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GM Installation and FAQs

Flex Fuel Sensor Replicator - GM

 If you need to replace the flex fuel sensor (GM Part No. 12570260 or GM Part No. 12568450) on your General Motors flex fuel vehicle, now is the time to buy a Flex Fuel Sensor Replicator that offers many advantages over replacing an OEM flex fuel sensor. 

What GM vehicles will the Replicator work on?

 

Model

Years

 

 

Make

 

 

Models

 

 

Engine

VIN 8th Digit

 

Location of

OEM Sensor

2000 - 2002

Chevy

S-10

2.2 L

5

Passenger side, front frame rail, behind wheel well

2000 - 2002

GMC

Sonoma

2.2 L

5

Passenger side, front frame rail, behind wheel well

2003

Chevy

S-10

2.2 L

H

Passenger side, front frame rail, behind wheel well

2003

GMC

Sonoma

2.2 L

H

Passenger side, front frame rail, behind wheel well

2002 - 2005

Chevy

Trucks, Suburban, Tahoe

5.3 L

Z

Mounted to frame directly under driver’s feet

2002 - 2005

GMC

Trucks, Yukon, Tahoe

5.3 L

Z

Mounted to frame directly under driver’s feet

 

Installation instruction tips:

With the ignition key on, engine NOT running.

Looking into the vehicle connector with the locking tab up. Both GM and Ford vehicles:



Check for 5 volts on PIN A.     Check for 12 volts on PIN B     PIN C is common.

IF any of the above voltage checks fail, the Replicator will not clear the engine codes.   Check for wiring issues.

 

General:

1.)    DISCONNECT THE BATTERY with the ignition key off and out.

2.)    Disconnect the flex fuel sensor on the vehicle.

3.)    Always mount the Replicator away from heat sources and inside the frame rail of the vehicle where it will be protected from water and flying debri.

GM vehicles:

 

A.)  Install the Replicator by connecting the male plug on the Replicator to the female plug on the vehicle wiring harness.  Make sure that the locking tab on the vehicle wiring harness latches completely on the Replicator latch tab.  This will ensure that you have a weather proof connection and the Replicator will not become disconnected during vehicle operation.

 

B.)  Attach the Replicator to the vehicle using the supplied wire ties.  On Suburbans the Replicator can be attached to the fuel lines.  On S-10s a convenient mounting location is the oil dipstick tube. 

 

 

 

The OBD II engine code will clear after installation of the Replicator if you have disconnected the battery during installation.  If you did not disconnect the battery, it will take approximately 30 minutes or 30 miles for the engine code to clear.

 

If any other OBD II codes were present before installing the Replicator, they may still be present after installation.

 

Frequently Asked Questions:

 

Q:  Will the engine codes go away after installing the flex fuel replicator?

A:  The codes associated with the flex fuel sensor will clear if you disconnected the battery during installation.  Otherwise, it will clear after about 30 minutes of operation or 30 miles.  It will only clear engine codes PO176,177,178 and 179.

 

Q:  The housing on my flex fuel sensor is leaking.   Can I bypass the sensor after installing a Flex Fuel replicator?

A:  You can bypass the original sensor after installing the Flex Fuel Replicator.  The original sensor no longer has any functionality

 

Q:  Do I have to remove the original sensor when installing a Flex Fuel Replicator?

A:  No you do not, fuel still passes throught the old sensor housing.  If the original sensor is leaking fuel, you will want to bypass it though.

 

Q:  Is it illegal to alter the OEM flex fuel sensor?
A:  No it is not illegal.  The flex fuel sensor is a part of the fuel delivery system.  It is not a part of the emission system.

Q:  What limitations does my vehicle have after installing the Replicator?
A: The only limitation you have is that your car will not be able to burn alternate fuels like E85 with a standard Replicator installed.  You must burn good old fashioned unleaded gasoline that may contain up to 10% ethenol.

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