Tahoe & Suburban The power, space, and brutal towing ability make the Tahoe and its longer sibling, the Suburban, arguably the best full size SUV's on the market today.

2013 Chevrolet Suburban
Platform: GMT 400, 800, 900

Idle RPM

Old Jun 22, 2018 | 1:38 PM
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cdntahoe2007's Avatar
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Default Idle RPM

Just curious what my idle RPM should be? Mine has been around the 500-600 when I'm sitting at red lights. Often feel the engine rumble is this normal for my 2007 Tahoe?
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Old Jun 24, 2018 | 9:38 AM
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From: kevinkpk
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My experience with low idle on a 5.3 is fuel pressure regulator. This things sets on the fuel rail, or close to it with a vacuum hose. It's a diaphram, pull the hose, if you have fuel in it probably the diaphram has a hole causing the low idle.
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