Question about 2001 GMC Sierra 1500HD

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Hi I Need Some Major Help We Have A 2001 GMC W4500 With The GM 350 In It We Have Been Having Engine Codes Coming Up At Randon And When They Do It Runs Like **** We Can Erase The Codes And Will Sometimes Go Two Days Before Ever Putting A Pending Code in P0122 Throttle Position Sensor (Curcuit Low) Is Usally The First Code To Come Up But Not Allways It Has Been Changed And It Still Does It And Everytime It Throws Codes It Throws Differant Codes Under TPS Code But It Does Not Always Trow TPS This Morning It Was The Worst It Would Not Even Idle Right Then It Died After It Died Run Test And TPS Was One Of The Codes Alone With A Few Other Code I Erased The coded And Restarted The Truck And Rechecked For DTS Codes And The Only Pending Code That Came Up That Time was P0107 Manifold Absolute Pressure/Barometric Pressure Circuit Low Imput I Erased Codes Again And Now I Dont Show Anymore Codes For Now And It Runs Good Till Next Time It Does It Again Im Out Of Ideas We Cant Change Everything That Comes Up In Code Besides The Fact They Are Random And Never Come Up Same Codes In A Row Thanks Jeremy Pay No Attention To Heading I Had To Pick Something To Get It To Send And W4500 Is Not In There

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I would change the map sensor and the throttle position sensor and check the wiring while you're at it.

I know it can be frustrating, but try that first.

Posted on Jul 08, 2010


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