O2 Sensor 4 99SSEi - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 04-24-2003, 10:28 AM   #1
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Default O2 Sensor 4 99SSEi

Hi everyone, I need to change my O2 sensor, but i want to do it right, I'm very, very strict when it comes in changing parts. I like to have the right tools to do it but unfortunatly I don't so for this type of change, I also like to know if the BOSH O2 sensors are good or should i go with another kind. And the steps to change it with the right precautions. This is what I don't want to do and that'* do it bad job for been cheap.

Thank you....everyone
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Old 04-24-2003, 11:38 AM   #2
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A number of us have had bad experiences with Bosch. I would go with an ACDelco oxygen sensor. ACDelco parts are much more compatible with Bonnevilles than the Bosch parts.
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Old 04-24-2003, 12:02 PM   #3
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Do you know the part# for the O2sensor of my specific car model 99ssei.
Do u also know what precautions to take before and after or during this change???

Thanx.
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Old 04-24-2003, 02:06 PM   #4
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Sounds like you need a repair manual. If you need a part number, the dealer should be able to give it to you. Also, if a store like Autozone sells ACDelco, then you should be able to get the correct part number from their database.

Oxygen sensors are pretty simple. I use a special oxygen sensor socket tool to get mine out. You want the exhaust to be warm when you unscrew the old one. You need to torque the new one in properly - need a repair manual. Any repair manual should do, like Chiltons or Haynes.

As for the sunroof, you will probably need the factory service manual (from HELM) because the Chilton or Haynes won't have enough detail.
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