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Luminajd's avatar
Luminajd
Explorer
Mar 17, 2016

Did we break our Avalanche? Do I need to get a 2500?

A few years ago we bought the combo of a 2007 Avalanche, 5.3 and a 2014 Grey Wolf, 30 ft, dry weight of 5296, and have towed this combo about 6 times/year. Yesterday my Avalanche started to make thi...
Tow Vehicles
jwoods61us's avatar
jwoods61us
Explorer
Mar 17, 2016
Has your Avalanche started using oil or smoking when cold? If so it is probably a slapping piston caused by a sticking oil ring. This is fairly common with the 5.3.( Google it ) It will only get worse and if you don't keep oil in it, it will go south in a hurry. The exact thing happened to my friend and it has been a nightmare since he replaced the engine.

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