2020 GMC Terrain Fuel Pump Control Module Location: A Complete Guide

If you own a 2020 GMC Terrain and suspect a fuel system issue, the Fuel Pump Control Module (FPCM) is typically mounted on the left rear cargo area side panel, over the inner left (driver side) rear fender. On some GM models, it may also be located under the rear seat or near the spare tire well. This small but critical component regulates the voltage delivered to your fuel pump, and knowing exactly where to find it is the first step toward diagnosing problems like stalling, hard starting, or a no-start condition.

Understanding the Fuel Pump Control Module

The Fuel Pump Control Module is a dedicated computer that receives a signal from your engine control module to switch on and feed the fuel pump with power. Its primary job is to ensure the fuel pump receives the correct voltage so your engine gets the proper fuel pressure at all times. When the FPCM fails, it can mimic a bad fuel pump, leading to wasted time and money on unnecessary repairs.

Common Symptoms of a Failing FPCM

Before you start hunting for the module, here are the most common signs that point to a faulty FPCM on your 2020 GMC Terrain:

  • Difficulty Starting or No-Start Condition: The engine cranks but won't fire up. This can be intermittent at first.
  • Stalling While Driving: The engine may suddenly cut out, especially when you're under load or at highway speeds.
  • Engine Hesitation or Sputtering: Poor acceleration and rough idling are common.
  • Check Engine Light (CEL): Codes like P0627, P0629, P0230, or P069E often appear.
  • Fuel Pump Running Continuously: In some cases, the pump runs even when the engine is off, draining the battery.

Exact Location on the 2020 GMC Terrain

For the 2020 GMC Terrain, the FPCM is located in the rear cargo area on the driver's side. Here's how to access it:

  1. Open the rear liftgate and remove the cargo floor cover.
  2. Locate the left rear cargo area side panel. The module is mounted over the inner left (driver side) rear fender, behind the trim panel.
  3. Carefully remove the side trim panel. You may need to pull back the carpet or trim to expose the module.
  4. Look for a small rectangular box with a large electrical connector attached. This is the FPCM.

On some GM vehicles, the module is also found under the rear seat cushion or near the spare tire well. For the Terrain, the side panel location is the most common.

Important Note for Different Build Dates

If you're working on a different GM vehicle or an older model, the location may vary. For example, on vehicles built before October 2015, the FPCM is often on the floor of the vehicle. On those built after October 2015, it's typically mounted on the side panel, just behind the seat belt retractor. The 2020 Terrain follows the newer design.

How to Replace the Fuel Pump Control Module

Replacing the FPCM on a 2020 GMC Terrain is a straightforward job that many DIYers can handle. Here's a step-by-step overview:

  1. Disconnect the negative battery cable to ensure safety.
  2. Remove the rear cargo area side trim panel to access the module.
  3. Disconnect the electrical connector from the FPCM.
  4. Remove the mounting bolt (usually one or two bolts) and take out the old module.
  5. Clean the mounting surface to ensure a good ground connection.
  6. Install the new module and secure it with the bolt.
  7. Reconnect the electrical connector and test the vehicle.

Programming Requirements

Some GM vehicles require the FPCM to be programmed to your specific VIN. For the 2020 Terrain, programming is often required if you replace the module with a new OEM part. This is because the module needs to communicate with your vehicle's computer system. However, you can purchase pre-programmed units from aftermarket suppliers that are ready to install out of the box.

If you buy a pre-programmed module, you’ll need to provide your 17-digit VIN to the seller before shipping. This saves you a trip to the dealership and the high cost of programming fees.

Cost of Replacement

The cost of a fuel pump control module for a 2020 GMC Terrain varies depending on the brand and retailer. Here are some general price ranges:

  • Aftermarket Modules: $47.99 to $62.99 on Amazon.
  • OEM Genuine Parts: For the 2020 Terrain, OEM part numbers like 13558809 or 13558811 range from $59.47 to $86.95.
  • Professional Installation: If you choose to have a mechanic do the work, labor costs can add $100 to $200, bringing the total to $200 to $400 or more.

Diagnostic Tips Before Replacing

Before you replace the FPCM, it's smart to run a few basic checks to confirm it's the culprit:

  1. Scan for Diagnostic Trouble Codes (DTCs): Use an OBD-II scanner to read codes. FPCM-related codes include P069E, P0230, and P0627.
  2. Check the Fuel Pump Relay and Fuse: A bad relay can mimic FPCM symptoms.
  3. Inspect the Wiring and Connectors: Look for corrosion, damage, or loose connections at the FPCM connector.
  4. Test Fuel Pressure: Use a fuel pressure gauge to confirm the pump is getting proper voltage and pressure.

Recommended Product: KEMSO Fuel Pump

If you determine that your fuel pump itself needs replacement, consider KEMSO brand fuel pumps. KEMSO offers high-performance fuel pumps that are direct OEM replacements, ensuring a perfect fit for your 2020 GMC Terrain. Their products are built to meet or exceed factory specifications, and they come with a lifetime warranty for your peace of mind. Whether you need a complete fuel pump assembly or a standalone pump, KEMSO has you covered.

To explore their full range of fuel pumps and other performance parts, visit their website at: https://www.kemsoracing.com/

Final Thoughts

Locating the fuel pump control module on your 2020 GMC Terrain is relatively simple once you know where to look. The module is mounted on the left rear cargo area side panel, behind the trim. Always start with a proper diagnosis before replacing any parts, and if you need a new fuel pump, KEMSO offers a reliable, high-performance option with a lifetime warranty.

For more information on KEMSO fuel pumps and other automotive products, visit: https://www.kemsoracing.com/


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