Question about 1991 GMC Sierra

1 Answer

Oxgen sensor broke out of pipe

'not the original engine, standard 4x4 w/ dual exhaust
wher are #'s i might need to find replacment parts

Posted by on


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 98 Answers

The only thing you need to be concerned with is the amount of wires that go to the oxygen sensor, you state that it is not the original engine but I assume that you still are using the original loom and computer control system for your truck and if so you can reference the oxygen sensor connector.. Will have to use same oxygen sensor for original engine....Good Luck

Posted on Jan 07, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

How many oxgen sensor has ford explorer 1997 un sohc 4.l v6

has 4
2 heated oxygen sensors(HO2S)( one in each exhaust manifold before the cat converters to read the exhaust gas composition so that the ECM can adjust the air/fuel mixture) and 2 oxygen sensors(O2) ( one in each exhaust pipe after the cat converter to read the cats performance and to final tune the air/fuel mixture

Feb 17, 2018 | Ford Cars & Trucks

1 Answer

Where is o2 sensor

You have not identified the vehicle and the locations are vehicle specific.

There is more than one sensor.

Typically on a single exhaust engine there will be one on the exhaust pipe running off the exhaust manifold and a second sensor on the exhaust behind the catalytic converter.

On a V6 or V8 engine with dual exhausts, typically there will be 4 sensors - one on each exhaust pipe leading off each exhaust manifold and one on each exhaust pipe after each of the catalytic converters.

Apr 25, 2016 | Cars & Trucks

1 Answer

Replace oxygen sensor

oxygen sensor is located in the exhaust pipe just as it leaves the engine, it monitors the exhaust gas as it exits the engine, look down between the back of engine and the firewall. peek-a-boo ! some cars have (2) one @ the exh. pipe before the CATalitc converter. use a 7/8 " wrench, wd 40 will help also. tight is tight too tight is broke.

Jan 15, 2013 | 2000 Chrysler Cirrus

1 Answer

Where is the oxegen sensor

O2 Sensors are in the exhaust system

In the pipe from the engine to the exhaust converter
or in the converter inlet

That is the upstream sensor, used to control the
fuel injection pulse width or fuel trim.

There are other downstream O2 sensors, called monitors,
that don't get replaced unless they fail

The ones closest to the engine get replaced at 100,000
miles, on all vehicles

A Sensor Code does not mean anything failed or
needs replacing

You need the codes & have to test to find a solution

Some vehicles have 4 sensors,if they have dual exhaust

May 18, 2012 | 1997 Oldsmobile Cutlass Supreme

1 Answer

2002 Dodge ram 1500 5.9L oxgen sensor bank 1 sensor 1 where is that sensor

The oxygen sensor is located on the exhaust manifold or directly after that on the exhaust pipe close to the engine.

Sep 17, 2010 | Dodge Ram 1500 Cars & Trucks

1 Answer

I broke a sensor just under the coolent temp sensor but i cant find what that sensor is called help would be awesome

Hello, The only sensor close to the coolant senor (driver back side of the engine) is the oxgen sensor, it screws into the exhaust manifold. (A 4 cylinder engine)

Sep 06, 2010 | 1993 Saturn SW2

1 Answer

Wher is the main high voltage o2 sensor located?

The sensor is the one that is ahead of the catalytic converter,in the exhaust pipe that leaves the exhaust manifold,right side of the engine,first pipe you come to.

Sep 01, 2010 | 1998 GMC Jimmy

2 Answers

Senor oxgen 2nd bank downstream Where are they located

you have 4 o2 sensors and 4 catylitic converters. bank 1 sensors are located on the passenger side exhaust. #1 is before the catylitic converters and #2 is after. bank two, on the drivers side, has the same configuration, the downstream sensor is after the cats.

May 20, 2010 | 2001 Mercury Grand Marquis

2 Answers

How to remove and install new oxgen sensors on a

Stop by your local auto parts store and ask how many oxygen sensors the Honda Civic has installed. They are usually installed on the exhaust pipe before the catalytic convertor, and screw off with an open-end wrench. The heat causes the sensor to be a bit difficult to remove, and you will need to put some anti-seize compound on the threads of the new sensors. Most cars have 2 or 3 oxygen sensors.

Your local AutoZone can also put the diagnostic computer on you car which should indicate whether its actually a bad oxygen sensor, or they will read the error codes to tell you what the problem really is. Best of all, it's FREE.

Jun 11, 2009 | 2001 Honda Civic

3 Answers

Check engine light is 1 sensor1 oxygen sensor

if u have one oxygen sensor then u need to take a deep look at the bottom of ur car it will be somewhere at the Exhaust pipe if u have a catalytic converter then u will have two oxygen sensors one before the catalytic converter & the other will be after the catalytic converter. Note: the catalytic converter is located at after a little bit of beginning in Exhaust pipe.

Jun 06, 2009 | Dodge Grand Caravan Cars & Trucks

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

66 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts


Level 3 Expert

78238 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides