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The throttle position sensor is serviced as part of the throttle body. Here is how to replace this unit. Feel free to contact me with any questions! Good luck!
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Tighten Tighten the mounting bolts to 22 N·m (16 lb ft).
If you click the view larger image the illustrations should show up.
That is not a vaild acdelco or gm part number. Where are you getting this number from?
Ok well I do see that what you got is to fit this vehicle. I work from gm's website and they show this all being replaced as one unit meaning the throttle body and so on. Here is an illustration that I have from another source.
I am still with you. I am trying to locate the correct procedure for just the sensor replacement. I am thinking the gm does not have one as gm shows this to be a complete unit.