Wiper System & Washer System Cadillac Escalade GMT800

Fastener Tightening Specifications

Wipers/Washer Systems Fastener Tightening Specifications Table

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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»(/cadillac/escalade/gmt800-2001-2006/remont/wiperwasher-systems/#wiper-system-washer-system)
2. «REAR WIPER/WASHER SYSTEM DESCRIPTION AND OPERATION»(/cadillac/escalade/gmt800-2001-2006/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 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 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»(/cadillac/escalade/gmt800-2001-2006/remont/wiperwasher-systems/#wiper-system-washer-system)
2. «WASHERS ALWAYS ON»(/cadillac/escalade/gmt800-2001-2006/remont/wiperwasher-systems/#wiper-system-washer-system)
3. «WASHERS INOPERATIVE»(/cadillac/escalade/gmt800-2001-2006/remont/wiperwasher-systems/#wiper-system-washer-system)
4. «WIPERS ALWAYS ON»(/cadillac/escalade/gmt800-2001-2006/remont/wiperwasher-systems/#wiper-system-washer-system)
5. «WIPERS INOPERATIVE - ALL MODES»(/cadillac/escalade/gmt800-2001-2006/remont/wiperwasher-systems/#wiper-system-washer-system)
6. «WIPERS INOPERATIVE - ONE OR MORE MODES»(/cadillac/escalade/gmt800-2001-2006/remont/wiperwasher-systems/#wiper-system-washer-system)
7. «WASHER INOPERATIVE - REAR»(/cadillac/escalade/gmt800-2001-2006/remont/wiperwasher-systems/#wiper-system-washer-system)
8. «WIPER ALWAYS ON - REAR»(/cadillac/escalade/gmt800-2001-2006/remont/wiperwasher-systems/#wiper-system-washer-system)
9. «WIPER INOPERATIVE - REAR»(/cadillac/escalade/gmt800-2001-2006/remont/wiperwasher-systems/#wiper-system-washer-system)

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Test Description

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

1. 5. This step tests for continuity through the 390 ohms resistor in the windshield wiper/washer switch.
2. 6. This step tests for continuity through the delay resistors in the windshield wiper/washer switch. The measured resistance will change in sequence from low to high as the delay speed is increased.

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Wiper Arm Tip Pressure Check

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»(/cadillac/escalade/gmt800-2001-2006/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 with the blade attached.
4. Replace the wiper arm if the measurement is not within the specification. Refer to «WIPER ARM REPLACEMENT»(/cadillac/escalade/gmt800-2001-2006/remont/wiperwasher-systems/#wiper-system-washer-system) . Tip Pressure Driver Side - 8.1-9.5 Newtons (29-34 Ounces) Passenger Side - 5.8-7.0 Newtons (21-25 Ounces)

Wiper Blade Element Check

1. Remove the wiper blades from the wiper arms. Refer to «WIPER ARM BLADE REPLACEMENT»(/cadillac/escalade/gmt800-2001-2006/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»(/cadillac/escalade/gmt800-2001-2006/remont/wiperwasher-systems/#wiper-system-washer-system) .
4. Install the wiper blades on the wiper arms. Refer to «WIPER ARM BLADE REPLACEMENT»(/cadillac/escalade/gmt800-2001-2006/remont/wiperwasher-systems/#wiper-system-washer-system) .

Removal Procedure

1. Remove the battery and battery tray from the vehicle. Refer to BATTERY TRAY REPLACEMENT in Engine Electrical.
2. Remove the inner wheel housing from the vehicle. Refer to WHEELHOUSE PANEL REPLACEMENT in Body Front End.
3. Disconnect the electrical connector from the washer pump.
4. Disconnect the electrical connector from the washer solvent level sensor.
5. Disconnect the washer hose from the washer pump.
6. Remove the upper bolt from the washer solvent container.
7. Remove the lower bolts from the washer solvent container.
8. Remove the washer solvent container from the vehicle.

Installation Procedure

1. Install the washer solvent container into the vehicle.
2. Install the lower bolts. NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems. Tighten Tighten the bolts to 9 N.m (80 lb in).
3. Install the upper bolt. Tighten Tighten the bolt to 9 N.m (80 lb in).
4. Connect the electrical connector to the washer pump.
5. Connect the electrical connector to the washer solvent level sensor.
6. Connect the washer hose to the washer pump.
7. Install the inner wheel housing. Refer to WHEELHOUSE PANEL REPLACEMENT in Body Front End.
8. Install the battery and battery tray. Refer to BATTERY TRAY REPLACEMENT in Engine Electrical.

1. Remove the washer solvent container. Refer to «WASHER PUMP/RESERVOIR REPLACEMENT»(/cadillac/escalade/gmt800-2001-2006/remont/wiperwasher-systems/#wiper-system-washer-system) .
2. Remove the washer pumps from the reservoir.

1. Install the washer pumps into the reservoir.
2. Install the washer solvent container. Refer to «WASHER PUMP/RESERVOIR REPLACEMENT»(/cadillac/escalade/gmt800-2001-2006/remont/wiperwasher-systems/#wiper-system-washer-system) .

1. Mark the position of the wiper blade on the windshield with a suitable marker or a piece of masking tape.
2. Disconnect the washer hose.
3. Remove the cover from the nut on the wiper arm.
4. Remove the nut from the wiper arm. IMPORTANT: Use a battery terminal puller to remove the wiper arm from the drive shaft.
5. Remove the wiper arm from the drive shaft.
6. Clean the knurls of the drive shaft with a wire brush.

1. Position the wiper arm so that the wiper blade aligns with the mark made on the windshield before removal.
2. Install the wiper arm onto the drive shaft.
3. Install the nut on the drive shaft. NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems. Tighten Tighten the nut to 30 N.m (22 lb ft).
4. Install the cover on the nut.
5. Connect the washer hose.
6. Clean the locating mark or masking tape from the windshield.
7. Operate the wipers and inspect for proper operation.

1. Turn the ignition switch to the ACCY position.
2. Set the wiper switch to the PULSE 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. Operate the wipers and inspect for proper operation.

1. Remove the wiper blade from the wiper arm. Refer to «WIPER ARM BLADE REPLACEMENT»(/cadillac/escalade/gmt800-2001-2006/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»(/cadillac/escalade/gmt800-2001-2006/remont/wiperwasher-systems/#wiper-system-washer-system) .

Tools Required

1. J 39232 Wiper Transmission Separator
2. J 39529 Wiper Transmission Installer

1. Remove the wiper arms. Refer to «WIPER ARM REPLACEMENT»(/cadillac/escalade/gmt800-2001-2006/remont/wiperwasher-systems/#wiper-system-washer-system) .
2. Remove the air inlet grille panel. Refer to AIR INLET GRILLE PANEL REPLACEMENT in Body Front End.
3. Remove the 4 bolts and the reinforcement panel.
4. Disconnect the electrical connector from the wiper motor.
5. Remove the 2 bolts from the wiper transmission assembly.
6. Remove the wiper transmission assembly from the vehicle.
7. Remove the drive link from the wiper motor crank arm with the J 39232.
8. Remove the 2 bolts retaining the wiper motor.
9. Remove the wiper motor from the wiper transmission assembly.

Note. Refer to Fastener Notice in Cautions and Notices.

1. Install the wiper motor onto the wiper transmission assembly with the 2 bolts. Tighten Tighten the 2 bolts to 8 N.m (71 lb in).
2. Install the drive link onto the wiper motor crank arm with the J 39529.
3. Install the wiper transmission assembly on the vehicle with the 2 bolts. Tighten Tighten the 2 bolts to 9 N.m (80 lb in).
4. Connect the electrical connector to the wiper motor.
5. Install the reinforcement panel with the 4 bolts. Tighten Tighten the 4 bolts to 9 N.m (80 lb in).
6. Install the air inlet grille panel. Refer to AIR INLET GRILLE PANEL REPLACEMENT in Body Front End.
7. Install the wiper arms. Refer to «WIPER ARM REPLACEMENT»(/cadillac/escalade/gmt800-2001-2006/remont/wiperwasher-systems/#wiper-system-washer-system) .
8. Operate the wipers and check for proper operation.

1. J 39232 Wiper Transmission Separator
2. J 39529 Wiper Transmission Installer

1. Remove the wiper arms. Refer to «WIPER ARM REPLACEMENT»(/cadillac/escalade/gmt800-2001-2006/remont/wiperwasher-systems/#wiper-system-washer-system) .
2. Remove the air inlet grille panel. Refer to AIR INLET GRILLE PANEL REPLACEMENT in Body Front End.
3. Remove the 4 bolts and the reinforcement panel.
4. Disconnect the electrical connector from the wiper motor.
5. Remove the 2 bolts from the wiper transmission assembly.
6. Remove the wiper transmission assembly from the vehicle.
7. Remove the drive link from the wiper motor crank arm with the J 39232.
8. Remove the 2 bolts retaining the wiper motor.
9. Remove the wiper motor from the wiper transmission assembly.

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1. Install the wiper motor onto the wiper transmission assembly with the 2 bolts. NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems. Tighten Tighten the 2 bolts to 8 N.m (71 lb in).
2. Install the drive link onto the wiper motor crank arm with the J 39529.
3. Install the wiper transmission assembly on the vehicle with the 2 bolts. Tighten Tighten the 2 bolts to 9 N.m (80 lb in).
4. Connect the electrical connector to the wiper motor.
5. Install the reinforcement panel with the 4 bolts. Tighten Tighten the 4 bolts to 9 N.m (80 lb in).
6. Operate the wipers and inspect for proper operation.
7. Install the air inlet grille panel. Refer to AIR INLET GRILLE PANEL REPLACEMENT in Body Front End.
8. Install the wiper arms. Refer to «WIPER ARM REPLACEMENT»(/cadillac/escalade/gmt800-2001-2006/remont/wiperwasher-systems/#wiper-system-washer-system) .

Wiper Chatter Repair

Some vehicles may exhibit a condition where the windshield wiper blades chatter or wipe unevenly. Several different conditions can cause the wiper blade chatter. To completely repair wiper blade chatter, all of the following should be checked and repaired as necessary

1. The windshield glass must be clean.
2. The wiper blade element must be clean.
3. The wiper arm tip pressure must be within specifications.
4. The wiper blade element set must be within specifications.

Windshield Glass Cleaning

Clean the windshield glass with windshield cleaner. The cleaner used should be one that will not harm the paint finish or scratch the glass. The windshield glass is clean when water no longer beads, but sheets across the entire glass surface.

Blade Element Cleaning

1. Lift the wiper blade assemblies off of the windshield glass.
2. Clean the wiper blade element with a clean cloth saturated with full strength washer solution.
3. Rinse the wiper blade assemblies with water.
4. Place the wiper blade assemblies back onto the windshield glass.

1. Disconnect the washer hose.
2. Swivel the wiper arm cover open.
3. Remove the nut retaining the wiper arm to the wiper motor.
4. Remove the wiper arm from the liftgate.

1. Align the wiper arm to the vehicle.
2. Install the nut retaining the wiper arm to the wiper motor. NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems. Tighten Tighten the nut to 23 N.m (17 lb ft).
3. Swivel the wiper arm cover closed.
4. Connect the washer hose to the wiper arm.
5. Check the rear wiper for proper operation.

1. Push in the button of the wiper blade clip and remove the wiper blade from the inside radius of the wiper arm.
2. 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. Operate the wipers and inspect for proper operation.

1. Remove the wiper blade from the wiper arm. Refer to «WIPER ARM BLADE REPLACEMENT - REAR»(/cadillac/escalade/gmt800-2001-2006/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 - REAR»(/cadillac/escalade/gmt800-2001-2006/remont/wiperwasher-systems/#wiper-system-washer-system) .

1. Remove the wiper arm. Refer to «WIPER ARM REPLACEMENT - REAR»(/cadillac/escalade/gmt800-2001-2006/remont/wiperwasher-systems/#wiper-system-washer-system) .
2. Remove the nut and spacer from the wiper motor shaft.
3. Remove the interior trim panel. Refer to TRIM PANEL REPLACEMENT - LIFT GATE in Body Rear End.
4. Disconnect the wiper motor electrical connector.
5. Remove the two screws.
6. Remove the wiper motor.

1. Install the wiper motor.
2. Intall the two screws. NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems. Tighten Tighten the screws to 19 N.m (14 lb ft).
3. Connect the wiper motor electrical connector.
4. Install the interior trim panel. Refer to TRIM PANEL REPLACEMENT - LIFT GATE in Body Rear End.
5. Install the spacer and the nut on the wiper motor drive shaft. Tighten Tighten the nut to 8 N.m (71 lb in).
6. Install the wiper arm.

1. Remove the I/P cluster trim bezel. Refer to BEZEL REPLACEMENT - INSTRUMENT PANEL (I/P) CLUSTER in Instrument Panel, Gages and Console.
2. Insert a flat bladed tool at the top and bottom of the switch assembly as shown in the graphic in order to pry it out.
3. Pull out the switch assembly in order to gain access to the connector.
4. Disconnect the wire connector.
5. Remove the switch from the I/P. The rear wiper switch (1) is replaced as an assembly if the vehicle is equipped with front fog lamps.

1. Connect the wire connector to the switch assembly.
2. Push in the switch assembly (1, 2) until both tabs click in place.
3. Install the I/P cluster trim bezel. Refer to BEZEL REPLACEMENT - INSTRUMENT PANEL (I/P) CLUSTER in Instrument Panel, Gages and Console.

Windshield Wiper/Washer System Components

The windshield wiper/washer system consists of the following components

1. Windshield wiper/washer switch
2. Windshield wiper motor module
3. Windshield washer pump
4. Windshield washer relay
5. W/S WIPER 25A fuse
6. W/S WASH 15A fuse

Wiper/Washer System Operation

The windshield wiper motor module controls the windshield wiper motor and washer pump 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 provides the power for operating the wiper motor module. The windshield wiper switch supply voltage circuit is a 12-volt reference from the wiper motor module to the wiper/washer switch. The WASH, MIST, LOW, and DELAY modes are controlled by the windshield wiper/washer switch through a series of internal resistors, and the switch position determines the point on the resistor assembly where the reference voltage is applied. The windshield wiper switch signal circuit supplies the signal voltage from the switch assembly to the wiper motor module which determines the operating mode. Windshield wiper motor high speed operation is controlled by the windshield wiper/washer switch through the windshield wiper switch high signal circuit. The windshield wiper switch high signal circuit is supplied 12 volts by the wiper motor module and when the wiper/washer switch is turned to the HIGH position the windshield wiper switch high signal circuit is grounded. The windshield washer pump is controlled by the wiper motor module through the windshield washer relay. The windshield washer relay coil and switch is supplied battery positive voltage, and during WASH mode the wiper motor module grounds the washer relay control circuit energizing the relay. While the relay coil is energized battery positive voltage to the switch side of the relay is supplied to the washer pump control circuit.

Check Washer Fluid Message

The Check Washer Fluid message is controlled by the instrument panel cluster 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 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 panel displays the Check Washer Fluid message on the driver information center. In order to prevent the Check Washer Fluid message from being displayed while sloshing is occurring in the washer fluid container, the instrument cluster is programed with a 1 minute delay before changing states of the Check Washer Fluid message 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. Window wiper module-rear
3. Window washer pump-rear
4. RR WIPER 15A fuse
5. RR WPRB 25A fuse

Rear Wiper/Washer System Operation

The rear wiper module controls rear wiper motor operation. Battery voltage supplied to the module 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 window wiper and washer switch signal circuits. In wiper switch positions 1 and 2 the wiper switch signal circuit voltage level to the wiper motor module determines the wiper motor delay interval. The rear window washer pump supply voltage 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 window washer switch signal circuit is used as a wash signal to the rear wiper motor module to operate the wipers during the rear wash operation.

The liftgate ajar switch signal circuit provides information to the rear window wiper module about the status of the liftgate. If the liftgate or liftglass is open the rear wiper operation is not performed.

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See also:
• SYMPTOMS - WIPER/WASHER SYSTEMS
• WIPER/WASHER SYSTEM DESCRIPTION AND OPERATION