Washer Reservoir

This procedure covers removal and replacement of the windshield washer fluid reservoir on a 2014-2018 Chevrolet Silverado 1500 with 5.3L V8 EcoTec3 engine.

Warnings

Tools required

Parts

• Washer fluid reservoir × 1 — GM 22799190 or equivalent
• Washer pump (if damaged) × 1 — Use OEM specification
• Reservoir mounting grommet (if damaged) × 1 — Use OEM specification

Fluids

• Windshield Washer Fluid — 3.5 qt

Preparation

1. Park vehicle on level surface and engage parking brake
2. Allow engine to cool completely if vehicle was recently driven
3. Gather all tools and new parts before beginning work
4. Place drain pan under driver side front wheel well area to catch washer fluid

Procedure

1. 1

   Turn front wheels for access
   Turn the steering wheel fully to the right to expose the driver side front wheel well and provide better access to the inner fender liner area where the reservoir is located.
2. 2

   Remove inner fender liner clips
   Locate the plastic push clips securing the front portion of the driver side inner fender liner. Remove approximately 4-6 clips along the front edge of the liner using a flathead screwdriver or by pulling the center pin and then removing the clip body. Fold back the fender liner to expose the washer reservoir.
3. 3

   Disconnect washer pump electrical connector
   Locate the washer pump electrical connector on the bottom of the reservoir. Press the locking tab and pull the connector straight off the pump. If the connector is difficult to reach, you may need to feel for it by hand.
4. 4

   Disconnect washer hose
   Locate the washer fluid hose connection at the pump outlet. Squeeze the retaining tabs or use pliers to compress the hose clamp, then pull the hose straight off the pump nipple. Allow any remaining fluid to drain into the drain pan.
5. 5

   Drain remaining washer fluid
   If the reservoir still contains significant fluid, disconnect the lower drain hose (if equipped) or carefully tilt the reservoir once mounting bolts are loosened to drain fluid into the drain pan. This will make removal easier and reduce spills.
6. 6

   Remove reservoir mounting bolts
   Locate the reservoir mounting bolts at the top and bottom of the reservoir bracket. Using a 10mm socket with extension, remove the mounting bolts securing the reservoir to the inner fender structure. There are typically 2-3 bolts holding the reservoir in place.
   Torque spec

   Module Mounting Bolts8 Nm (6 lb-ft)
7. 7

   Remove washer reservoir
   Carefully maneuver the reservoir out through the wheel well opening. You may need to tilt or rotate it to clear surrounding components. Remove the reservoir from the vehicle and inspect the mounting grommets for damage.
8. 8

   Transfer washer pump to new reservoir
   If reusing the washer pump, remove it from the old reservoir by twisting counterclockwise or releasing the locking tabs (depending on design). Inspect the pump seal and grommet for damage. Install the pump into the new reservoir by pressing firmly until it seats and locks into place. Ensure the seal is properly positioned to prevent leaks.
9. 9

   Install new reservoir
   Position the new reservoir into the mounting location in the wheel well. Align the mounting holes with the bracket. Install the mounting bolts finger-tight first to ensure proper alignment, then torque to specification using a torque wrench.
   Torque spec

   Module Mounting Bolts8 Nm (6 lb-ft)
10. 10

    Reconnect washer hose and electrical connector
    Push the washer fluid hose firmly onto the pump outlet nipple until it clicks or seats completely. Ensure the retaining clip engages properly. Reconnect the electrical connector to the washer pump by pushing until you hear or feel it click into place.
11. 11

    Reinstall inner fender liner
    Position the inner fender liner back into place. Reinstall all plastic push clips by inserting the clip body into the hole, then pressing the center pin until it is flush with the clip body. Ensure the liner is properly seated along all edges.
12. 12

    Fill washer reservoir
    Open the hood and locate the washer fluid fill cap. Fill the reservoir with approximately 3.5 quarts of windshield washer fluid. Do not overfill. Replace the fill cap securely.

Reassembly

1. Ensure all electrical connectors are fully seated and locked
2. Verify all fender liner clips are properly installed to prevent rattling
3. Double-check that the washer hose is securely attached to prevent leaks

Verification

• Turn ignition to ON position without starting engine
• Activate windshield washers and verify fluid sprays properly from both nozzles
• Check for leaks around pump connections, hose connections, and reservoir body
• Listen for proper washer pump operation (should run smoothly without unusual noise)
• Verify no fluid is dripping in the wheel well area after testing
• Check that fender liner is secure and not rubbing on tire during steering

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