General Motors' LS4 engine has long been known to have a number of issues - here are the biggest problems owners have ...
The Auto Wire on MSN
A lawsuit says GM blames owners’ low oil for dead Duramaxes. GM’s own bulletins show how a cracked cooler can fake it
The engine oil cooler on GM's 6.6-liter Duramax diesel keeps engine oil and coolant apart. When a Duramax oil cooler cracks, ...
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