2004 Trailblazer rough running engine
My Trailblazer, that used to run as smooth as a clock, is no longer running like a clock. More like a diesel tractor.

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Chevy Trailblazer - Runs Rough on Cold Start, P0014- New Camera Testing

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Gmc envoy and trailblazer throttle sensor replacement and multi cylinder misfire tips

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Restore Old Headlights to NEW in 1 Minute with Vaseline! Genius Trick

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Signs of Bad Ignition Coils and spark plugs? Here’s the Difference

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The Mystery Hose?

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Why is my engine leaking oil, Trail Blazer PCV.

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When Stupid Cops Mess With FBI Agent

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I Almost Gave Up - Rough Idling With No Check Engine Light - Mystery Solved!

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The Dark Story Behind the Commer TS3 The Knocker: Opposed-Piston Engine Like No Other Ever Built!!!

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Yes, The 4.2 Has A PCV System

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How To Diagnose A 2005 Chevy Trailblazer With A P0300 code | Ignition Coils Pins All Bent Over |

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p0506 Chevy Trailblazer Check Engine Light | Rough Idle FIX | Idle Relearn

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2002 Chevrolet Trailblazer fuel injector & Valve cover gasket replacement.

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17 “Illegal” Tricks That Instantly Make Your Car Run Better

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Chevrolet Trailblazer Valve Cover Gasket Replacement - How To Repair Oil Leak

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Fix rough idle lean code on a envoy or trailblazer

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2003 Trailblazer No Mass Air Flow Sensor, Then What Are These?

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Try This $7 Fix For Collapsed Lifter First! - DIY Valve Lifter Repair Guide

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Restore Old Headlights to NEW in 1 Minute with Old Batteries! Genius Trick

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