12575182-UPDATE - Camshaft Position Sensor Update Kit For 2001-2003 GM 8.1L

12575182-UPDATE - Camshaft Position Sensor Update Kit For 2001-2003 GM 8.1L


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Part# 12575182-Update - Camshaft Position Sensor Update Kit for 2001-2003 GM 8.1L


This is a packaged kit that contains all the necessary components to convert your GM 8.1L to the newer style camshaft position sensor (12591720) that is readily available. The stock engine computer will run this new setup without any issues, so no tuning or updates are required.

The 2001 camshaft gear / sprocket and camshaft timing position sensor were revised in 2002 and again in 2004 to maximize the benefits of Magnetic Relutance (MR) or "mirror image" ignition timing. To "read" the new changes, the camshaft position sensor also had to be updated to match the 2004+ camshaft gear. The older style camshaft position sensor (12575182) was discontinued by GM and is only available in limited quantities. 


  • New OEM Camshaft Sprocket/Gear, Chain & Crankshaft Sprocket/Gear
  • New OEM Engine Timing Cover
  • New OEM Sensor Adapter Pigtail
  • New OEM Camshaft Position Sensor


  • 2001-2003 Workhorse Chassis Equipt with an 8.1L Engine
  • 2001-2003 Chevrolet/Sierra/Suburban Equipt with an 8.1L Engine


why does my cps read zero after replacement. why is it that they say there is limited availability for stock sensor. I have no problem finding the sensor but it doesn't work ( Matthew Ortiz, 08/21/2019 )


    If the original one had the same issue maybe it is not the sensor that is the issue? Maybe a connector or wiring? This part says limited availability because the part is discontinued. Not sure where you find them but they may be a knock off, that also may be the reason the replacement you have does not work? Hope this helps.

( Support )

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WARNING: Products may contain one or more chemicals known in the State of California to cause cancer and/or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov

VIN Verification Service Item

This product allows for a VIN verification service.

  • This is a service that we provide free of charge when a part is purchased.
  • When you provide your VIN below we will personally verify your part selection by your VIN before shipment of your order.
  • This helps ensure that this is the correct part for your vehicle.
  • This is not an automatic VIN check, it is done by a parts specialist once order is placed.
  • We can only VIN verify vehicles back to model year 1996, if older we can help but can't guarantee fitment.
  • If you would like to have your part selection verified before purchase please call or email us.

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  • Views: 26287
  • Brand: Workhorse
  • Product Code: 12575182-Update
  • Availability: In Stock
  • $472.50
  • $350.00

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