GMC Sierra Engine

My Truck Idles To High And Ive Replaced The Throttle Positioning Sensor And Checked For Vacuum Leaks And Found None

Do I Have To Change The Catalic Converter With A Gmc Converter I Was Told The Oxygen Sensor Would Not Read Right?

Need Some Information, Could Someone Give Me A Description On How A Bad Or Clogged Cat Converter Would Make A Vehicle Run. Thanks. Marc...

A Few Days Ago I Went To Start My Pickup But All It Did Was Crank. I Puled A Plug To Check For Spark, Inspected The Cap And Rotor, And Made...

My Truck Will Do Weeks Starting Just Fine, But Then Won't Start, Just Turns Over, For A Day Or Two. Then I'll Let It Sit Over Night And It...

Has Been Tuned Up Twice Each By Different Shop May Run Smoothly For Period Of Time Then Roughly For Period Of Time. New Radiator Recently...

I Have A 1997 Gmc Sierra 350 Engine With 65,000 Miles. Yesterday It Was 95+ Degrees Outside Atleast. We Started The Truck, Ran A Few...

Where Would You Cut At To Straight Pipe And If Straight Pipe What To Do With The 02 Sensor?

Will Not Start. Turns Over Not Even An Engagement.

I Replaced The Motor On My 1999 Model Gmc With A 1996' Motor. I Was Using The Original Harness. I Was Having Problems All Over The Place...