GM Service Manual Online
For 1990-2009 cars only

Clicking Type Noise Heard Under Vehicle (Replace EVAP Canister Vent Solenoid Valve)

Subject:Clicking Type Noise Heard Under Vehicle (Replace EVAP Canister Vent Solenoid Valve)

Models:2005-2006 Chevrolet Equinox
2006 Pontiac Torrent
with 3.4L V6 Engine (VIN F -- RPO LNJ)



Condition

Some customers may comment on a clicking type noise coming from under the vehicle. Some may comment that there are always three clicks, while others may refer to the noise as being three bangs.

Cause

The clicking or banging type noise may be caused by the cycling of the evaporative canister vent valve. When the valve is cycling, there may be three clicks or bangs heard. The cycling of the valve is determined and controlled by the PCM.

Correction

Explain to the customer that the sound they are hearing is a normal function of the vehicle's evaporative emission system and that no repairs are needed. If the customer still feels the condition is not acceptable, the canister vent solenoid valve can be replaced with P/N 15788844. This is a quieter operating valve.

Important: Before replacing the valve, please advise the customer that this will only reduce the sound level (volume) of the valve and will not eliminate the sound completely.

Parts Information

Part Number

Description

15788844

Valve, EVAP Canister Vent (Solenoid)

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

J6441

Valve, Evaporative Emission Canister Vent Solenoid - Replace

Use Published Labor Operation Time

Add

Diagnosis Time

0.0-0.3 hr