Is there a way to tell if your oil pump went bad, or is not working it's a 2.8 GMC Jimmy no gauges just an idiot light
Mar 25, 2006 at 1:18 PM
If the oil pump is not working, the warning light should come on. To confirm flow, remove the valve cover, start the engine, and look for oil; keep shop rags ready.
The owner of a GMC Jimmy 2.8 with no gauges, only an oil warning light, asked how to tell if the oil pump had failed. The expert said the light should come on if the pump is not working, and suggested removing the valve cover and starting the engine to see whether oil comes out, with rags handy.