Why is the transmission warning light on in a Buick LaCrosse 2.4?
1 Answers
Buick LaCrosse 2.4 transmission warning light may illuminate due to issues with wiring or engine faults. Specific explanations are as follows: 1. Starting system fault: Engine fails to crank or cranks too slowly, caused by insufficient battery charge, loose or severely oxidized battery terminal clamps; faulty ignition switch, starter malfunction, open circuit in starting wiring or poor connector contact. 2. Ignition system fault: Malfunctioning ignition coil resulting in weak or no high-voltage spark, faulty igniter. 3. Fuel injection system fault: Empty fuel tank, inoperative fuel pump or low pump pressure, leaking/deformed fuel lines, disconnected fuel pump relay, faulty fuel pressure regulator, excessively dirty fuel filter.