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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN PASSENGER EXTENDED, 5.0 MREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 878 (ENGINE CONTROLS - 8.1L - REPAIR INSTRUCTIONS)REPAIR INSTRUCTIONSTHROTTLE BODY ASSEMBLY REPLACEMENTINSTALLATION PROCEDURE
2001 Chevrolet Chevy Express G2500, Van Passenger Extended, 5.0 M

Installation Procedure

2001 Chevrolet Chevy Express G2500, Van Passenger Extended, 5.0 MSECTION Installation Procedure
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2001 GMC Yukon XL, 2001 GMC Sierra, 2001 GMC Cab & Chassis Sierra, 2001 GMC C3500 HD, and 2001 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Throttle Body Assembly
    GM470760Courtesy of GENERAL MOTORS COMPANY
  1. Install a new throttle body gasket.
  2. Install the throttle body assembly.
  3. Refer to FASTENER NOTICE in Cautions and Notices.
    IMPORTANT:

    Always use a torque wrench in order to obtain the proper torque.

    Install the throttle body attaching nuts.

    Tighten 

    Tighten the throttle body nuts to 10 N.m (89 lb in).

    4. IMPORTANT:

    Ensure that the electrical connector to throttle body motor and the connector seal are properly installed and not damaged.

  4. Connect the TP sensor harness connector.
  5. Connect the throttle actuator motor harness connector.
  6. Install the air induction assembly.
  7. With the vehicle not in reduced engine power, turn ON the ignition, with the engine OFF. Inspect for complete throttle opening and closing positions. Use a scan tool to monitor the throttle angles while operating the accelerator pedal to open and close the throttle. The accelerator pedal should operate freely without binding between full closed throttle and wide open throttle (WOT).
  8. Start the engine.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.