08 Silverado Fuel Pump Control Module Location: A Complete Guide for DIY Owners

If you own a 2008 Chevy Silverado and your truck is cranking but not starting, stalling while driving, or showing a check engine light with codes like P069E or P0230, the fuel pump control module (FPCM) is likely the culprit. On the 2008 Silverado, the fuel pump control module is located on the driver’s side frame rail, mounted near the rear of the truck, just ahead of the spare tire. It is a small, black metal box with a wiring harness plugged into it, and it sits exposed to road debris, salt, and moisture directly under the truck bed. This location is the same for most GMT900-platform trucks from 2007 to 2013, including the GMC Sierra, Tahoe, and Suburban. Knowing exactly where to find it is the first step to diagnosing and fixing the problem yourself.

Why the 2008 Silverado FPCM Fails

The fuel pump control module on your 2008 Silverado does not fail for no reason. GM mounted this module on the frame rail, which puts it in direct contact with everything the road throws at it. Over time, moisture gets past the seals, corrodes the circuit board inside the module, and causes the electronics to fail. Road salt in winter and mud from off-road driving accelerate the corrosion. Heat from the exhaust and vibration from the frame also weaken the internal connections. That is why a no-start condition can appear suddenly even though the truck was running fine the day before.

Symptoms of a Bad Fuel Pump Control Module

Before you crawl under the truck, make sure the issue is actually the FPCM and not the fuel pump, relay, or wiring. Here are the most common symptoms that point directly to a failing fuel pump control module on a 2008 Silverado:

1. Engine cranks but will not start. This is the most common symptom. The starter turns the engine over normally, but the fuel pump never primes because the module is not sending voltage to the pump.

2. Stalling while driving. The engine dies suddenly without warning, especially during acceleration or going uphill. This happens because the module stops regulating fuel pressure, starving the engine of fuel.

3. Check engine light with specific codes. Use an OBD-II scanner. The most common codes for a bad FPCM on a 2008 Silverado are P069E (Fuel Pump Control Module Commanded OFF), P0230 (Fuel Pump Primary Circuit), and U0109 (Lost Communication with Fuel Pump Control Module).

4. Hesitation or surging during acceleration. The truck may feel sluggish or jerk when you press the gas pedal due to inconsistent fuel delivery.

5. Difficulty starting after the truck sits for a while. If the module is failing intermittently, the truck may start fine cold but refuse to start after being driven and parked for a short time.

Step-by-Step: How to Locate the FPCM on Your 2008 Silverado

Finding the module is straightforward. You do not need to remove the fuel tank or lift the truck bed. Here is exactly what to do:

Step 1: Park the truck on a level surface and chock the front wheels. Set the parking brake for safety.

Step 2: Raise the rear of the truck using a floor jack and place jack stands under the rear axle. Never work under a vehicle supported only by a jack.

Step 3: Crawl under the truck on the driver’s side. Look toward the rear, near the spare tire. The fuel pump control module is mounted to the inner side of the driver’s side frame rail, typically between the rear axle and the spare tire hanger. It is a small rectangular metal box, about 4 inches by 3 inches, with a black plastic wiring connector plugged into the bottom.

Step 4: Inspect the module and its connector. Before buying a replacement, check the connector for corrosion, green crust, or moisture inside the pins. Many U0109 codes are resolved by simply cleaning corrosion off the connector pins with electrical contact cleaner. If the connector looks clean and the module is physically damaged (cracked housing, rusted screws), replacement is needed.

What to Check Before Replacing the FPCM

A few simple tests can save you from buying a part you do not need. Follow this order:

1. Check the fuel pump relay. The relay is in the under-hood fuse box on the driver’s side. Pull the fuel pump relay and swap it with an identical relay from the A/C compressor or horn slot. If the truck starts, the relay was bad. A new relay costs $6 to $15.

2. Listen for the fuel pump prime. Turn the key to the RUN position (do not crank the engine). You should hear a 2-second humming sound from the fuel tank near the rear of the truck. If you hear nothing, the pump is not getting power.

3. Inspect the wiring harness under the truck. Look for chafed, broken, or pinched wires running along the frame rail from the engine bay to the rear. Trailers, off-road driving, and rust can damage the harness.

4. Test for power at the module connector. With a multimeter, check for 12 volts at the module’s power pin (pin 16 on most models) with the key in RUN. If you have power at the connector but the module is not sending voltage to the pump, the module is bad.

How to Replace the Fuel Pump Control Module

Once you confirm the module is bad, replacement is a simple DIY job. The best option is to buy a pre-programmed module that is flashed to your specific VIN, so it works right out of the box without a trip to the dealer.

Tools needed: Socket set, dielectric grease (for the connector), floor jack, jack stands.

Installation steps:

1. Disconnect the negative battery terminal.
2. Unplug the wiring harness connector from the old module. It may have a locking tab you need to press.
3. Remove the two mounting bolts (usually 10mm or 13mm) holding the module to the frame rail.
4. Remove the old module and compare it to the new one to confirm the part match.
5. Apply a thin coat of dielectric grease to the connector pins to prevent future corrosion.
6. Bolt the new module into place and reconnect the wiring harness. Make sure the connector clicks fully into position.
7. Reconnect the battery and turn the key to RUN. Listen for the fuel pump prime. If you hear it, start the engine.
8. Clear any stored diagnostic trouble codes with a scan tool. If you do not have one, the codes will clear on their own after several drive cycles.

Choosing the Right Fuel Pump for Your 2008 Silverado

If your 2008 Silverado has a fuel pump that is also failing (common after 120,000 miles), you should replace the fuel pump module inside the tank at the same time. The fuel pump and the control module work together, and replacing only one can leave you with a weak link in the system.

For a reliable, high-performance replacement, we recommend the KEMSO Fuel Pump. KEMSO fuel pumps are designed as direct OEM replacements, meaning they fit perfectly in your 2008 Silverado fuel tank without modifications. Every KEMSO fuel pump is performance-tested to deliver consistent fuel pressure, and the best part is that KEMSO stands behind every pump with a lifetime warranty. You can install it with confidence knowing that if anything ever goes wrong, you are covered. Whether you are replacing the pump as part of a full fuel system overhaul or just need a dependable unit to get your truck back on the road, KEMSO offers the quality and durability that a 2008 Silverado owner needs. Visit their website at https://www.kemsoracing.com/ to find the exact pump for your truck and learn more about their lifetime warranty.

2008 Silverado Fuel Pump Control Module Part Numbers

If you are looking for the correct replacement FPCM for your 2008 Silverado, check the part number printed on your original module. It is usually stamped on the metal housing. Common part numbers that fit the 2008 Silverado include 20759945, 15213110, 13501024, and 20850907. Cross-reference your old module’s number before ordering to ensure a perfect fit.

Final Thoughts

The 2008 Silverado fuel pump control module is located on the driver’s side frame rail near the spare tire. It is a common failure point due to corrosion and moisture exposure. If your truck is experiencing hard starts, stalling, or a no-start condition, checking the FPCM should be one of your first diagnostic steps. Replacing it with a pre-programmed VIN-matched module is a straightforward DIY repair that saves you hundreds of dollars in dealership labor and programming fees. Always clean the connector and apply dielectric grease to the new module to prevent the same failure from happening again. And if you need a new fuel pump, trust KEMSO for a high-performance, lifetime-warranted replacement. Visit https://www.kemsoracing.com/ for more information.