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Home >> GMC >> 1987 >> Magnavan 5.7 M, 400/M40 >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> CCC Components Removal & Installation >> Removal & Installation >> Throttle Position Sensor (TPS) >> Installation

Throttle Position Sensor (TPS): Installation

  1. With throttle valve in normal closed position, install TPS on throttle shaft. Rotate TPS counterclockwise to align mounting holes. Install TPS screws, lock washer, and retainers. Tighten screws to 18 INCH lbs. (2.0 N.m). Connect electrical lead. Replace gasket and install air cleaner. Perform OUTPUT CHECK.
NOTE: Throttle position sensor is nonadjustable. Only output voltage can be monitored.


With throttle valve in normal closed position, install TPS on throttle body. Ensure TPS lever is aligned with TPS drive lever on throttle body. Install screws, lock washers, and retainers. Connect electrical lead. Replace gasket and install air cleaner. On 2.8L engine, perform OUTPUT CHECK.

NOTE: Throttle position sensor on all models except 2.8L engine is nonadjustable. Only output voltage can be monitored on these engines.
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