How do you reset the low coolant level light on 92 Oldsmobile achieva v6 3300 engine?

There's no reset button for the low coolant light on a 1992 Oldsmobile Achieva (or most cars for that matter). The light is triggered by a sensor that detects low coolant level in the overflow reservoir. The light goes off automatically *only* when the coolant level is sufficiently high enough to be detected by the sensor again.

Therefore, to turn off the low coolant light, you need to:

1. Identify the Coolant Level: Locate the coolant overflow reservoir (often a translucent plastic tank). Check the coolant level. The reservoir will have markings indicating minimum and maximum levels.

2. Add Coolant: If the coolant level is low, add the correct type of coolant. Consult your owner's manual to determine the proper type (usually a 50/50 mix of coolant and distilled water). Never open a hot radiator or reservoir; let the engine cool completely first.

3. Check for Leaks: Before adding more coolant, inspect the system for leaks. Look closely at hoses, clamps, the radiator, and the water pump for any signs of leakage. A persistent low coolant level indicates a leak that needs to be repaired.

4. Run the Engine: Once you've added coolant and checked for leaks, run the engine for a short period (10-15 minutes) to allow the coolant to circulate and the sensor to register the higher level.

5. Check Again: After the engine has cooled, re-check the coolant level. If the level is still low, you likely have a leak and need to have it repaired by a mechanic.

If the light stays on *after* adding coolant and checking for leaks, there might be a problem with the coolant level sensor itself, the wiring to the sensor, or another issue within the cooling system. In this case, a mechanic should diagnose the problem.