PIP4880B

Bulletin No.: PIP4880B
Date: Dec-2012
Subject:
(EREV) DTC P0335 and Or P0336 Stored In The HPCM
Models:
2011-2013 Chevrolet Volt
2012-2013 Opel Ampera
This PI was superseded to update models and years. Please discard PIP4880A.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern
Customer may comment of a MIL, dealer technician may find history DTC P0335 and or P0336 stored in the HPCM.
Recommendation/Instructions
If the DTCs P0335 and or P0336 are found stored ONLY as history in the HPCM, attempt to reproduce the DTCs. If the DTCs do not reset please clear the
DTCs and do not attempt any repairs at this time.
If either of the DTCs are stored in the ECM as well as the HPCM or are current please follow published SI diagnostics.
Warranty Information
For vehicles repaired under warranty use:
Labor Operation
Description
Labor Time
J9999
Powertrain Controls — Labor Only Verify DTC Does Not
Reset And Release Vehicle
Use published labor time
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.
GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may
occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools,
safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that
your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
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