GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1998 🢒 GMC C-Series Medium Duty Truck B7 🢒 Engine 🢒 Engine Controls - 6.0L and 7.0L 🢒 Throttle Position Sensor Replacement

Removal Procedure
  1. Remove the air cleaner assembly, the extension, and the gasket.
  2. Disconnect the electrical connector from the TP sensor.
  3. Remove the EGR valve attaching bolts.

    4. Notice: The EGR valve is an electrical component. Soaking the EGR valve in a liquid cleaner or a solvent causes damage to the valve.

  4. Remove the EGR valve and the gasket.

    5. Object Number: 318153 Size: SH
  5. Remove the TP sensor attaching screw assemblies (2).

    6. Notice: The TP sensor is an electrical component. Do not soak the TP sensor in any liquid cleaner or solvent, as damage may result.

  6. Remove the TP sensor (1).

Installation Procedure

    Object Number: 318153 Size: SH
  1. With the throttle valve in the idle position, install the TP sensor (1) on throttle shaft.

    2. Rotate clockwise in order to align mounting holes.

    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.

  2. Install the TP sensor attaching screw assemblies (2).

    3. Tighten
    Tighten the screw assemblies to 2.0 N·m (18.0 lb in).

  3. Connect the electrical connector to the TP Sensor.
  4. Check for TP sensor output as follows:
    5. 4.1. Scan the TP sensor output voltage.
    4.2. With ignition ON and engine stopped, the TP sensor voltage should read less than 1.25 volts. If more than 1.25 volts, replace TP sensor.
    4.3. Install the EGR valve and the gasket.
    4.4. Install the EGR valve attaching bolts.

    Tighten
    Tighten the EGR valve attaching bolts to 30 N·m (22 lb ft).