O2 Sensor

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Jan 24, 2012 | 08:01 AM

smokey27

Thread Starter

Junior Member

Joined: Jun 2011

Posts: 2

From: Pennsylvania

O2 Sensor

Has any one changed out the Oxygen Censor on the H3. I'm not about to pay $300.00 for something that looks like a relatively easy fix.

Jan 24, 2012 | 09:04 AM

lcurle

Member

Joined: Jan 2012

Posts: 40

From: Kansas

are there only 2 or are there 4 on the H3? I haven't been that far through it yet.

Jan 24, 2012 | 09:13 AM

Doc Olds

Super Moderator

Joined: Jul 2007

Posts: 13,083

From: Boat Town USA MI

This was MOVED because it is NOT an FAQ.

See why: https://www.hummerforums.com/forum/h...section-19461/

Jan 24, 2012 | 09:55 AM

Doc Olds

Super Moderator

Joined: Jul 2007

Posts: 13,083

From: Boat Town USA MI

Quote:

Originally Posted by lcurle

are there only 2 or are there 4 on the H3? I haven't been that far through it yet.

Year and model please?

There are front and rear.

With the I5, since there is only one bank = 2.

LH8 V8 has two banks = 4.

The front is in the exhaust manifold before the mini/pup CAT, the rear is after it.

Jan 24, 2012 | 10:00 AM

Broken Halo

Senior Member

Joined: Aug 2009

Posts: 1,461

From: Rochester Hills, Michigan

If you are going to replace it yourself, use antisieze on the threads, and DO NOT USE ANY SILICONE SEALANT! you'll ruin the sensor!

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