Installation Procedure

WARNING: Refer to Gasoline/Gasoline Vapors Warning .

WARNING: Refer to Relieving Fuel Pressure Warning .

Fig 1: View Of Digital Pressure Gauge, Special Tools & Components

Courtesy of GENERAL MOTORS CORP.

Relieve the fuel system pressure. Refer to Fuel Pressure Relief (Without CH 48027) or Fuel Pressure Relief (With CH 48027) .
Connect the CH-48027-1 (1) to the CH-48027-2 (2).
Remove the shop towel from around the fuel rail service port, and place in an approved gasoline container.
Perform any tests and/or diagnostics as needed. For the proper usage of the CH-48027 , refer to the manufactures directions.