What happens when you press the recirculate button? Perhaps something is block the return air intake, I would investigate that.
For what it's worth, that isn't always true. The driver's window switches "kinda" worked for the rear windows for a long time until I replaced the unit. I would have to push extra hard or push the switch harder into the housing to make the windows roll down. Finally got tired of it and replaced the switch.
I like the way you think... 5R.....rifling?
I think this is a[nother] terrible step in invasion of privacy.
I had the same issue as OP, following the manual to no avail. The dealer cut and replaced with a hoist that has no secondary latch. The technician stated that the failure is common and due to corrosion. Bob, thanks for posting that video.
Have they managed to make the sheetmetal any thinner???
I wasn't certain which p/n was correct, so I called AC Delco and they gave me the correct part number. Ordered from Amazon and with the help of PB Blaster, heat and elbow grease, I got the old one out and the new one in with little trouble. The code has not returned in about 5 drive cycles. Also purchased the Airaid MIT for my truck. Thanks again for everyone's input and assistance. ACDelco 213-4229
For whats its worth, that p/n comes back as a 24". Did you get 22" or 24"? My wife complains about the highway drone of my 18" that comes out in front of the rear tires. If not too much trouble, I may swap out the 18".
Is it reasonable to suspect that the sensor has failed because it is switching between lean and rich? I would think there were some other issue, like a leak or something to cause it to run rich it would only display rich or lean and the code would return immediately after clearing, similar to when I had an issue with my evap vent. After clearing the code, the code does not immediately return. Sometimes, I will go several weeks between codes.
About once or twice a week (w/ daily driving) the ECM throws P2270 or P2271. DTC P2270 HO2S Signal Stuck Lean Bank 1 Sensor 2 DTC P2271 HO2S Signal Stuck Rich Bank 1 Sensor 2 Is it reasonable to suspect that the sensor has failed because it is switching between lean and rich? Where is Bank 1 Sensor 2 located?
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