Wiper System & Washer System Buick Rendezvous I

Fastener Tightening Specifications

Fastener Tightening Specifications

Scheme 1

Scheme 2

Scheme 3

Scheme 4

Scheme 5

Wiper/Washer System Connector End Views

I/P Switch Assembly C1 (Buick) Connector End Connector Part Information 12041301 8-Way F Metri-Pack 280 (BLK) Pin Wire Color Circuit No. Function A GRY 8 Instrument Panel Lamp Supply Voltage B BLK 1450 Ground C-E - - Not Used F GRY 391 Rear Window Wiper Switch Signal G YEL 343 Accessory Voltage H DK GRN 392 Rear Window Washer Pump Control

Rear Window Washer Fluid Pump (Buick) Connector End Connector Part Information 12020599 2-Way F Metri-Pack 280 (BLK) Pin Wire Color Circuit No. Function A DK GRN 392 Rear Window Washer Pump Control B BLK 1650 Ground

Rear Window Wiper Motor (Buick) Connector End Connector Part Information 12041429 5-Way F Metri-Pack 280 (BLK) Pin Wire Color Circuit No. Function A BLK 1150 Ground B DK GRN 392 Rear Window Washer Pump Control C - - Not Used D GRY 391 Rear Window Wiper Switch Signal E YEL 343 Accessory Voltage

Windshield Washer Fluid Level Switch Connector End Connector Part Information 12162195 2-Way F 150.2 (BLK) Pin Wire Color Circuit No. Function A TAN 185 Low Washer Fluid Indicator Signal B BLK 1550 Ground

Windshield Washer Fluid Pump Connector End Connector Part Information 12052641 2-Way F Metri-Pack 150 (BLK) Pin Wire Color Circuit No. Function A RED 228 Windshield Washer Pump Control B BLK 1650 Ground

Windshield Wiper Motor Connector End Connector Part Information 12129126 5-Way F Metri-Pack 150 280 Mixed Sealed (BLK) Pin Wire Color Circuit No. Function A BLK 1650 Ground B YEL 243 Accessory Voltage C PPL 92 Windshield Wiper Motor High Speed D DK GRN 113 Windshield Wiper Switch Signal 2 E GRY 112 Windshield Wiper Switch Signal 1

Turn Signal/Multifunction Switch C3 Connector End Connector Part Information 15339058 7-Way F Metri-Pack 150 (GRY) Pin Wire Color Circuit No. Function G-H - - Not Used J RED 228 Windshield Washer Pump Control K YEL 243 Accessory Voltage L GRY 112 Windshield Wiper Switch Signal 1 M DK GRN 113 Windshield Wiper Switch Signal 2 N PPL 92 Windshield Wiper Motor High Speed

Diagnostic Starting Point - Wiper/Washer Systems

Begin the system diagnosis by reviewing the system Description and Operation. Reviewing the Description and Operation information will help you determine the correct symptom diagnostic procedure when a malfunction exists. Reviewing the Description and Operation information will also help you determine if the condition described by the customer is normal operation. Refer to Symptoms - Wiper/Washer Systems in order to identify the correct procedure for diagnosing the system and where the procedure is located.

Symptoms - Wiper/Washer Systems

1. «Wiper/Washer System Description and Operation»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system)
2. «Rear Wiper/Washer System Description and Operation»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system)

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the Windshield Wiper/Washer System. Refer to «Checking Aftermarket Accessories»(/buick/rendezvous/i-2001-2007/remont/body-electrical/#wiring-systems-diagnostic-information-and-procedures__checking-aftermarket-accessories) in Wiring Systems.
2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
3. Inspect the washer fluid reservoir for the proper fluid level.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

1. «Low Washer Fluid Indicator Malfunction»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system__low-washer-fluid-indicator-malfunction)
2. «Washers Always On»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system)
3. «Washers Inoperative»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system__washers-inoperative)
4. «Wipers Always On»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system)
5. «Wipers Inoperative - All Modes»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system__wipers-inoperative-all-modes)
6. «Wipers Inoperative - One or More Modes»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system)
7. «Washer Inoperative - Rear»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system__washer-inoperative-rear)
8. «Wiper Always On - Rear»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system__wiper-always-on-rear)
9. «Wiper Inoperative - Rear»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system__wiper-inoperative-rear)

Low Washer Fluid Indicator Malfunction

Low Washer Fluid Indicator Malfunction

Test Description

The number below refers to the step number on the diagnostic table.

1. 3: Tests for an internal fault in the windshield wiper/washer switch.

Washers Always On

Washers Inoperative

Washers Inoperative

The number below refers to the step number on the diagnostic table.

1. 3: Tests for an internal fault in the windshield wiper/washer switch.

Wipers Always On

Wipers Inoperative - All Modes

Wipers Inoperative - All Modes

The numbers below refer to the step numbers on the diagnostic table.

1. 8: This step tests for continuity through the 24K ohms resistor in the windshield wiper/washer switch. The connector behind the instrument panel knee bolster is suitable for performing this step.
2. 9: This step tests for continuity through the delay resistors in the windshield wiper/washer switch. The measured resistance will change in sequence from high to low as the delay speed is increased. The connector behind the instrument panel knee bolster is suitable for performing this step.

Wipers Inoperative - One or More Modes

Washer Inoperative - Rear

Washer Inoperative - Rear

Wiper Always On - Rear

Wiper Always On - Rear

Wiper Inoperative - Rear

Wiper Inoperative - Rear

Scheme 6

1. Run the wiper arms to the mid-wipe position.
2. Remove the wiper blades from the wiper arms. Refer to «Wiper Arm Blade Replacement»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .
3. Attach a scale to the end of the wiper arm and measure the force required to lift the wiper arm perpendicular to the windshield to normal working height (height with the blade attached).
4. Replace the wiper arm if the measurement is not within the specification. Refer to «Wiper Arm Replacement»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) . Tip Pressure: 9-11 Newtons (32-40 Ounces)

Scheme 7

1. Remove the wiper blades from the wiper arms. Refer to «Wiper Arm Blade Replacement»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .
2. Look down the length of the blade element.
3. Replace the wiper blade element if the rubber element which contacts the glass is not on the centerline of the blade +/-15 degrees. Refer to «Wiper Blade Element Replacement»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system__wiper-blade-element-replacement) .
4. Install the wiper blades on the wiper arms. Refer to «Wiper Arm Blade Replacement»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .

Removal Procedure

1. Remove the battery. Refer to «Battery Replacement»(/buick/rendezvous/i-2001-2007/remont/charging-system/#battery-charging-system-and-starting-system__battery-replacement) in Engine Electrical.
2. Drain the washer solvent from the washer solvent container.
3. Disconnect the washer solvent container level sensor electrical connector.
4. Disconnect the rear washer pump electrical connector if equipped.
5. Disconnect the washer hose from the rear washer pump if equipped.
6. Disconnect the front washer pump electrical connector.
7. Disconnect the front washer hose from the front washer pump.
8. Remove the washer solvent container screws.
9. Remove the washer solvent container from the vehicle.

Installation Procedure

1. Position the washer solvent container to the right side engine compartment.
2. Install the washer solvent container screws. Tighten: Tighten the screws to 10 N.m (89 lb in).
3. Connect the washer solvent container level sensor electrical connector.
4. Connect the rear washer pump electrical connector if equipped.
5. Connect the washer hose to the rear washer pump if equipped.
6. Connect the front washer pump electrical connector.
7. Connect the front washer hose to the front washer pump.
8. Fill the washer solvent container with washer solvent.
9. Install the battery. Refer to «Battery Replacement»(/buick/rendezvous/i-2001-2007/remont/charging-system/#battery-charging-system-and-starting-system__battery-replacement) in Engine Electrical.

1. Open the hood.
2. Drain the washer solvent from the washer solvent container.
3. Disconnect the washer solvent container level sensor electrical connector.
4. Using a small flat-bladed tool, remove the washer solvent container level sensor and seal from the washer solvent container.

1. Position the washer solvent container level sensor and seal to the washer solvent container pressing in until fully seated.
2. Connect the washer solvent container level sensor electrical connector.
3. Fill the washer solvent container with washer solvent.
4. Close the hood.

1. Open the hood.
2. Drain the washer solvent from the washer solvent container.
3. Disconnect the front washer pump electrical connector.
4. Disconnect the front washer hose from the front washer pump.
5. Using a small flat-bladed tool, remove the front washer pump from the washer solvent container.

1. Position the front washer pump to the washer solvent container pressing in until fully seated.
2. Connect the front washer hose to the front washer pump.
3. Connect the front washer pump electrical connector.
4. Fill the washer solvent container with washer solvent.
5. Close the hood.

1. Open the hood.
2. Disconnect the washer hose from the wiper arms.
3. Disconnect the washer hose from the air inlet grille panel.
4. Remove the washer hose grommet from the grille panel.
5. Disconnect the washer hose from the washer solvent container neck.
6. Disconnect the washer hose from the washer pump.
7. Remove the washer hose from the vehicle.

1. Position the washer hose to the vehicle.
2. Install the washer hose to the washer pump.
3. Connect the washer hose to the washer solvent container neck.
4. Install the washer hose grommet to the slot in the grille panel.
5. Connect the washer hose to the air inlet grille panel.
6. Connect the washer hose to the wiper arms.
7. Close the hood.

Tools Required

J 39822 Wiper Arm Puller. See Special Tools and Equipment .

1. Turn the ignition switch to the ACCY position.
2. Turn the wiper switch to the DELAY position.
3. Turn the ignition OFF when the wiper arms are in the innerwipe position and not moving.
4. Disconnect the washer hose from the washer nozzle.
5. Remove the cover from the wiper arm nut.
6. Remove the wiper arm nut from the wiper transmission drive shaft.
7. Using J 39822 , remove the wiper arm from the wiper transmission drive shaft. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .
8. Remove the wiper blade from the wiper arm. Refer to «Wiper Arm Blade Replacement»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .
9. Clean the knurls of the wiper transmission drive shaft with a wire brush.

1. Install the wiper blade onto the wiper arm. Refer to «Wiper Arm Blade Replacement»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .
2. Install the wiper arm onto the wiper transmission driveshaft.
3. Measure the distance from the wiper blade tip to the solid edge of the windshield blackout. Position the wiper arms at the following distances: LH - 40 mm (1.57 in) above the glass blackout. RH - 160 mm (6.30 in) below the glass blackout.
4. Install the wiper arm nut onto the wiper transmission driveshaft. Tighten: Tighten the nut to 48 N.m (35 lb ft).
5. Install the cover on the wiper arm nut.
6. Install the washer hose to the washer nozzle.
7. Inspect the wipers for proper operation.

1. Turn the ignition switch to the ACCY position.
2. Turn the wiper switch to the DELAY position.
3. Turn the ignition OFF when the wipers are in the innerwipe position and not moving.
4. Push in the button of the wiper blade clip and remove the wiper blade from the inside radius of the wiper arm.
5. Bring the wiper arm out through the opening in the wiper blade.

1. Insert the hook of the wiper arm through the opening in the wiper blade.
2. Position the wiper blade pivot in the inside radius of the wiper arm hook.
3. Pull the wiper blade pivot into the wiper arm hook until the pivot locks into the hook.
4. Inspect for proper operation.

Wiper Blade Element Replacement

Scheme 8

1. Remove the wiper blade from the wiper arm. Refer to «Wiper Arm Blade Replacement»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .
2. Remove the bottom claws (2) of the wiper blade (1) from the notches in the wiper blade element (3).
3. Pull the wiper blade element (3) out through the wiper blade claws (2).

1. Insert the open end of the wiper blade element (3) into the bottom claws of the wiper blade (2).
2. Guide the wiper blade element (3) through the wiper blade (1) claw sets.
3. Engage the bottom claw (2) of the wiper blade (1) into the notches in wiper blade element (3).
4. Install the wiper blade onto the wiper arm. Refer to «Wiper Arm Blade Replacement»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .

1. Remove the wiper system drive module. Refer to «Wiper Motor Module Replacement»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .
2. Remove the wiper motor cover screws.
3. Remove the wiper motor cover from the wiper motor.

1. Position the wiper motor cover to the wiper motor.
2. Install the wiper motor cover screws. Tighten: Tighten the screws to 3 N.m (27 lb in).
3. Install the wiper system drive module. Refer to «Wiper Motor Module Replacement»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .

Wiper Motor Replacement

The wiper motor is part of the wiper system drive module assembly and is not serviced separately. Refer to Wiper Motor Module Replacement .

Wiper Transmission Replacement

The wiper transmission is part of the wiper system drive module assembly and is not serviced separately. Refer to Wiper Motor Module Replacement .

Wiper Motor Crank Arm Replacement

The wiper motor crank arm is part of the wiper system drive module assembly and is not serviced separately. Refer to Wiper Motor Module Replacement .

Scheme 9

1. Remove the wiper arms. Refer to «Wiper Arm Replacement»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .
2. Remove the air inlet grille panel. Refer to «Air Inlet Grille Panel Replacement»(/buick/rendezvous/i-2001-2007/remont/exterior-body-panels/#body-front-end) in Body Front End.
3. Remove the underhood electrical center. Refer to «Underhood Electrical Center or Junction Block Replacement»(/buick/rendezvous/i-2001-2007/remont/body-electrical/#wiring-systems-diagnostic-information-and-procedures) in Wiring Systems.
4. Remove the cruise control module. Refer to «Cruise Control Module Replacement»(/buick/rendezvous/i-2001-2007/remont/cruise-control-systems/#cruise-control-system) in Cruise Control.
5. Disconnect the wiper motor cover electrical connector.
6. Remove the wiper system drive module bolts.
7. Remove the wiper system drive module from the engine compartment.

1. Position the wiper system drive module to the cowl.
2. Install the wiper system drive module bolts. Tighten: Tighten the bolts to 9 N.m (80 lb in).
3. Connect the wiper motor cover electrical connector.
4. Install the cruise control module and bracket. Refer to «Cruise Control Module Replacement»(/buick/rendezvous/i-2001-2007/remont/cruise-control-systems/#cruise-control-system) in Cruise Control.
5. Install the underhood electrical center. Refer to «Underhood Electrical Center or Junction Block Replacement»(/buick/rendezvous/i-2001-2007/remont/body-electrical/#wiring-systems-diagnostic-information-and-procedures) in Wiring Systems.
6. Install the air inlet grille panel. Refer to «Air Inlet Grille Panel Replacement»(/buick/rendezvous/i-2001-2007/remont/exterior-body-panels/#body-front-end) in Body Front End.
7. Install the wiper arms. Refer to «Wiper Arm Replacement»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .

Wiper Chatter Repair

Some vehicles may exhibit a condition where the windshield wipers chatter and/or wipe unevenly. Several items may contribute to this condition. To completely repair this condition, ALL of the items listed should be tested and repaired as necessary.

1. Clean the windshield glass. Refer to «Windshield Glass Cleaning»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system__windshield-glass-cleaning) .
2. Clean the wiper blade elements. Refer to «Blade Element Cleaning»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system__blade-element-cleaning) .
3. Perform the wiper arm pressure test. Refer to «Wiper Arm Tip Pressure Check»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .
4. Inspect the wiper blade element set. Refer to «Wiper Blade Element Check»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .

Windshield Glass Cleaning

Clean the windshield with windshield cleaner, GM P/N 1050011 (Canadian P/N 992727) or equivalent. The cleaner should not harm the paint finish or scratch the glass. The glass is clean when the water no longer beads, but sheets across the entire glass surface.

Blade Element Cleaning

Lift each blade assembly off of the windshield and clean the element with a cloth saturated with full strength washer solvent. Then rinse the blade assemblies with clear water.

1. Open the hood.
2. Drain the washer solvent from the washer solvent container.
3. Disconnect the rear washer pump electrical connector.
4. Disconnect the rear hose from the rear washer pump.
5. Using a small flat-bladed tool, remove the rear washer pump from the washer solvent container.

1. Position the rear washer pump to the washer solvent container pressing in until fully seated.
2. Connect the rear hose to the rear washer pump.
3. Connect the rear washer pump electrical connector.
4. Fill the washer solvent container with washer solvent.
5. Close the hood.

1. Apply tape to the area around the rear washer nozzle.
2. Using a small flat-bladed tool, remove the rear washer nozzle from the liftgate.
3. Remove the rear washer hose from the rear washer nozzle.
4. Remove the rear washer nozzle from the liftgate.

1. Install the rear washer hose to the rear washer nozzle.
2. Position the rear washer nozzle to the liftgate opening pressing in until fully seated.
3. Remove the tape from around the rear washer nozzle area.

1. Remove the right closeout/insulator panel. Refer to «Closeout/Insulator Panel Replacement - Right»(/buick/rendezvous/i-2001-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
2. Remove the right cowl trim panel. Refer to «Trim Panel Replacement - Cowl Side»(/buick/rendezvous/i-2001-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
3. Remove the right lower center pillar molding. Refer to «Trim Panel Replacement - Lower Center Pillar»(/buick/rendezvous/i-2001-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
4. Remove the right rear lower quarter trim panel. Refer to «Trim Panel Replacement - Rear Quarter Lower (Aztek)»(/buick/rendezvous/i-2001-2007/remont/exteriorinterior-trim/#interior-trim) or «Trim Panel Replacement - Rear Quarter Lower (Rendezvous)»(/buick/rendezvous/i-2001-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
5. Disconnect the rear washer hose from the rear washer pump.
6. Remove the rear washer hose end out through the opening under the right side of the instrument panel.
7. Remove the tape that secures the rear washer hose to the right sill area.
8. Remove the tape that secures the rear washer hose to the right rear quarter panel area.
9. Remove the rear washer nozzle. Refer to «Washer Nozzle Replacement - Rear»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .
10. Pull the rear washer hose end out through the liftgate rubber conduit.
11. Pull the rear edge of the headliner down to gain access to the rear washer hose.
12. Remove the rear washer hose from inside of the rear roof panel.
13. Remove the rear washer hose from the vehicle.

1. Position the rear washer hose to the inner right side of the vehicle.
2. Route the rear washer hose through the inside of the rear roof panel.
3. Route the rear washer hose through the liftgate rubber conduit.
4. Install the rear washer nozzle. Refer to «Washer Nozzle Replacement - Rear»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .
5. Position the rear washer hose to the right rear quarter panel area and secure with tape.
6. Position the rear washer hose to the right sill area and secure with tape.
7. Install the rear washer hose through the opening in the right side of the instrument panel.
8. Connect the rear washer hose to the rear washer pump.
9. Install the right rear lower quarter trim panel. Refer to «Trim Panel Replacement - Rear Quarter Lower (Aztek)»(/buick/rendezvous/i-2001-2007/remont/exteriorinterior-trim/#interior-trim) or «Trim Panel Replacement - Rear Quarter Lower (Rendezvous)»(/buick/rendezvous/i-2001-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
10. Install the right lower center pillar molding. Refer to «Trim Panel Replacement - Lower Center Pillar»(/buick/rendezvous/i-2001-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
11. Install the right cowl trim panel. Refer to «Trim Panel Replacement - Cowl Side»(/buick/rendezvous/i-2001-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
12. Install the right closeout/insulator panel. Refer to «Closeout/Insulator Panel Replacement - Right»(/buick/rendezvous/i-2001-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.

J 39822 Wiper Arm Puller. See Special Tools and Equipment .

1. Use tape or an erasable marker to mark position of wiper blade on the rear window.
2. Remove the cap from the rear wiper arm.
3. Remove the rear wiper arm nut.
4. Using J 39822 , remove the rear wiper arm. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .
5. Remove the rear wiper blade from the rear wiper arm. Refer to «Wiper Arm Blade Replacement - Rear»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .

1. Install the rear wiper blade onto the rear wiper arm. Refer to «Wiper Arm Blade Replacement - Rear»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .
2. Align the rear wiper blade with the mark on the rear window.
3. Install the rear wiper arm onto the rear wiper motor spindle. NOTE: Refer to Fastener Notice in Cautions and Notices.
4. Install the rear wiper arm nut. Tighten: Tighten the nut to 25 N.m (18 lb ft).
5. Install the cap to the rear wiper arm.
6. Remove the mark from the rear window.

1. Push in the button of the rear wiper blade clip and remove the rear wiper blade from the inside radius of the rear wiper arm.
2. Remove the rear wiper arm out through the opening in the rear wiper blade.

1. Insert the hook of the rear wiper arm through the opening in the rear wiper blade.
2. Position the rear wiper blade pivot in the inside radius of the rear wiper arm hook.
3. Press the rear wiper blade pivot into the rear wiper arm hook until the pivot locks into the hook.

1. Remove the rear wiper blade from the rear wiper arm. Refer to «Wiper Arm Replacement - Rear»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .
2. Remove the rubber wiper element from the element vertebra.
3. Remove the element vertebra and end cap from the rear wiper blade.

1. Install the end cap on the rear wiper blade.
2. Install the new element into the rear wiper blade and the end cap until the inner claw set engages the vertebra notches.
3. Install the rear wiper blade onto the rear wiper arm. Refer to «Wiper Arm Replacement - Rear»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .

1. Remove the rear wiper arm. Refer to «Wiper Arm Replacement - Rear»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .
2. Remove the seal from the wiper motor driveshaft.
3. Remove the liftgate access trim panel.
4. Remove the rear wiper motor screws.
5. Disconnect the rear wiper motor electrical connector.
6. Remove the rear wiper motor from the liftgate.

1. Connect the rear wiper motor electrical connector.
2. Position the rear wiper motor to the liftgate.
3. Install the rear wiper motor screws. Tighten: Tighten the screws to 6 N.m (53 lb in).
4. Install the liftgate access trim panel.
5. Install the seal onto the rear wiper motor driveshaft.
6. Install the rear wiper arm. Refer to «Wiper Arm Replacement - Rear»(/buick/rendezvous/i-2001-2007/remont/wiperwasher-systems/#wiper-system-washer-system) .

Wiper/Washer System Components

The Wiper/Washer System consists of the following components

1. Windshield wiper/washer switch
2. Windshield wiper motor module
3. Windshield wiper motor
4. Windshield washer pump motor
5. Windshield washer fluid level switch
6. WIPER 25A fuse

Wiper/Washer System Operation

The windshield wiper motor module is part of the windshield wiper motor cover and controls wiper motor operation. The windshield wiper motor is a 2 speed motor and is operated at low speed in all modes except HIGH. The accessory voltage supply circuit to the windshield wiper motor assembly is used to operate the wiper motor in all of the low speed modes. The accessory voltage supply circuit to the windshield wiper/washer switch is used to supply the windshield wiper switch signal circuits and the wiper motor high speed circuit.

When the wiper/washer switch is in the LOW position voltage is supplied through a 24K ohm resistor within the switch to the windshield wiper switch signal 2 circuit, and accessory voltage is supplied to the windshield wiper switch signal 1 circuit. The reduced voltage from the wiper switch signal 2 circuit and accessory voltage from the wiper switch signal 1 circuit causes the wiper motor module to close the wiper motor accessory voltage supply circuit to the wiper motor low speed terminal.

Windshield wiper/washer system MIST operation is identical to LOW operation except that the MIST switch is a press and release type. When the wiper switch is moved to the MIST position and released, low speed wiper motor operation is started and will continue until 1 cycle is complete. If the wiper switch is moved to the MIST position and held, the windshield wiper motor will operate in the LOW mode until the switch is released.

Windshield wiper DELAY operation is a low speed wiper motor function with a variable delay interval between the wiper motor cycles. The DELAY interval is controlled through a series of resistors within the wiper/washer switch. During DELAY wiper operation the wiper switch signal 2 circuit is at the same voltage level used for LOW operation, but the wiper switch signal 1 circuit voltage is reduced through the DELAY resistors. The windshield wiper motor module uses a capacitor feed by the wiper switch signal 1 circuit to determine the frequency of the low speed wiper motor cycles. When the wiper switch signal 1 circuit is at the accessory voltage level as in the LOW switch position, the capacitor charges fast causing continuous low speed wiper motor operation.

The DELAY switch position indicating the longest interval between wiper motor cycles is the switch position with the highest resistance resulting in low voltage on the wiper switch signal 1 circuit. The low voltage charges the capacitor slowly causing a long delay interval between wiper motor cycles. As the DELAY switch is turned to positions indicating more frequent wiper cycles, the resistance through the wiper/washer switch is reduced and the wiper switch signal 1 circuit voltage increases. When the wiper switch signal 1 circuit voltage increases the capacitor charges faster and the delay interval between wiper motor cycles decreases.

When the wiper/washer switch is in the HIGH position the accessory voltage to the wiper/washer switch is closed to the wiper motor high speed circuit. The accessory voltage on the high speed circuit is supplied to the wiper motor module and is used to operate the wiper motor at high speed. During HIGH speed wiper motor operation the wiper switch signal 1 and signal 2 circuits are at the LOW speed signal voltages, but the LOW speed signal circuit inputs to the wiper motor module have no effect on wiper motor high speed operation.

The windshield wiper/washer system WASH function uses 2 switch contacts within the wiper/washer switch assembly. One switch contact closes the wiper/washer switch accessory voltage supply circuit to the wiper switch signal 2 circuit. Accessory voltage on the wiper switch signal 2 circuit causes the wiper motor module to close the wiper motor accessory voltage supply circuit to the wiper motor low speed terminal. The WASH command on the wiper switch signal 2 circuit will cause the wiper motor to operate at low speed for as long as the switch is held in the closed position and approximately 6 seconds after being released. The other WASH switch contact in the wiper/washer switch is the control circuit to the windshield washer pump. When the WASH switch is in the held in the closed position the wiper/washer switch accessory voltage supply circuit is used to operate the windshield washer pump until the switch is released.

Windshield wiper motor park operation is controlled by the wiper motor module using an input from the park switch within the wiper motor assembly. When the windshield wiper/washer switch is turned to the OFF position while the wiper motor is somewhere in mid-cycle, the wiper motor module will continue to operate the wiper motor until the wipers reach the park position.

Low Washer Fluid Indicator

The low washer fluid indicator is controlled by the instrument panel cluster (IPC) using an input from the washer fluid level switch. The washer fluid level signal circuit is supplied ignition voltage through a resistor then monitored within the instrument cluster. The washer fluid level switch is normally open so the instrument cluster detects ignition voltage on the washer fluid level signal circuit whenever the washer fluid level is not low. When the washer fluid level reaches the point where the driver should be informed that the washer fluid is low, the washer fluid level switch closes. When the washer fluid level switch is closed the washer fluid level signal circuit voltage is pulled low, and the instrument cluster illuminates the LOW WASHER FLUID indicator. In order to prevent the LOW WASHER FLUID indicator from flashing due to sloshing in the washer fluid container, the instrument cluster is programed with a 1 minute delay before changing states of the LOW WASHER FLUID indicator during an ignition cycle.

Rear Wiper/Washer System Components

The rear wiper/washer system consists of the following components

1. Rear wiper/washer switch
2. Rear wiper motor
3. Rear wiper motor module
4. Rear washer pump
5. RR WPR/WSHR 20A fuse

Rear Wiper/Washer System Operation

The rear wiper motor module is part of the rear wiper motor assembly and controls wiper motor operation. Battery voltage supplied to the wiper motor assembly is used to operate the wiper motor in all modes and to return the rear wiper arm to the park position after the ignition is turned off. Accessory voltage supplied to the rear wiper/washer switch is used to supply the rear wiper switch signal circuits and the rear washer pump. When the rear wiper switch is in the DELAY position the accessory voltage to the rear wiper/washer switch is closed to the wiper switch signal circuit. The accessory voltage on the wiper switch signal circuit causes the wiper motor module to operate the wiper motor in the DELAY mode. The rear washer control circuit is used to provide the operating voltage for the rear washer pump for as long as the rear washer switch is pressed. The rear washer control circuit is also used as a wash signal to the rear wiper motor module. When the rear wiper/washer switch or ignition switch is turned OFF during a rear wiper motor cycle, the park switch within the wiper motor assembly supplies battery voltage to continue wiper motor operation until the wiper motor reaches the park position and the switch opens.

Special Tools

Special Tools Illustration Tool Number/Description J 39822 Wiper Arm Puller

Scheme 10

See also:
• Checking Aftermarket Accessories
• Testing for Intermittent Conditions and Poor Connections
• Circuit Testing
• Wiring Repairs
• Connector Repairs
• Instrument Panel Cluster (IPC) Replacement
• Multifunction, Turn Signal Switch Replacement
• Battery Replacement
• Air Inlet Grille Panel Replacement
• Underhood Electrical Center or Junction Block Replacement
• Cruise Control Module Replacement
• Trim Panel Replacement - Cowl Side
• Symptoms - Wiper/Washer Systems
• Wiper/Washer System Description and Operation
• Low Washer Fluid Indicator Malfunction
• Washers Inoperative
• Wipers Inoperative - All Modes
• Washer Inoperative - Rear
• Wiper Always On - Rear
• Wiper Inoperative - Rear
• Wiper/Washer System Connector End Views
• Wiper Blade Element Replacement
• Windshield Glass Cleaning
• Blade Element Cleaning