Chevy Traverse Oil Leak: Common Spots on the 3.6 V6 and New 2.5 Turbo, and What Each Repair Costs

An oil leak is one of those problems that starts as "huh, a spot on the driveway" and slowly turns into "why does my car smell like burning toast at red lights?" The good news: most Traverse leaks come from a handful of places, and some have GM bulletins that point straight at the fix.

Where Traverse oil leaks usually come from

The 2015-2016 3.6 V6 filter adapter leak

GM's bulletin PIP5392 ("Oil Leak From Left Side Of Engine") covers the 2015-2016 Traverse, Acadia and Enclave with the 3.6 V6 (LLT or LFX). GM lists four possible causes, from cheapest to worst:

• A leaking oil filter seal. Fix: a new filter. (Yes, sometimes it's that simple.)
• A leaking gasket between the filter adapter and the block. Fix: new gasket.
• A casting defect in the aluminum filter adapter on LFX engines with the cartridge-style filter. Fix: new adapter and gasket.
• A mis-machined block surface with a distinct step you can feel with a fingernail. GM's fix for this rare case is a replacement engine.

GM tells techs to add dye, clean the area, run the engine 20 minutes and find the exact leak with a black light before replacing anything. That's a good standard to hold any shop to.

The 2025 Traverse 2.5 turbo front leak

GM bulletin 25-NA-113 (May 2025) covers the 2025 Traverse and Enclave and the 2024 Acadia. Technicians may find oil near the oil cooler at the front of the engine. The cause is an oil galley plug behind the cooler that wasn't installed properly at the factory. The fix is to pull the cooler and replace the plug (GM part 11602948). On a new Traverse, this should be a warranty repair.

Valve cover and oil pan gaskets

These are the age-and-heat leaks. RepairPal notes a leaking valve cover gasket can let oil fill the spark plug wells and cause misfires, and can soften nearby coolant hoses. Oil pan leaks can hide behind plastic underbody covers, so watch your dipstick and look for smoke or a burning smell. RepairPal also points out that oil from higher up the engine can run down and look like a pan leak, so the source should be confirmed first.

What it costs

Why such a big spread on valve covers? On some engines the intake manifold or other parts have to come off to reach the rear cover, which piles on labor. Also ask whether the quote includes spark plug tube seals, which RepairPal says usually get replaced along with the gasket.

Easy things to try first

• Check the oil level and top it up. Running low is how a $400 leak becomes a much bigger bill.
• Make sure the filter is tight and the cap is on. A loose filter or missing oil cap after a recent oil change is a common, free fix.
• Clean and watch. Degrease the area, drive a few days, and look for fresh wet oil. The highest wet spot is usually the source.
• Slide cardboard under the car overnight to see where it drips and what color it is. Brown or black is likely oil. Red could be transmission fluid.

What to ask the shop

• "Did you dye-test it to confirm the exact source?"
• "Does my VIN match PIP5392 or 25-NA-113?"
• "Is this a gasket, a seal, or a cracked part?"
• "Does the valve cover quote include tube seals?"
• "Anything else soaked in oil that should be replaced now, like belts or motor mounts?"

Is it worth fixing?

Small seeps can wait a bit if you keep the oil topped up. Active drips, burning smells or oil near belts should be fixed soon. Low oil is hard on a V6's timing chain and bearings, and that's a far more expensive conversation.

More Traverse guides are on the Chevrolet Traverse page. If it won't crank at all, see our Traverse no-start guide. Prices checked October 14, 2026.