* Low transmission fluid: The transmission fluid helps lubricate the moving parts in the transmission and keep it cool. If the transmission fluid is low, it can cause the transmission to overheat and malfunction, which can trigger the service light to come on.
* Dirty transmission fluid: Dirty transmission fluid can also cause the transmission to malfunction and trigger the service light to come on. Transmission fluid should be changed every 30,000 miles or so.
* Faulty transmission sensor: A faulty transmission sensor can send false signals to the transmission computer, which can cause the transmission to malfunction and trigger the service light to come on.
* Electrical problems: Electrical problems can also cause the service light to come on. These problems can include anything from a loose connection to a faulty wiring harness.
If the service light on your 2001 Chevrolet Cavalier comes on, it's important to take it to a qualified mechanic to have it diagnosed. They will be able to determine the cause of the problem and recommend the appropriate repairs.
