2015 GMC Sierra 1500 cooling system problems: oil leaked into cooling system

Oil Leaked Into Cooling System

2015 GMC Sierra 1500

This problem may be covered under warranty. Ask your GMC dealer.

10.0

really awful
Typical Repair Cost:
No data
Average Mileage:
34,900 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. replace radiator, oil cooler and all hoses (1 reports)
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2015 GMC Sierra 1500 cooling system problems

cooling system problem

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2015 GMC Sierra 1500 Owner Comments

problem #1

May 132018

Sierra 1500 SLE 5.3L V8

  • Automatic transmission
  • 34,863 miles

A D V E R T I S E M E N T S

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oil leaked into cooling system

While traveling home, low oil level light went on. Checked oil and it’s low. Added oil and 1 hour later the low oil level light was on again. Stopped and had it checked and found the oil and coolant mixed in the cooling system bottle. Built in oil cooler inside radiator leaked oil into cooling system. Dealer replaced radiator with oil cooler, all hoses and flushed system.

- mikie8190, Havana, US

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