The largest online repair guide library for every car

About us
Contact support
FAQ
Sign up
Sign in

2022 LaCrosse Transmission Shifting Hard/Hesitation

0

Angela R. · rep 0 · May 22, 3:48 AM · 1 replies · solved · Question

Vehicle: 2022 Buick LaCrosse Essence

I'm having some concerning issues with the transmission in my 2022 Buick LaCrosse Essence. It has about 30,000 miles on it, and recently, I've noticed it's shifting very hard, especially between 1st and 2nd gear, and sometimes from 2nd to 3rd.

There's also a noticeable hesitation when accelerating from a stop, almost like it's struggling to find the right gear. I haven't seen any Check Engine Lights come on, which is a bit puzzling. It's making my daily commute quite unpleasant.

Is this a known issue with the newer LaCrosse models? What could be causing this kind of behavior without any codes being thrown? Any ideas on what I should check first?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 3:48 AM

0

ClearTheCode admin answer:

Transmission shifting issues without a Check Engine Light can be particularly frustrating, but they often point to mechanical or hydraulic problems rather than sensor failures that trigger OBD codes. For your 2022 Buick LaCrosse, here are some common areas to investigate:

  1. Transmission Fluid Level and Condition: Low or degraded transmission fluid is a primary cause of shifting problems. Check the fluid level according to your owner's manual (often with the engine warm and running). Also, note the fluid's color and smell; dark, burnt-smelling fluid indicates a problem.
  2. Transmission Control Module (TCM) Software: Modern transmissions are heavily controlled by software. Sometimes, hard shifting or hesitation can be resolved with a software update or re-flash of the TCM. Dealerships often have proprietary updates for known issues.
  3. Solenoids: The transmission uses solenoids to control fluid flow and engage gears. A failing or sticking shift solenoid can cause harsh shifts or delays. While these can sometimes trigger codes, they don't always, especially if the issue is intermittent.
  4. Valve Body Issues: The valve body is the hydraulic control center of the transmission. Wear or debris in the valve body can lead to improper fluid pressure and shifting problems.
  5. Internal Wear: Less common in a relatively new vehicle, but internal wear on clutches or bands can also cause these symptoms. This is usually a more serious and costly repair.

When to See a Shop:

  • If checking and topping off the transmission fluid (if applicable and safe to do so) doesn't resolve the issue.
  • If the fluid appears dark or smells burnt, indicating internal wear or overheating.
  • Since there are no codes, a professional diagnostic scan with a specialized tool (like a Tech2 or MDI for GM vehicles) can often reveal pending codes or specific transmission data that generic OBD-II scanners miss. A transmission specialist can accurately diagnose the root cause and recommend the appropriate repair, whether it's a software update, solenoid replacement, or more extensive internal work.
Menu

Help & account