Airbag harness recall
02-21-2015, 07:58 AM
#12
Senior Member
Join Date: 02-01-2006
Location: lockport,ny
Posts: 1,377
The definition of "fretting corrosion" is:
Fretting corrosion is a form of accelerated atmospheric
oxidation which occurs at the interface of contacting
materials undergoing slight, cyclic relative motion.
In electric contacts involving non-noble metals,
fretting action can cause rapid increases in contact resistance,
proceeding to virtual open circuits in a matter
of minutes in the worst cases.
In other words, the connector contacts moved very slightly from vibration, causing corrosion, which causes high-resistance.
When I was designing military electronics we always used gold-plated contacts (the "noble" metal) to avoid this problem (among other issues that gold contacts fixed).
Interesting that only one year seems to have this problem (so far). Maybe a different design/vendor for that year.
Steve
Fretting corrosion is a form of accelerated atmospheric
oxidation which occurs at the interface of contacting
materials undergoing slight, cyclic relative motion.
In electric contacts involving non-noble metals,
fretting action can cause rapid increases in contact resistance,
proceeding to virtual open circuits in a matter
of minutes in the worst cases.
In other words, the connector contacts moved very slightly from vibration, causing corrosion, which causes high-resistance.
When I was designing military electronics we always used gold-plated contacts (the "noble" metal) to avoid this problem (among other issues that gold contacts fixed).
Interesting that only one year seems to have this problem (so far). Maybe a different design/vendor for that year.
Steve
02-21-2015, 08:17 AM
#13
Administrator
Join Date: 10-13-2011
Location: Welland,Ont Canada
Posts: 36,498
Yeah! I slid by my Chebby dealer yesterday they checked my vin and said no reason to concern myself with this recall for my '07.
It was -12 F so very icy and cooolld , but the service writer got me a hot chocolate and let me hang out for 45 minutes enough for the car to shed most of the ice built up in the wheel wells !
It was -12 F so very icy and cooolld , but the service writer got me a hot chocolate and let me hang out for 45 minutes enough for the car to shed most of the ice built up in the wheel wells !
02-21-2015, 02:37 PM
#15
Join Date: 09-21-2014
Location: Flint,mi
Posts: 3
I also have an 2009. I received a letter from G.M. To make an appointment with dealer to have a replacement of in-line jumper wiring harness connector with fretting corrosion at the terminal contacts. Dealer replaced unsealed connector with a sealed connector. Took about 1 hour. So far so good, no more air bag lite.
02-24-2015, 05:14 PM
#19
Senior Member
Join Date: 02-26-2010
Location: San Mateo, CA
Posts: 109
I'm assuming this pertains to the right kickboard panel wire issue? I've pulled that wire and lubed it and whenever it rains the warning light comes on for a while until the humidity in the car drops and then goes off. It rains seldom where I live. So, it's definitely moisture/humidity related. I still have to get the ignition recall done. Do they only cut you one key? Wjat about key fobs?
02-24-2015, 05:21 PM
#20
Platinum Member
Join Date: 12-06-2009
Location: Alabama
Posts: 11,094
2 keys are included in the kit. No new fobs because they aren't part of the recall or the problem.
(somewhere on this site I posted a picture of the recall kit and it's contents. I'll see if I can find it. )
(somewhere on this site I posted a picture of the recall kit and it's contents. I'll see if I can find it. )