1998 Tahoe internal problems?
We bought a used 1998 Tahoe last year and we have been noticing a vibration when at idle so we changed the plugs and checked the wires and everything was ok. It burns oil rapidly but doesn't show it from the exhaust pipe. It also has a tendency for the rpms to jump when at an idle to almost 1,000, do we have serious internal problems?
Replace your PCV Valve!
thank you, I will
what motor does it have? if it has the 350, replace intake manifold gasket, mine did the same!
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