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Home›Repair guides›Pressure Test Gauge Tool Removal After Fuel System Service

General Motors — Pressure Test Gauge Tool Removal After Fuel System Service

A General Motors service procedure — check it applies to your exact model before use.

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Before you start

  • Technicians working with, or around, fuel systems should be properly trained to utilize extreme care and caution at all times. Failure to exercise extreme caution and care may lead to serious accidents which can result in property damage, personal injury and/or death.

Procedure

  1. Close the manual valve on the pressure test gauge tool.
  2. Close the manual valve on the pressure regulator.
  3. Remove the test tool from the regulator.
  4. Reinstall the test port cap and tighten.
  5. Open the manual supply valve at the tank (Turn Counterclockwise).
  6. Purge the fuel system (Do Not Start the Engine). Refer to Fuel System Purge Procedure below and repeat the procedure several times to fully purge the air out of the system.
  7. Leak check the test port cap and all other connections loosened during the service procedure with an approved leak detection soap solution or electronic leak detector.

Tools required

  • Pressure test gauge tool

Source: manual:FuelSystem.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.