Home > Performance Aids > O2 Simulator & Tester GM 4 Wire (General Motors 1996-2003)

O2 Simulator & Tester GM 4 Wire (General Motors 1996-2003)

O2 Simulator & Tester GM 4 Wire (General Motors 1996-2003) - Click to enlargeThe O2 simulator is a plug-in replacement for the secondary O2 sensor that will provide the PCM with a signal that emulates a healthy cat for testing and off-road purposes. An extremely compact circuit board (.45 x .45 inches) is molded into the end of the connector to provide the most compact and water resistant simulator on the market.

Installs in less than 10 minutes and does not require any tools. The O2 simulator is standalone and as such does not need to be located anywhere near the exhaust system. It is further recommended that the harness connecting to the o2 simulator be coiled up and cable tied (with included cable tie) away from the hot exhaust that could damage the casing of the simulator if it comes in contact with it. Some vehicles such as F-bodies with front dual exhaust have four oxygen sensors and require two simulators per vehicle.

For off-road/competition/testing use only. Not to be used on any vehicle driven on a public road. Vehicle owners are responsible for complying with all local emissions laws. Vehicle owners accept these terms and conditions by placing their order.

Applications: Most 1996-2003 GM OBDII passenger vehicles should be able to use this configuation. Please double check your o2 sensor and compare it to the chart below to identify the type you need. Types 5 & 8 are not in use.

LS1 F-Body (Camaro/Firebird) cars use two Type 1.

PLEASE READ! Problem Vehicles: These do not work for all 2000+ full size GM trucks (Sierra, Silverado, Suburban, Tahoe). Also, the 2003 Chevy S10 and 2002 Cavalier/Grand Am. Does not work on Saturns, Fords, or Dodges.

Enter Year/Make/Model of Vehicle:
Enter Engine Size/Rating (i.e. 5.7L, 3.8L, V6):
Select Connector Type (see chart): 

o2 Simulator Connector Chart - Click to enlargeo2 Simulator Connector ChartYou want to match your o2 sensor end to one of the connector types on this chart. You will unplug the sensor from the wiring harness and plug the simulator into the wiring harness. If you no longer have your sensor, you want the simulator to be the opposite of your wiring harness. Types 1 and 3 are female connectors (have the holes for the pins), types 2 and 4 are male connectors (have metal pins down inside the tube). On types 2/4 pay attention to the plastic guide(s) inside the tube between the pins. Type 2 has a guide on one side, type 4 has guides on each side between the pins.

Factory Sensor End (type 1) - Click to enlargeFactory Sensor End (type 1)This shows a factory o2 sensor end (that has a type 1 connector). You want to look at your sensor end and match it to our chart. You want the opposite of your harness end (end that goes to computer) because you will plug what we send you into your harness end.

Type 1 - Click to enlargeType 1
Type 2 - Click to enlargeType 2
Type 4 - Click to enlargeType 4

show order | search | index | company info | privacy policy | e-mail
Copyright © 2000-2019 Afterthoughts Auto. All rights reserved.
Search our site

Like us on Facebook