1. Check the brake light switch: It is located above the brake pedal and has a plunger that engages the brake pedal. If the switch is faulty or not properly engaged it may not allow the brake light to illuminate.
2. Verify the condition of the brake light bulbs.
3. Check the fuses and relay: Find the fuse block located in a 1995 Chevy Blazer which can vary depending on the model and trim. Inspect the fuses labeled "STOP" or "BRAKE" and replace any that are blown. Additionally, there is a relay that controls the brake lights, ensure that it is properly seated and not damaged.
4.Examine the brake light wiring for damage, corrosion or loose connections. This includes checking the wires, connectors, and plugs involved in the brake light circuit.
5. Test the brake light switch with the help of a multimeter to confirm its proper functioning. If it's not working properly you might need to replace it.
6. Consult the owner's manual or a professional auto repair manual to find specific details and instructions for resetting the brake lights on a 1995 Chevy Blazer for model specific information.
7. If the issue persists after performing the above checks, it's best to take the vehicle to a qualified auto repair shop for further diagnosis and repairs as required.