2007 2500HD Throttle Positioning Sensor - The 1947 - Present Chevrolet & GMC Truck Message Board Network

DBear · 09-04-2010, 08:03 PM

I have a 2007 2500Hd (new body style), and I have a engine light on the dash. I had Auto Zone check it and they said it is the TPS- Throttle Positioning Sensor. Does anyone know anything about this?? And does anyone know where this sensor is located? Thanks for any help you can add.

**bwood** · 09-04-2010, 11:10 PM

Check the wires and connector on the throttle body? The TPS is integral to the throttle body assembly, it is part of the throttle blade motor (thats not its technical name, just the only one I can come up with). Your engine doesn't use a accelorator cable, it is all electronic; Drive By Wire (DBW). When you mash the pedal, a little motor in the throttlebody opens the throttle blade and the TPS is part of it. I'm not sure if it can be replaced seperately, but my guess is no. The last time this code came up on one of these DBW engines, it was on my aunt's GMC Envoy and a rodent had chewed the wires at the throttlebody.

clinebarger · 09-05-2010, 06:56 PM

Whats the exact code (Pxxxx)? As Bwood said the TPS sensors are intergrated into the throttle body, There are 2. One rising, and one falling TPS sensor signals.

rare86 · 10-11-2010, 06:55 PM

my 08 1500 has the tps code come up evey 45000-50000 miles. Last time the dealer cleaned the throttle body ,and sent it back with a $175 bill.Its considered maintenance,nit warranty. I later learned thats a common issue. Clean the throttle body around the platewith some carb cleaner, but dont drown it. DISCONNECT THE BATTERY before messing with it. I was told it will thro off the calibration. I was told that the goo around the plate throws off the calibration and sets the code.

rare86 · 10-12-2010, 08:00 AM

Just wanted to clarify a point just in case. I was told by several people "do not move throttle plate by hand if battery is hooked up. Even with the switch off, it can mess up the calibration of the throttleplate." It will require a scanner to relearn the calibration if it is messed up.

rare86 · 10-13-2010, 06:50 PM

Ok, truck is fixed so I thought Id post in case someone else came across the same thing. I had my throttle relearned and everything went back to normal.
It was explained to me that as the throttle body gets dirty, the ecm makes adjustments. WHen the throttle body is cleaned, it is a sudden change and the ecm doesnt know what to do. He said it would readjust back to normal after 150-200 miles of driving since the GM electronics learn how to adjust settings based off of your driving habits. In short, if you clean your throttle body on a newer DBW GM, have access to a Tech 2 scanner that can aid in relearning the TPS or be prepared to make a 150 mile road trip.

i had done this once before and didnt have this issue. i guess its a 50/50 chance

**bwood** · 10-14-2010, 10:20 PM

Thanks for the update.

09-04-2010, 08:03 PM	#1
DBear Registered User Join Date: Nov 2008 Location: Rowlett, TX Posts: 861	2007 2500HD Throttle Positioning Sensor I have a 2007 2500Hd (new body style), and I have a engine light on the dash. I had Auto Zone check it and they said it is the TPS- Throttle Positioning Sensor. Does anyone know anything about this?? And does anyone know where this sensor is located? Thanks for any help you can add.

09-04-2010, 11:10 PM	#2
bwood Registered User Join Date: Jan 2003 Location: Denison, Texas Posts: 1,919	Re: 2007 2500HD Throttle Positioning Sensor Check the wires and connector on the throttle body? The TPS is integral to the throttle body assembly, it is part of the throttle blade motor (thats not its technical name, just the only one I can come up with). Your engine doesn't use a accelorator cable, it is all electronic; Drive By Wire (DBW). When you mash the pedal, a little motor in the throttlebody opens the throttle blade and the TPS is part of it. I'm not sure if it can be replaced seperately, but my guess is no. The last time this code came up on one of these DBW engines, it was on my aunt's GMC Envoy and a rodent had chewed the wires at the throttlebody. __________________ 1998 GMC Sierra SLE 1/2 ton 2WD 305 Vortec -Gibson Stainless Cat Back Swept Side -SS Wheels 2005 Honda CRF250R 2006 Honda CRF150F

09-05-2010, 06:56 PM	#3
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: 2007 2500HD Throttle Positioning Sensor Whats the exact code (Pxxxx)? As Bwood said the TPS sensors are intergrated into the throttle body, There are 2. One rising, and one falling TPS sensor signals.

10-11-2010, 06:55 PM	#4
rare86 Extended cab fanatic Join Date: Oct 2009 Location: Gardendale, Tx Posts: 314	Re: 2007 2500HD Throttle Positioning Sensor my 08 1500 has the tps code come up evey 45000-50000 miles. Last time the dealer cleaned the throttle body ,and sent it back with a $175 bill.Its considered maintenance,nit warranty. I later learned thats a common issue. Clean the throttle body around the platewith some carb cleaner, but dont drown it. DISCONNECT THE BATTERY before messing with it. I was told it will thro off the calibration. I was told that the goo around the plate throws off the calibration and sets the code. __________________ If it has a motor, it has my attention.

10-12-2010, 08:00 AM	#5
rare86 Extended cab fanatic Join Date: Oct 2009 Location: Gardendale, Tx Posts: 314	Re: 2007 2500HD Throttle Positioning Sensor Just wanted to clarify a point just in case. I was told by several people "do not move throttle plate by hand if battery is hooked up. Even with the switch off, it can mess up the calibration of the throttleplate." It will require a scanner to relearn the calibration if it is messed up. __________________ If it has a motor, it has my attention.

10-13-2010, 06:50 PM	#6
rare86 Extended cab fanatic Join Date: Oct 2009 Location: Gardendale, Tx Posts: 314	Re: 2007 2500HD Throttle Positioning Sensor Ok, truck is fixed so I thought Id post in case someone else came across the same thing. I had my throttle relearned and everything went back to normal. It was explained to me that as the throttle body gets dirty, the ecm makes adjustments. WHen the throttle body is cleaned, it is a sudden change and the ecm doesnt know what to do. He said it would readjust back to normal after 150-200 miles of driving since the GM electronics learn how to adjust settings based off of your driving habits. In short, if you clean your throttle body on a newer DBW GM, have access to a Tech 2 scanner that can aid in relearning the TPS or be prepared to make a 150 mile road trip. i had done this once before and didnt have this issue. i guess its a 50/50 chance __________________ If it has a motor, it has my attention.

10-14-2010, 10:20 PM	#7
bwood Registered User Join Date: Jan 2003 Location: Denison, Texas Posts: 1,919	Re: 2007 2500HD Throttle Positioning Sensor Thanks for the update. __________________ 1998 GMC Sierra SLE 1/2 ton 2WD 305 Vortec -Gibson Stainless Cat Back Swept Side -SS Wheels 2005 Honda CRF250R 2006 Honda CRF150F



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