I've noticed over the past 9 months a slow loss of Dexcool coolant in my
2001 5.3 L Tahoe with 60,000 miles. I've had to top off the overflow tank with about 1/2 quart every 2 months or so.A local oil change shop said they notice a slight coolant residue below the passenger-side cylinder head gasket, their thought on the likely site of coolant loss.
Is a leaking head gasket a common thing on this engine? Does anyone know of a GM tech service bulletin on this matter? I was just wondering if GM will take any financial responsibility for a head gasket replacement repair, if that proves to be the cause.
Thanks.