Which model is the old Excelle's four-speed automatic transmission?

[CassidyLee]

Buick's old Excelle used an Aisin four-speed transmission. Here are some related introductions about the Buick Excelle: 1. Introduction: The Buick Excelle (Buick-Excelle) is based on General Motors' global platform. The prototype of the Excelle is the latest globally developed mid-size sedan by General Motors, designed and developed under the leadership of GM Daewoo Auto & Technology (GMDAT). On April 21, 2003, SAIC-GM's new mid-size car, known as the "mid-range Buick" Excelle, was launched. SAIC-GM officially entered the highly potential mid-size car market by launching the "Buick Excelle Buick-Excelle" based on a brand-new product platform. 2. Vehicle positioning: The Buick Excelle is positioned as an entry-level family car, featuring a dynamic exterior and high-quality interior, offering a quality experience for "the first car in life"; the new drive system is smooth and fuel-efficient, and the entire series is equipped with the 10th generation OnStar full-time online assistance, comes with an onboard 4G-LTE mobile hotspot, adopts eConnect intelligent interconnection technology, and supports Apple CarPlay and Baidu CarLife.

[DelRowan]

The older Buick Excelle used a four-speed automatic transmission from Aisin Warner's AW40 series, such as the AW40LE or AW40-4LE, paired with 1.8L and 1.6L engines. I've driven this car for many years—the transmission is designed to be simple and reliable, but its drawbacks include high fuel consumption and slow response, especially noticeable as delayed gear shifts during city traffic congestion. Regular maintenance is crucial; an oil change every two years is recommended to extend its lifespan. It's more rugged than modern transmissions, with readily available and affordable repair parts. However, if gear shifts become noticeably jerky, it might indicate aging valve bodies or a faulty electronic control module. Overall, it's a practical choice for daily family use, and Buick selected it back then for its durability.

[NaomiLee]

When repairing cars, the transmission issues of the old Excelle are frequently encountered. That four-speed automatic transmission is mostly the Aisin AW40 model. I've seen many owners complain about high fuel consumption, which is due to the low transmission efficiency of the old design. The gear shifts are smooth, but the acceleration response is sluggish. Common failure points include deteriorated transmission fluid or sensor malfunctions. It's recommended to regularly check the transmission fluid and use the original specifications to avoid slippage. To identify the model, look at the label on the transmission body; those starting with AW are the standard versions. Although outdated compared to newer models, it has low costs and is easy to repair. GM chose it to balance performance and price, making it a decent transitional solution.

[EdwardRose]

My old Excelle has been used for ten years, and the transmission is the Aisin 4-speed AW40 model. It drives steadily with smooth gear shifts, making it suitable for city driving. The issue is that it can sometimes be slow to start or noisy at high speeds. The key to maintenance is changing the oil every two years; otherwise, it's prone to overheating and malfunctions. This transmission is durable, and Buick chose it for its good engine compatibility, but now upgraded models mostly feature six-speed or CVT transmissions for better fuel efficiency.