What causes an oil leak in a Silverado Sierra?

Just got done crawling around under the truck, very difficult to tell what is exactly leaking. Could be blockoff plate, could be filter, could be oil pan gasket. The pan gasket is the most likely culprit in my eyes as there is oil near the gasket in more than one place.

How to find out if your GMC Truck has an oil leak?

At the end of the day crawl under and start looking for a wet spot or seeping. Do this for five or six days noting each day where and how much leaking there is. It might take you more than a week or just a couple of days to find out where the problem is. It might be a leaking intake manifold or a valve cover gasket.

Why does my Vortec 5300 have an oil leak?

A very common culprit in that oil is the oiler cooler connection or block off plate if you don’t have the cooler. It’s above the filter. I had to put a new gasket in mine. I will check that, thanks for the reply. I am actually not sure if I have an oil cooler or not. Now is as good a time as any to find out.

What to do if you have an oil leak in your car?

Crawling under and wiping down everything. Then drive as you normally would. At the end of the day crawl under and start looking for a wet spot or seeping. Do this for five or six days noting each day where and how much leaking there is. It might take you more than a week or just a couple of days to find out where the problem is.

Just got done crawling around under the truck, very difficult to tell what is exactly leaking. Could be blockoff plate, could be filter, could be oil pan gasket. The pan gasket is the most likely culprit in my eyes as there is oil near the gasket in more than one place.

What to do if your GMC Truck has an oil leak?

Oil always travels down and in the direction the fan blows so I’d look toward the front and see if you see any signs of possibly the front crank seal leaking. It looks like possibly something higher than the pan and/or further forward. First off I’d clean up the whole area really well. Crawling under and wiping down everything.

Where is the oil leak on my Chevy Tahoe?

I had oil leaking down the back side of the engine, dripping out just in front of the bell housing. It turned out to be a leaky oil pressure sensor. It is located behind the intake manifold. These things fail quite often. Mine stopped reporting pressure properly some time before it started leaking. Just a thought for something else to check.

A very common culprit in that oil is the oiler cooler connection or block off plate if you don’t have the cooler. It’s above the filter. I had to put a new gasket in mine. I will check that, thanks for the reply. I am actually not sure if I have an oil cooler or not. Now is as good a time as any to find out.