CTS-V High Power Fuel Pump Driver Kit

Torqbyte Inc.

$899.00 USD 
Available May 24
Product Highlights:
  • Designed specifically for driving high-capacity, aftermarket in-tank fuel pumps without overheating the factory fuel pump control module (FPCM) in MY2009 - 2015 Cadillac CTS-V vehicles with the 6.2L V8 LSA engine.
  • PM3 is the first and only LPFP solution on the market that lets the ECM and FPCM perform complete closed-loop control of the requested fuel system pressure regardless of what aftermarket pump the user decides to install. The ability to use any aftermarket LPFP, while keeping the ECM and FPCM in complete control of its operation, is a key distinguishing feature not available with any competing solution.
  • Supports high horsepower setups by removing the traditional fueling bottleneck and permitting the fuel system to hold any ECM-requested pressure.
  • Removes the need for expensive"return" fuel systems that are difficult to install and represent a technological step backwards.
  • A truly scalable solution. A single PM3 can drive two pumps in parallel or multiple PM3s can be installed in parallel to drive banks of high-capacity pumps (e.g. in setups with surge tanks). Regardless of the preferred fuel system configuration, the ECM tuning stays in complete control of the low pressure fuel system's operation.
  • Works with any ECM tuning package, or even without any ECM tuning at all. With a PM3 you are not sacrificing future flexibility and limiting your options by using a fueling solution that forces you to use only one vendor's ECM tuning suite.
  • Compatible with voltage boosting modules and new high-voltage pumps rated for up to 20V.
  • Integrates seamlessly with the vehicle's factory systems.
  • Included Plug-n-Play harness transfers maximum power to the pumps using thick 10AWG (5.0mm^2) automotive TXL wires.
  • Reliable, easy to install and operate.
  • Overdesigned using the highest-quality automotive and industrial grade electronic components that far exceed the operating ratings and endurance of the vehicle's OEM electronic modules.
  • Built and tested in Canada.

Torqbyte PM3 is an advanced fuel pump driver module designed to overcome the challenges of increased fueling in returnless fuel injection systems where the ECM and the factory fuel pump control module (FPCM) perform closed loop control of the fuel system line pressure. In the factory configuration, the stock FPCM is only able to drive the in-tank fuel pumps the vehicle was originally equipped with. Higher capacity aftermarket in-tank fuel pumps could draw more current than the factory LPFP control module is able to supply.

CTS-V Factory Fuel System

Such aftermarket pumps can overload the factory FPCM and cause it to overheat. This overloading and overheating results in DTCs (e.g. P0231), Check Engine Light (CEL) illumination and intermittent pump operation which causes a drop in fuel line pressure thus defeating the whole purpose behind running a upgraded fuel pumps. PM3 provides the best and most effective solution to this problem.

PM3 installs between the FPCM and the upgraded fuel pumps to relieve the factory system of the current supply role. PM3 is capable of continuously supplying the aftermarket fuel pumps with up to 36A of current.

CTS-V Single PM3 Operation

For extreme set-ups, a dual PM3 setup can supply up 72A of current to the aftermarket pumps.

CTS-V Dual PM3 Setup

While the PM3 does all the heavy lifting in terms of supplying the required current to the aftermarket LPFP, its electronics replicate the exact PWM control signal being generated by the FPCM. Torqbyte's innovative technical solution implemented within the PM3 allows the ECM and FPCM to maintain full control of the aftermarket fuel system operation and maintain the closed-loop fuel pressure control mechanism that the vehicle was originally designed with. This crucial feature is something that _none_ of the other fuel control "upgrades" currently on the market are able to offer.

Plug-n-Play Harness

The supplied Plug-n-Play harness is designed to eliminate cutting, splicing or disturbing the factory wiring. It inserts in-line with the factory X420 junction located next to the EVAP canister.

CTS-V X420 Location

CTS-V X420 Location

This adapter picks up the factory fuel pump drive signals and sends them to the PM3(s) while passing through the other fuel tank signals (level, pressure, etc.)

CTS-V Plug-n-Play Harness

The Plug-n-Play adapter uses OEM GM connectors with proper wire seals and properly-crimped contact terminals. All wiring used in its construction is SAE J1127 TXL automotive wire.

Fuel Sender Connection

The factory fuel sender wiring comes with 12AWG wires. In order to minimize line losses and ensure maximum electrical power transfer to the fuel pumps, the Torqbyte kit comes with a replacement adapter equipped with SAE J1127 10AWG TXL automotive wire.

CTS-V Fuel Sender Connection

About the PM3

PM3 is easy to install and comes equipped with a built-in 40A fuse.

On the outside, Torqbyte PM3 is enclosed in a thermally-conductive, CNC machined aluminum enclosure that is hard anodized for maximum durability.

On the inside, Torqbyte PM3's electronics showcase our top two design goals: Quality and Reliability. PM3's design relies entirely on industrial-grade electronic components from the world's leading semiconductor companies including Texas Instruments, Analog Devices, Infineon Technologies, STMicroelectronics, ON Semiconductor and Vishay Intertechnology.

Torqbyte PM3 is supplied with SAE J1127 10AWG TXL automotive wire with annealed stranded copper conductors and premium-grade abrasion, chemical and moisture resistant, high temperature Crosslinked Polyethylene insulation.

FPCM Information

PM3 presents itself as a light electrical load to the FPCM. The FPCM interprets this as a system fault caused by a disconnected fuel pump (open circuit). Although there are no noticeable fueling or driveability issues, the FPCM requests a DTC which will cause the ECM to illuminate the CEL.


There are 3 options available to deal with this issue:

1. FPCM Upgrade Service

Ship your existing FPCM to Torqbyte for an upgrade procedure.

Note: It is assumed that the customer-furnished FPCM is a known-good unit. The upgrade procedure focuses only on the FPCM circuitry related to CEL illumination. We do not fully test customer-furnished FPCMs for preexisting problems, defects or unrelated faults nor do we guarantee the modified FPCM's operation beyond the scope of this upgrade. If you are unsure about the state of your FPCM, we recommend starting with a brand new FPCM.

FPCM Removal (Not Applicable to the Wagon)

If you are opting for our FPCM upgrade service, you will need to remove the FPCM from the passenger side of the trunk so you can ship it to us. DO NOT send us the plastic bracket that the FPCM snaps into. This bracket is not a part of the FPCM and is not required for this upgrade. Including it in the shipment will unnecessarily increase the shipping costs.

You must disconnect the battery, BEFORE removing or reinstalling the FPCM.

Note: Unless you are wearing a grounded wrist-strap, avoid touching any of the pins in the FPCM's connector in order to reduce the likelihood of Electrostatic Discharge (ESD) induced damage.


Shipping your FPCM to Torqbyte

Cost of shipping the module to us is the responsibility of the customer. We recommend that customers use USPS, but any carrier is acceptable. Regardless of the carrier selected, we recommend that the customer pays for a tracked service so that all parties can monitor the status of the shipment at all times.

You should ensure that the FPCM is well protected, but try to keep the package volume to a minimum to ensure your shipping costs are kept as low as possible, since shipping box volume has more impact on price than weight.

.:: Shipment Paperwork ::.

We are located in Canada. If you are sending us an FPCM from the U.S., you will probably have to fill out some additional paperwork that needs to be attached to your shipment. This paperwork is usually called a Commercial Invoice and its look and layout vary slightly from shipping company to shipping company. Here are a few examples for a few popular shipping carriers:

   Sample FedEx Paperwork

   Sample UPS Paperwork

   Sample USPS Paperwork (you must fill out a hard copy at the USPS office)

It is VERY IMPORTANT that this paperwork CLEARLY states that this is a Warranty/Service item. The value of the item should also be marked very low since this is a used item that you are not selling to us. Paperwork that fails to clearly state this is a Warranty/Service shipment or paperwork that shows a high dollar value could be regarded by customs as you having sold us an FPCM (which is not the case) and will cause the shipping company to charge us tax, duty and brokerage fees for an item that doesn't belong to us. Any such shipments will be refused and will be returned to sender at their own expense. Please contact us if you require clarification or assistance with this step.

Upgrade Turnaround Time

We perform all CTS-V FPCM upgrades within 2 business days.

FPCM Return Shipment

We charge a flat fee of $15US for return shipping via USPS (2-4 business days) and $35US for overnight shipping via DHL for destinations in the US and Canada.

2. New FPCM Purchase

Purchase a brand new modified FPCM from Torqbyte.

Note: Customers who opt for a brand new upgraded FPCM will need specify which of the three part numbers below is required and will need to have the new module installed at their local GM dealership in order to have the technicians program the new FPCM and "marry it" to the car's ECM. There will almost certainly be charge for this service, which is the sole responsibility of the customer. Customers who send us their existing module will be able to plug it back in and be up and running without requiring a trip to the dealer.


There is no warranty offered on customer-supplied FPCMs unless it can be shown that the reported issue is directly attributable to the upgrade performed by Torqbyte. We offer a full replacement warranty for a period of 30 days on brand new FPCMs procured through a local GM dealer and upgraded by Torqbyte. Before honoring any warranty claims on brand new FPCMs, we require the customer to send us the GM Service Programming System (SPS) code provided to the GM technician when the upgraded FPCM was reprogrammed (i.e. keyed to the car's ECM) at the dealership.

3. Tuning Software

Some ECM tuning software packages allow the user to disable the FPCM open-circuit DTC. If you have access to such a tuning software suite, there is no need to consider Options 1 and 2 above.


PM3 is compatible with the following GM FPCM Modules:

20759945 (Replaces 25967325)
20791901 (Replaces 20877116)
20964305 (Replaces 20964304)


More Info

Dimensions 5.0" x 3.5" x 1.25"
Weight 3 lbs
Operating Temperature -40°C to +60°C (-40°F to +140°F)

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