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Why wont a 1998 Tahoe shift out of park having brake light issues and changed the fuse switch still no lights now it park?

Potential Causes and Solutions:

Ensure that the brake lights are working. If they are not, the shift lock solenoid will not be able to disengage, preventing the vehicle from shifting out of park.

Incorrect Fuse: Make sure that the fuse you replaced is the correct one. If you are unsure, refer to the vehicle's owner manual or a reliable online resource.

Wiring Issues: Check the wiring connections associated with the brake lights and the shift lock solenoid. Look for any loose or damaged wires.

Shifter Cable: The shifter cable may be damaged or out of adjustment, causing the vehicle to remain stuck in park.

Shift Lock Solenoid: If the shift lock solenoid is malfunctioning, it will prevent the vehicle from shifting out of park.

Brake Switch: The brake switch, located at the top of the brake pedal, may be faulty, preventing the vehicle from recognizing when the brake pedal is pressed.

Faulty Brake Light Circuit: There may be a problem in the circuit responsible for the brake lights.

Transmission Control Module (TCM):: The TCM, which controls the vehicle's transmission, might have an issue that prevents the vehicle from shifting out of park.

To resolve the issue, it's recommended to have a professional mechanic diagnose the problem and make any necessary repairs, which may require testing the brake light circuit, checking the wiring, evaluating the shift lock solenoid, and potentially further diagnostic steps depending on the specific findings.