Your power locks for the doors stop working on a 1995 Chevy Tahoe is it fuse or relay?

It's *more likely* a faulty switch, wiring issue, or the actuator motors themselves than a blown fuse or bad relay in a 1995 Chevy Tahoe. While a blown fuse is *possible*, power lock systems usually don't have dedicated relays. The power is often controlled directly through the switch, with the fuse protecting the entire circuit.

Here's a more likely troubleshooting order:

1. Check the obvious: Make sure the power windows are working. If they aren't, it suggests a larger electrical problem (possibly a fuse). Check your owner's manual for the power window fuse, and check that one first. If that's blown, that's a good place to start your search.

2. Check the door switches: Test all the door lock switches (driver's, passenger's, etc.). If one is completely unresponsive, it's likely the culprit. They're relatively easy to replace.

3. Check the fuses (again, with more focus): Even if the power windows work, there might be a fuse specific to the power locks. Consult your owner's manual for the correct fuse location and rating. Remember that a visually intact fuse can still be bad. Use a multimeter to test the continuity.

4. Check the wiring: Look for any obvious damage to the wiring harness running to the doors and the lock actuators themselves. This is where a multimeter comes in handy to check for continuity. This step is often the most challenging.

5. Test the lock actuators: These are the motors inside the doors that actually move the lock mechanisms. Sometimes they can seize up or fail. You'll likely need to remove the door panels to access and test these.

In short: While a fuse *could* be the issue, it's less probable than a faulty switch, wiring problem, or failed actuator motor. Start with the simplest checks (switches and fuses) and proceed to more complex diagnostics.