Why does the GL8 experience jerking and surging during low-speed acceleration?
2 Answers
GL8 experiencing jerking and surging during low-speed acceleration could be due to transmission issues. Common faults with this transmission include jerking during 5th to 4th gear downshift, lack of power during acceleration, no reverse gear, delayed gear engagement, inability to shift to 6th gear, reverse gear impact, engine idling, no acceleration, warning light illumination, and reports of solenoid valve or sensor faults. Introduction to the Buick GL8 model: 1. Positioning: The new-generation Buick GL8 Avenir family has body dimensions of 5219mm × 1878mm × 1799mm with a wheelbase of 3088mm. The design features include the new family-style winged chrome grille, floating roof, sculpted character lines, new rear styling, and front and rear wing-type LED lighting, showcasing elegant style. 2. Powertrain: The new-generation Buick GL8 family is equipped with General Motors' latest Smart Propulsion technology. The powertrain consists of the eighth-generation Ecotec 2.0T variable-cylinder turbocharged engine and a 9-speed HYDRA-MATIC intelligent transmission, delivering 174kW and 350Nm of robust power, with a combined fuel consumption of just 7.9L/7.8L per 100km.
Last year when I was driving my GL8 to pick up the kids, I encountered this issue: the car would suddenly jerk when accelerating at low speeds, which was quite unsettling. The possible cause could be a transmission problem, especially with automatic transmissions when the shifting logic gets confused. Another common culprit is the fuel system – if the fuel injectors are clogged or the fuel pump isn't delivering a steady supply, the engine struggles, causing jerking. Faulty sensors, like a broken mass airflow sensor, can also confuse the ECU about the proper fuel mixture. And if the spark plugs are old and misfiring, that just makes things worse. I think this problem shouldn't be ignored because it affects driving smoothness, and losing control at a traffic light could be dangerous. I later took it to the shop and found the transmission fluid was dirty. After changing it, the car ran much smoother. I suggest you get it checked as soon as possible.
