How to Replace the Fuel Pump on a 2015-2020 GMC Canyon 2.5L (Engine: Inline 4 2.5L)
Step-by-step in-tank fuel pump module guide with tools, parts, torque specs, and safety tips for 2015, 2016, 2017, 2018, 2019, 2020
How to Replace the Fuel Pump on a 2015-2020 GMC Canyon 2.5L (Engine: Inline 4 2.5L)
Step-by-step in-tank fuel pump module guide with tools, parts, torque specs, and safety tips for 2015, 2016, 2017, 2018, 2019, 2020
๐ง Canyon - Fuel Pump Replacement
On your Canyon, the electric fuel pump is part of the in-tank fuel pump module. Replacing it means relieving fuel pressure, safely accessing the top of the fuel tank, removing the pump module, and installing a new sealed module assembly.
Difficulty Level: Advanced | Estimated Time: 3-5 hours
Assumption: This procedure covers the stock in-tank fuel pump module on the 2.5L gasoline Canyon.
โ ๏ธ Safety & Precautions
- ๐ฅ Gasoline vapors ignite easily. Work outside or in a very well-ventilated area away from flames, sparks, heaters, and smoking.
- ๐งฏ Keep a Class B fire extinguisher nearby.
- ๐งค Wear fuel-resistant gloves and safety glasses.
- ๐ Disconnect the negative battery cable before opening the fuel system.
- โฝ Relieve fuel pressure before disconnecting any fuel line.
- ๐ซ Do not use power tools near open fuel vapors.
- โ ๏ธ Support the fuel tank with a transmission jack or floor jack before removing tank straps.
- ๐ Fuel line quick-connects use plastic retainers. Do not pry hard or break them.
๐ง Required Tools
You'll need the following tools for this repair:
- 10mm socket
- 13mm socket
- 15mm socket
- 3/8-inch drive ratchet
- 3/8-inch drive extension set
- Torque wrench 10-100 ft-lbs
- Fuel line disconnect tool set (specialty)
- Fuel pump lock ring tool (specialty)
- Flat-blade screwdriver
- Trim clip removal tool
- Needle-nose pliers
- Floor jack (rated 3-ton minimum)
- Jack stands (rated 3-ton minimum)
- Transmission jack or fuel tank support adapter (specialty)
- Wheel chocks
- Shop towels
- Drain pan
- Brass punch
- Rubber mallet
- Fuel-resistant gloves
- Safety glasses
- Class B fire extinguisher
A fuel line disconnect tool releases the spring lock inside the fuel hose fitting without damaging it. A fuel pump lock ring tool safely turns the large retaining ring that holds the pump in the tank.
๐ฉ Required Parts
HowToo sells all the parts you need for this repair:
- Fuel pump module assembly - Qty: 1
- Fuel pump tank seal/O-ring - Qty: 1
- Fuel pump lock ring - Qty: 1
- Fuel line retainer clips - Qty: As needed
- Fuel system cleaner - Qty: 1 bottle
๐ Before You Begin
- ๐ ฟ๏ธ Park your Canyon on level ground and set the parking brake.
- ๐งฑ Place wheel chocks at the front wheels.
- โฝ Run the fuel tank as low as possible before starting. A nearly empty tank is much safer and easier to lower.
- ๐ Save any radio presets if needed, then disconnect the negative battery cable with a 10mm socket.
- ๐งฐ Keep shop towels ready. A small amount of fuel may spill when lines are disconnected.
๐จ Step-by-Step Instructions
Follow these steps in order:
Step 1: Relieve Fuel Pressure
- Open the hood and locate the underhood fuse box.
- Use the fuse box cover diagram to identify the fuel pump fuse or relay.
- Use needle-nose pliers to remove the fuel pump fuse or relay.
- Start the engine and let it run until it stalls.
- Crank the engine for 3-5 seconds with the key or start button to remove leftover pressure.
- Turn the ignition off.
- Less pressure means less fuel spray.
Step 2: Disconnect the Battery
- Use a 10mm socket to loosen the negative battery terminal clamp.
- Remove the negative cable from the battery and move it aside so it cannot touch the post.
- This prevents sparks while the fuel system is open.
Step 3: Raise and Support the Truck
- Use a floor jack rated 3-ton minimum to lift the rear of your Canyon at the approved rear lift point.
- Place jack stands rated 3-ton minimum under the frame rails.
- Lower the truck gently onto the jack stands.
- Shake the truck lightly by hand to confirm it is stable before going underneath.
Step 4: Support the Fuel Tank
- Position a transmission jack or fuel tank support adapter under the fuel tank.
- If using a floor jack, place a wide wood block between the jack and tank to spread the load.
- Raise the jack until it lightly supports the tank. Do not crush the tank.
Step 5: Remove Nearby Shields or Brackets
- Use a 13mm socket or 15mm socket to remove any fuel tank shield or bracket fasteners blocking access.
- Use a trim clip removal tool if plastic retainers are installed.
- Set the hardware aside in order so it goes back in the same location.
Step 6: Disconnect Fuel Filler and Vent Hoses
- At the fuel tank neck area, loosen the hose clamps with a flat-blade screwdriver if clamp screws are used.
- If spring clamps are used, squeeze them with needle-nose pliers and slide them back.
- Twist the filler hose gently by hand and pull it off the tank neck.
- Remove the smaller vent hose the same way.
- Twist first, then pull gently.
Step 7: Disconnect Electrical Connectors and Fuel Lines
- Lower the tank a few inches with the transmission jack or floor jack only enough to reach the top connections.
- Press the locking tab on the fuel pump electrical connector and unplug it by hand.
- Use a fuel line disconnect tool set to release the fuel supply line quick-connect fitting.
- Wrap the fitting with shop towels while disconnecting to catch fuel drips.
- Use a drain pan under the connection area.
- Disconnect the EVAP vapor line quick-connect by pressing its tabs or using the correct size from the fuel line disconnect tool set.
Step 8: Remove the Fuel Tank Straps
- Confirm the tank is fully supported by the jack.
- Use a 15mm socket, 3/8-inch drive ratchet, and 3/8-inch drive extension to remove the fuel tank strap bolts.
- Lower the straps away from the tank.
- Carefully lower the tank with the jack.
- Watch for any hose or wire still attached. Stop immediately if anything catches.
Step 9: Clean the Top of the Fuel Tank
- Use shop towels to wipe dirt from the top of the tank around the fuel pump module.
- Do not let dirt fall into the tank opening.
- Cleanliness protects the new pump.
Step 10: Remove the Fuel Pump Lock Ring
- Use the fuel pump lock ring tool to rotate the lock ring counterclockwise until it releases.
- If needed, use a brass punch and rubber mallet to tap the lock ring loose.
- Do not use a steel punch because it can create sparks.
- Lift the lock ring off the pump module.
Step 11: Remove the Old Fuel Pump Module
- Lift the fuel pump module straight up by hand.
- Tilt it slowly to clear the fuel level float arm. The float arm is the small lever that measures fuel level.
- Let fuel drain from the module into the tank before removing it completely.
- Place the old module in a drain pan.
- Remove and discard the old tank seal/O-ring by hand.
Step 12: Install the New Seal and Pump Module
- Wipe the tank sealing surface with shop towels.
- Install the new fuel pump tank seal/O-ring into the tank groove.
- Lower the new fuel pump module into the tank by hand.
- Guide the fuel level float arm carefully so it does not bend.
- Align the module marks with the tank marks.
Step 13: Install the Lock Ring
- Install the new fuel pump lock ring over the module.
- Use the fuel pump lock ring tool to rotate the ring clockwise until fully seated against the stops.
- If using a brass punch and rubber mallet, tap gently and evenly.
- The ring must be fully locked or fuel vapors and leaks can occur.
Step 14: Raise the Tank and Reconnect Lines
- Use the transmission jack or floor jack to raise the tank partway into position.
- Reconnect the fuel pump electrical connector by hand until it clicks.
- Push the fuel supply line onto the pump fitting until it clicks.
- Reconnect the EVAP vapor line by hand until it clicks.
- Gently pull each line by hand to confirm it is locked.
Step 15: Reinstall the Tank Straps
- Raise the tank fully into position with the transmission jack or floor jack.
- Install the fuel tank straps by hand first to avoid cross-threading.
- Use a 15mm socket and torque wrench 10-100 ft-lbs to tighten the strap bolts.
- Torque to 40 Nm (30 ft-lbs) unless the service label or replacement hardware specifies otherwise.
Step 16: Reconnect Filler and Vent Hoses
- Slide the fuel filler hose fully onto the tank neck by hand.
- Slide the vent hose fully onto its fitting by hand.
- Use a flat-blade screwdriver to tighten screw clamps securely.
- If spring clamps are used, position them with needle-nose pliers in their original locations.
Step 17: Reinstall Shields and Lower the Truck
- Use a 13mm socket or 15mm socket to reinstall any removed shields or brackets.
- Use a trim clip removal tool by hand to reinstall plastic retainers if removed.
- Raise the truck slightly with the floor jack rated 3-ton minimum.
- Remove the jack stands rated 3-ton minimum.
- Lower the truck fully to the ground.
Step 18: Reconnect Battery and Prime the Fuel System
- Reinstall the fuel pump fuse or relay by hand.
- Reconnect the negative battery cable.
- Use a 10mm socket to snug the negative terminal clamp.
- Turn the ignition to ON for 5 seconds without starting.
- Turn it OFF for 10 seconds.
- Repeat this ON/OFF cycle 3 times to prime the fuel system.
- Start the engine and let it idle.
โ After Repair
- ๐ Check carefully for fuel smell around the tank and fuel line connections.
- ๐ฆ Look under your Canyon with a flashlight and confirm there are no fuel leaks.
- โฝ Add fresh gasoline if the tank was very low.
- ๐ Road test gently for 5-10 minutes, then recheck for leaks.
- ๐ Confirm the fuel gauge reads correctly after adding fuel.
- โ ๏ธ If the engine cranks but does not start, stop and recheck the fuel pump connector, fuse, relay, and fuel line seating.
๐ฐ DIY vs Shop Cost
Shop Cost: $850-$1,300 (parts + labor)
DIY Cost: $250-$550 (parts only)
You Save: $600-$750 by doing it yourself!
Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2.5-4.0 hours.
๐ฏ Ready to get started?
HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.









