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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN PASSENGER EXTENDED, 5.0 MREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 690 (ENGINE MECHANICAL - 3.1L UNIT REPAIR)REPAIR INSTRUCTIONSAIR INJECTION CHECK VALVE INSTALLATION
2001 Chevrolet Chevy Express G2500, Van Passenger Extended, 5.0 M

Air Injection Check Valve Installation

2001 Chevrolet Chevy Express G2500, Van Passenger Extended, 5.0 MSECTION Air Injection Check Valve Installation
WARNING: This page is about a different car, the 2002 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Refer to FASTENER NOTICE .
  1. Install air injection check valve pipe adapters, rear.

    Tighten 

    Tighten the air injection check valve pipe adapters to 30 N.m (22 lb ft).

    Fig 1: Air Injection Check Valve Pipe Adapters
    G01703016Courtesy of GENERAL MOTORS CORP.
  2. Install air injection check valve pipe adapters, front.

    Tighten 

    Tighten the air injection check valve pipe adapters to 30 N.m (22 lb ft).

    Fig 2: Air Injection Check Valve Front Adapters
    G01703017Courtesy of GENERAL MOTORS CORP.
  3. Install air injection check valve rear bracket and nuts.

    Tighten 

    Tighten the air injection check valve rear bracket nuts to 25 N.m (18 lb ft).

    Fig 3: Air Injection Check Valve Rear Bracket
    G01703018Courtesy of GENERAL MOTORS CORP.
  4. Install air injection check valve front bracket, bolt and nut.

    Tighten 

    Tighten the air injection check valve front bracket bolt and nut to 25 N.m (18 lb ft).

    Fig 4: Air Injection Check Valve Front Bracket
    G01703019Courtesy of GENERAL MOTORS CORP.
  5. Install air injection check valve rear.

    Tighten 

    Tighten the air injection check valve to 20 N.m (15 lb ft).

  6. Install air injection check valve nut, rear.

    Tighten 

    Tighten the air injection check valve nut rear to 10 N.m (89 lb in).

    Fig 5: Air Injection Check Valve Rear
    G01703020Courtesy of GENERAL MOTORS CORP.
  7. Install air injection check valve front.

    Tighten 

    Tighten the air injection check valve front to 20 N.m (15 lb ft).

  8. Install air injection check valve nut front.

    Tighten 

    Tighten the air injection check valve nut to 10 N.m (89 lb in).

    Fig 6: Air Injection Check Valve Front
    G01703021Courtesy of GENERAL MOTORS CORP.
  9. Install air injection solenoid switch and bolt.

    Tighten 

    Tighten the air injection solenoid switch bolt to 10 N.m (89 lb in).

    Fig 7: Air Injection Solenoid Switch & Bolt
    G01703022Courtesy of GENERAL MOTORS CORP.
  10. Install air injection check valve pipe, clamps, and bolt.

    Tighten 

    Tighten the air injection check valve pipe bolt to 10 N.m (89 lb in).

    Fig 8: Air Injection Check Valve Pipe
    G01703023Courtesy of GENERAL MOTORS CORP.
  11. Install air injection vacuum hose.
    Fig 9: Air Injection Vacuum Hose
    G01703024Courtesy of GENERAL MOTORS CORP.
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.