
  • P0731 - P0736: Incorrect Gear Ratio for specific gears (though less likely for a general shudder)
  • P17XX series: Manufacturer-specific transmission codes.

When to See a Shop:

  • Immediately. Transmission issues, if left unaddressed, can escalate quickly and lead to more significant and costly repairs. Since your truck is still relatively new and likely under warranty, it's crucial to have a dealership diagnose it.
  • Clearly describe the conditions under which the shudder occurs (speed, RPM, acceleration level) to help the technician replicate the issue. Insist on a thorough diagnostic, including checking for TSBs (Technical Service Bulletins) related to transmission shudder or torque converter issues for your specific model year.
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