The largest online repair guide library for every car

About us
Contact support
FAQ
Sign up
Sign in

2018 Encore Rough Shifting & Check Engine Light - Transmission Issues?

0

Mike T. · rep 0 · May 24, 1:39 PM · 1 replies · solved · Question

Vehicle: 2018 Buick Encore Preferred

Hey everyone,

I'm having some trouble with my 2018 Buick Encore Preferred, and I'm hoping someone here might have experienced something similar. Lately, the car has been shifting really roughly, especially from 1st to 2nd gear, and sometimes it feels like it's struggling to find the right gear.

The check engine light came on a few days ago, and I had it scanned. The code that came up was P0700. I'm worried this might be a serious transmission problem.

Has anyone with a 2018 Encore or similar model had these symptoms? What was the fix? Is this a known issue for these transmissions? I'm trying to figure out if it's something relatively simple or if I'm looking at a major repair. Any advice on what to check or what questions to ask a mechanic would be greatly appreciated!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 24, 1:39 PM

0

Hello Sarah L., thanks for reaching out about your 2018 Buick Encore Preferred. The symptoms you're describing, combined with the P0700 diagnostic trouble code, strongly suggest an issue within the transmission control system.

Here's a breakdown of what might be happening and what steps to take:

  1. Understanding P0700: This code indicates a general fault in the Transmission Control System (TCS). It's a generic code that tells you the Transmission Control Module (TCM) has detected a problem and has illuminated the Check Engine Light. Often, other, more specific transmission-related codes will be stored alongside P0700 in the TCM's memory. A more advanced scan tool can usually retrieve these specific codes.

  2. Common Causes for Rough Shifting and P0700 in Encores:

    • Low or Contaminated Transmission Fluid: Incorrect fluid levels or old, dirty fluid can cause shifting problems.
    • Faulty Transmission Solenoids: These electronic valves control fluid flow within the transmission, regulating gear changes. If one or more solenoids are sticking or failing, it can lead to rough shifts or gear engagement issues.
    • Transmission Control Module (TCM) Issues: While less common, the TCM itself can malfunction, leading to incorrect shift commands.
    • Internal Transmission Wear: In some cases, clutch pack wear or other internal mechanical issues can cause these symptoms, especially if maintenance has been neglected.

  3. When to See a Shop: Given the P0700 code and rough shifting, it's highly recommended to have your Encore inspected by a qualified transmission specialist or a trusted mechanic as soon as possible. Continuing to drive with these symptoms can potentially cause further damage to the transmission.

    • What to ask the shop:
      • Ask them to perform a comprehensive diagnostic scan using a tool that can communicate directly with the TCM to retrieve all stored transmission-specific codes.
      • Request a transmission fluid level and condition check.
      • Inquire about potential solenoid issues and if they can be tested or replaced individually.
      • Discuss the possibility of a software update for the TCM, as sometimes these can resolve minor shifting anomalies.

Addressing this promptly can often prevent more extensive and costly repairs down the line.

Menu

Help & account