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2017 XT5 Transmission Hesitation and Hard Shifts

0

Sarah K. · rep 0 · May 22, 3:59 AM · 1 replies · solved · Question

Vehicle: 2017 Cadillac XT5 Luxury

Hello everyone,

I'm experiencing some concerning transmission issues with my 2017 Cadillac XT5 Luxury, equipped with the 3.6L V6 engine and the 8-speed automatic. Lately, it's been hesitating quite a bit when shifting, especially from a stop or at lower speeds. It feels like there's a delay before it engages, and then sometimes it shifts with a noticeable jolt or harshness.

This is particularly noticeable in stop-and-go traffic. There's no check engine light on, but the feeling is definitely not normal. Has anyone else with an XT5 from this generation experienced similar transmission behavior? What was the fix?

My car has about 75,000 miles on it, and I'm worried about potential long-term damage.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 3:59 AM

0

ClearTheCode admin answer:

Transmission hesitation and hard shifts in your 2017 Cadillac XT5 can be unsettling, especially without a check engine light. This generation of XT5, particularly with the 8-speed automatic, has had some reported instances of these symptoms. The issue often relates to the transmission's control module or fluid condition.

Common Causes:

  1. Transmission Fluid Issues: Low or degraded transmission fluid can cause erratic shifting. While 'sealed for life' is often stated, fluid can still degrade or leak.
  2. Transmission Control Module (TCM) Software: The TCM might require a software update or re-calibration. Manufacturers often release updates to refine shift logic and address known issues.
  3. Valve Body Solenoids: Internal solenoids in the valve body can stick or fail, leading to incorrect fluid pressure and delayed or harsh shifts.
  4. Internal Wear: Less common, but wear in clutch packs or other internal components can manifest as shifting problems.

Troubleshooting Steps:

  1. Check Fluid Level (if accessible): While many modern transmissions are sealed, some still have a dipstick or a specific fill procedure. Consult your owner's manual or a professional.
  2. Note Conditions: Pay attention to when the issue occurs (cold/hot, specific gears, acceleration/deceleration) to provide detailed information to a technician.

When to See a Shop: It's highly recommended to have your XT5 inspected by a Cadillac dealership or a reputable transmission specialist as soon as possible. Even without a check engine light, these symptoms indicate a potential problem that could worsen over time. They can:

  • Check for any pending or historical diagnostic trouble codes (DTCs) that might not illuminate the CEL.
  • Inspect the transmission fluid level and condition.
  • Check for any available software updates for the Transmission Control Module (TCM).
  • Perform a road test and advanced diagnostics to pinpoint the exact cause of the shifting issues. Addressing this promptly can prevent more extensive and costly repairs down the line.
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