Questions & Answers for: GMC Envoy roaring noise

...speed and that makes the roaring noise. After it has been spinning a while, the fluid gets warm and gets thinner. that makes the fan turn slower than the engine. This is normal and needs no

my engine continues to idle high while driving sounding like a school bus...I was told it's the cylinder fan and now it's starts to make this squeaking noise which I too was told that was my ...

...noise and others describe it as the engine "racing" or "roaring".(even though the tachometer (if equipped) will be reading normal)  It basicly says that it can make noise on startup due to high ...

roaring engine noise in cab when idling. Idles at 500-950 rpm..When raising rpm in idle noise goes away.2002 GMC Envoy 6 cly. Should idle between 500-600. Clean your throttle body with the battery ...