GM Service Manual Online
For 1990-2009 cars only
Makes
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GMC_Truck
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2009
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Sierra - 4WD
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Diagnostic Navigation
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Vehicle Diagnostic Information
🢒 Input Speed Sensor Removal
Remove the input speed sensor (ISS) retaining bolt (247).
Use a small tipped screwdriver to carefully pry the ISS wiring harness retaining brackets from the pump housing. Being careful not to damage retainer clips.
Remove the ISS assembly (250).