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2026. 6. 30. 작업

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2003 Chevrolet Impala - Jerks after Stopping

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The Chevy Impala's 4T65E transmission was said to feature an updated Pressure Control Solenoid starting in 2003. This was a major issue in the 2000-2002 model years. But, there are still many people with the 2003MY vehicles that are experiencing the same issue as you. The vehicle may or may not already have illuminated a Check Engine Light due to the issue. Even if not, it most likely still has stored a fault that could verify that the Pressure Control Solenoid is faulty. The trouble code for this would be P1811 (max adapt, long shift) . The component is located behind the side cover of the transmission and should take ~5 hours for a quality mechanic to complete. It is a rather big job and involves lowing the front cradle to gain access. If you're not 100% comfortable with a job of this magnitude this then get the vehicle to a well known transmission shop. Below: Pressure Switch Assembly (It is possible that the you can get the switch separate from the entire assembly. That's something