GMC OIL IN COOLANT

I Have Oil In The Antifreeze (thick Light Brown Liquid At The Top Of The Radiator) And My Check Engine Light Is On Giveing A P0161 - O2...

What Causes Oil In The Radiator? Disassembled Engine Removed Heads But See No Evidence Of A Crack Or No Water In Oil At All.

Engine Problem 2001 Other Gmc Models Front Wheel Drive 50,000 Miles When The Malibu Was About 2yrs, The Coolant Light Came On. I...

Two Years Ago, My Suv Was Overheating. I Had Paid A Mechanic (not My Regular Mechanic) To Replace The Radiator And Flush The System. After...

2004 Gmc Canyon Mileage: 67,000. I Noticed My Temperature Gauge Getting Hot. I Checked The Radiator Level And It Was Low. I Thought I Saw...

I Think I Have Oil In My Radiator /antifreeze, What Could Be Causing This