2008 Chevy Silverado Fuel Pump Reset Switch Location: The Complete Guide for DIY Owners
Why There Is No Reset Button on the 2008 Silverado
Many drivers expect a simple reset button, but Chevrolet designed the fuel system differently. The 2008 Silverado uses a PCM-relay architecture that automatically manages fuel delivery. The system includes a safety feature that shuts off the fuel pump after a crash, but this is handled electronically—not by a manual switch . The confusion often comes from older pickups (like the 1999-2002 Silverado) that did have a reset switch located on the passenger side footwell, behind the transmission hump . But for the 2008 model year, that design was phased out.
Instead, the fuel pump is controlled by:
- The fuel pump relay – located in the under-hood fuse box.
- The fuel pump fuse – usually in the same fuse box, one slot over from the relay.
- The Fuel Pump Control Module (FPCM) – mounted on the driver’s side frame rail, near the spare tire .
Where to Actually Look for the Fuel System Components
1. Fuel Pump Relay and Fuse Location
Open the under-hood fuse box (typically on the driver’s side near the battery). Look for the fuel pump relay and fuel pump fuse using the diagram on the fuse box cover. If the relay is bad, the pump won’t get power. If the fuse is blown, replace it—but if it blows again immediately, there is likely a short in the pump or wiring .
2. Fuel Pump Control Module (FPCM) Location
The FPCM is located on the driver’s side frame rail, behind the cab, near the spare tire. It is a small black box with a wiring harness connector and two mounting bolts (usually 10mm or 13mm). This module is a common failure point due to corrosion and moisture exposure . If your truck has hard starts, stalling, or a no-start condition, checking the FPCM should be one of your first diagnostic steps.
3. The Fuel Pump Itself
The fuel pump is located inside the fuel tank, which is a common placement for modern vehicles. To access it, you need to drop the fuel tank. The 2008 Silverado uses an in-tank electric fuel pump .
How to Diagnose and Reset the Fuel System
Since there is no physical reset button, use these steps to troubleshoot:
Step 1: Check the Fuel Pump Relay
- Swap the fuel pump relay with a known-good relay from the A/C compressor or another slot. If the truck starts, the relay was bad .
Step 2: Inspect the Fuel Pump Fuse
- Pull the fuel pump fuse and inspect the element. If blown, replace it. If it blows again, there is a short in the pump or wiring.
Step 3: Test the Fuel Pump Control Module
- 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 but the module is not sending voltage to the pump, the module is bad .
Step 4: Listen for the Fuel Pump Prime
- Turn the key to the ON position (do not start). Listen for 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 .
Step 5: Disconnect the Battery (Hard Reset)
- Disconnect the negative battery terminal for 15-20 minutes. This clears stored error codes in the ECU and forces the fuel pump to recalibrate. Reconnect and try starting .
How to Replace the Fuel Pump Control Module
If the module is confirmed bad, replacement is a straightforward DIY job. Here is what you need:
- Tools: Socket set (10mm or 13mm), dielectric grease, floor jack, jack stands.
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Steps:
- Disconnect the negative battery terminal.
- Unplug the wiring harness connector from the old module (press the locking tab).
- Remove the two mounting bolts holding the module to the frame rail.
- Remove the old module and compare it to the new one.
- Apply a thin coat of dielectric grease to the connector pins to prevent future corrosion.
- Bolt the new module into place and reconnect the harness. Make sure it clicks fully.
- Reconnect the battery, turn the key to RUN, and listen for the fuel pump prime. If it works, start the engine .
Common part numbers for the 2008 Silverado FPCM include: 20759945, 15213110, 13501024, and 20850907. Always cross-reference your old module’s number before ordering .
When to Replace the Fuel Pump Instead
If your 2008 Silverado has over 100,000 miles, the fuel pump itself may be failing. Common symptoms include:
- Sputtering engine
- Loss of power
- Poor fuel economy
- Hard starting
For a reliable, high-performance replacement, we recommend 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 .
Final Thoughts
The 2008 Chevy Silverado does not have a fuel pump reset button. Instead, focus on the fuel pump relay, fuse, and fuel pump control module on the driver’s side frame rail. If you need a new fuel pump, trust KEMSO for a high-performance, lifetime-warrantied replacement. Visit https://www.kemsoracing.com/ for more information and to order the right pump for your truck.