PIP5122

File in Section:
Service Bulletin
Bulletin No.:
Date:
PIP5122
June, 2013
PRELIMINARY INFORMATION
Subject:
Pop Noise From Fuel Tank After a Cold Start Or EVAP Purge Event (Equinox / Terrain)
Models:
2010 -2014 Chevrolet Equinox
2010-2014 GMC Terrain
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern
Intermittently customers may comment about a pop or multiple popping noise from the rear of the vehicle shortly
after a cold start or EVAP purge event.
Recommendation/Instructions
The technician should be able to duplicate the concern by commanding a purge and seal on the EVAP system using
GDS2. As the vacuum reaches 3 to 5 inches, the pop/popping noise should be duplicated. The cause for this
concern is the auxiliary fuel module in the left side of the fuel tank changing height (spring loaded leg) as the fuel
tank collapses slightly.
The part number on the box of the auxiliary fuel module has not changed but the auxiliary fuel module inside of the
box has. After ordering the auxiliary fuel module, remove it from the box and verify the flange (indicated in the
picture below by "1") of the auxiliary fuel module where the spring loaded "leg" fits into, is either light green or light
orange in color. This is the revised auxiliary fuel module designed to correct the pop/popping noise. The original
auxiliary fuel module has a flange that is white in color.
3460471
(1) Flange location
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is
resolved without completing every step, the remaining steps do not need to be performed.