Rick's Free Auto Repair Advice

Posts Tagged: dexcool settlement

GM 3.1-liter and 3.4-liter dexcool gasket leak problems

GM 3.1-liter and 3.4-liter engines are known for intake manifold gasket leaks. Most people call it the dexcool gasket leak. But it’s not caused by dexcool. It’s a faulty gasket design that’ll happen regardless of which coolant is in the engine. The GM 3.1-liter and 3.4-liter V-6 engines are known for some problems. Top on the list are leaky intake manifold gaskets that can literally destroy the engine if not fixed promptly. Here’s some background on the engine and what issues to look for. The 3.1-liter V-6 engine was made … Read More

GM engine leaks and DexCool

GM engine leaks and DexCool There are loads of websites that rant about the evils of GM’s DexCool coolant and how it destroys engines. There was even a class action lawsuit over DexCool. GM settled without admitting fault. But history has proven that the actual problem was NOT caused by DexCool but by faulty gasket design. In fact, GM has revised the intake manifold gaskets for the 3.1L and 3.4L engines several times to correct the problem. If the problem was solely the result of DexCool, the revised gaskets would … Read More


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