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What are the reasons why the Buick LaCrosse doesn't move in D gear but moves in R gear?

2 Answers

SkylarMarie

09/06/25 2:25am

There are many reasons why the Buick LaCrosse doesn't move in D gear but moves in R gear, such as issues with the D gear in the transmission, sensor problems, computer board program issues, insufficient transmission oil, or loosened half-shaft screws. It is recommended to visit a local dealer or 4S store for relevant inspection and repair. Below is some related information about the Buick LaCrosse: 1. Intelligent Connectivity: Based on SAIC General Motors' 'Second Engine' vehicle networking strategy, the Buick LaCrosse is equipped with the upgraded and iterated Buick Connect intelligent connectivity technology, offering a wealth of practical interconnected functions. It features Super-ID personal accounts, intelligent voice recognition, and supports Apple CarPlay and Baidu CarLife smartphone mapping, OnStar all-time online assistant, and OTA remote upgrades, making the vehicle connectivity experience smoother and more convenient. 2. Safety Configuration: The Buick LaCrosse has added a second-generation high-definition streaming media interior rearview mirror, supporting one-click switching between a normal rearview mirror and streaming media. It also features brightness adaptive adjustment, field of view zoom, and vertical angle zoom functions. The rear visibility range is three times that of a traditional interior rearview mirror, significantly improving the clarity of the rear image during nighttime driving, providing all-weather and all-around support for user travel safety.

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DeJustin

09/18/25 2:30am

I've encountered quite a few cases of this issue before - when a Buick LaCrosse doesn't move in D gear but can reverse in R gear, it usually indicates an internal transmission problem. Possible causes include valve body blockage, worn clutch plates, or particularly when the transmission fluid has deteriorated or is insufficient, leading to forward gear slippage. It could also be due to control module or sensor failures causing incorrect gear judgment. I recommend stopping the vehicle immediately to prevent further damage and having it towed to a professional repair shop for diagnosis. Technicians can check fault codes and fluid conditions, then replace damaged components or perform software updates if necessary. Regular transmission fluid changes can significantly prevent such issues - never neglect this maintenance, otherwise repair costs could double.

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