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Davo, Master technician
Category: Chevy
Satisfied Customers: 3253
Experience:  ASE Master Technician also L1 Advanced Engine Performance Specialist
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comment on trouble code p1665

Resolved Question:

comment on trouble code p1665
Submitted: 11 years ago.
Category: Chevy
Expert:  Davo replied 11 years ago.
It's the vent valve circuit of the evap system.Check the ERLS fuse in the underhood fuse box.If it's okay i would replace the evap vent valve.
Davo and other Chevy Specialists are ready to help you
Customer: replied 11 years ago.
Reply to Davo/diablo666's Post: give location of evap vent valve
Expert:  Davo replied 11 years ago.
By the cannister behind the gas tank.

Evaporative Emission Vent Valve Replacement

Removal Procedure

    Object Number: 82216  Size: SH

  1. Disconnect the electrical connector.
  2. Remove the EVAP vent solenoid from the bracket.
    Object Number: 82219  Size: SH

  3. Remove the vent hose from solenoid.
  4. Remove the EVAP vent solenoid.