QUESTION: I was just informed the coolant leak in my GMC Yukon is due to a leaking intake manifold gasket. Apparently this is a common problem. I was shocked at the price quoted for the repair and am ...

If you think about it, there are things about your car that just don’t make sense. You’ve been told that more air is a good thing for power, that a cold air intake, more scoops, more vents, etc, are a ...

A vacuum leak can cause a variety of drivability issues in your vehicle. Here's how you can isolate the leak and the steps ...

Whether it's a puddle under your car or a grimy mess inside your engine bay, finding engine oil where it's not supposed to be is never an enjoyable experience. Normally, oil remains contained within ...

This generation of Holden engines was prone to failure of the crankcase ventilation valve (PCV). When it failed, it caused a vacuum leak in the engine that could easily cause rough running and hard ...

Turbo engines are more vulnerable to boost leaks because of more piping and hose connections versus a non-turbo engine. The hoses, if not properly addressed, can come loose, dry out, or crack over ...

My five-litre VR Holden Commodore has a big flat spot when cold and hunts on very light throttle. Parts replaced include the ignition module, coil, distributor, injectors, fuel pump, plugs, leads, and ...

When introduced for the '05 model year, the C6 received the evolutionary Gen IV LS2 powerplant, which carried ratings of 400 horsepower and 400 lb-ft of torque. While the new engine's cylinder heads ...