GM With Multiple SIR Codes? Connectors Maybe the Culprit!
By Karl Kirschenman, ALLDATA Collision Product Manager
One Friday, I stopped into a friend’s shop to discuss going over
to Serino’s Deli® for
lunch. Instead, Mike drags me into the shop. I was hungry and I’m
thinking this better be some exotic car if Mike is jeopardizing
our ability to get a table at the deli.
The car is a 2009 Chevrolet®
exactly exotic. Mike tells me, “The front fender was damaged and
no one was in the car.” The problem is that the air bag light is
coming on intermittently. Mike has already spent four hours
diagnosing the issue and they can’t deliver the car with the
light on. Did I mention it was Friday?
Our lunch plans were now in serious jeopardy.
Nothing’s making sense with the codes. Safety systems were
inactive at the time of the accident and the repair was simply
removing a fender and bolting on a new one. The customer informed
Mike that this was not an issue before the accident.
With a fresh set of eyes, I start going through the repair with
Mike. We start by looking into the diagnostic trouble codes
again, one-by-one. First one, nothing. Second one, nothing. On
the third DTC, we find a service campaign for the OCS systems.
Ten minutes of research and now we understand the root cause of
Lunch is back on!
It turns out that this has been an issue with several GM makes
and models going back to 2005 and continuing into some 2012
models. The affected makes include: Buick, Cadillac, Chevrolet,
GMC, Pontiac, Saturn, Hummer, Daewoo and Opel models.
When a GM customer complains about an intermittent air bag light
on his or her dashboard, check for these DTCs being set: B0012,
B0013, B0015, B0016, B0019, B0020, B0022, B0023, B0026, B0033,
B0040, B0042 or B0044. It was B0022 that tipped Mike and me off
to the problem. The codes may be set as current or in history in
the sensing and diagnostic module (SDM).
The issue involves examining the connector position
assurance (CPA) retainer. And no, it has nothing to do with a
certified public accountant. The offending retainer might be
loose, missing or damaged at an air bag/SIR module electrical
connector or at a deployment loop wiring harness electrical
Of course before you touch any SIR component, or even think of
working on the SIR system, it must be disabled. Otherwise, you
could be eating an airbag for lunch instead of a great deli
Speaking of great deli sandwiches, while Mike and I were at
lunch, his top tech took care of the problem. The tech told Mike
that, referring to the OE procedure and parts information, he
quickly isolated the affected connector and noted that corrosion
was the culprit. Mike’s parts supplier delivered the new retainer
pronto and the repair was completed in time for Mike to call the
customer. I guess I’ll stop by again next Friday to drag Mike out
to lunch and see what other mysteries we can solve using the
magic of OE repair information.
NOTE: This repair/service information is
excerpted from information published by the vehicle manufacturer,
and intended for the purpose of promoting OE collision repair
information to trained, professional technicians with the
knowledge, tools and equipment to do the job properly and safely.
Before attempting any repairs described, refer to the complete
article in ALLDATA Collision S3500. It is recommended that these
procedures not be performed by “do-it-yourselfers.”
Karl Kirschenman, ALLDATA Collision Product Manager, holds a
Bachelor of Science degree in communication. He has over 10 years
of experience in the collision industry.
Buick, Cadillac, Chevrolet, GMC, Pontiac, Saturn, Hummer, Daewoo
and Opel are registered trademarks of General Motors. Kent Moore
Tools is a registered trademark of SPX Corporation. Serino’s
Deli® All other marks are the property of their respective