Windshield wiper stays in delay all the time

If the windshield wipers on your 2002 Corvette won't shut off, it could indicate a problem with the wiper control switch or a malfunction in the wiper motor circuit. Here are some troubleshooting steps you can try:

1. Check the wiper control switch: Ensure that the wiper control switch is in the "Off" position. Sometimes, the switch can get stuck or malfunction, causing the wipers to stay on. Try moving the switch back and forth a few times to see if that resolves the issue.
2. Inspect the wiper motor relay: The wiper motor relay controls the power supply to the wiper motor. If the relay gets stuck or fails, it can cause the wipers to stay on. Locate the wiper motor relay in the fuse box or relay panel and try replacing it with a known working relay of the same type to see if that resolves the issue.
3. Check the wiper motor circuit: The wiper motor circuit may have a short or an electrical problem that is keeping the wipers engaged. Inspect the wiring harness connected to the wiper motor for any signs of damage or loose connections. Use a multimeter to check for continuity and proper voltage in the circuit. If you are not familiar with automotive electrical systems, it is advisable to consult a professional technician or a qualified electrician.
4. Disconnect the battery: As a temporary solution, you can disconnect the negative terminal of the car battery to stop the wipers from running. This will disable other electrical components as well, so it's recommended as a temporary measure until the issue can be properly diagnosed and repaired.

Question edited for clarity. Part of duplicate question added.
Duplicate question deleted.
Question moved to model category.

This says Pulse Board or the Switch

https://www.google.com/search?q=2004+Pontiac+Montana+front+wipers+won%27t+turn+off

This says it does have a relay... but

https://www.google.com/search?q=2004+Pontiac+Montana+wiper+relay

Nothing shows where it is located.

https://www.google.com/search?q=2004+Pontiac+Montana+wiper+relay+location

Relay here

https://www.autozone.com/electrical-and-lighting/wiper-motor-relay

It may not be releasing, you can test if you can find it!

https://www.autozone.com/electrical-and-lighting/wiper-motor-relay

..

Excellent diagnostics by our resident Pro Expert Jeff, which should be down here. It makes the question solved and will appear in a search of the site as 'Solved'. It also gives you points and awards.

• Jeff Armer Nov 17, 2021
• could be the wiper relay contacts are stuck closed causing power (battery voltage ) to be supplied all the time ,or a problem with the GEM module .
  
  Windshield Wiper
  
  The windshield wiper system consists of the following parts:
  
  Windshield wiper arms (2)
  Windshield wiper motor on the air cowl trim panel
  Windshield wiper linkage
  Windshield wiper blades (2)
  Wiper relay, in the central junction box (CJB)
  Generic electronic module (GEM)
  Wiper/washer switch (part of the multi-function switch), consisting of:
  wiper switch
  washer switch (pressure switch) and
  delay control switch (rotary switch, depending on model)
  
  Inspection and Verification
  
  Verify the customer concern.
  Visually inspect for obvious signs of mechanical and electrical damage:
  
  
  Visual Inspection Chart Mechanical Electrical
  Wiper blades
  Front wiper linkage
  Fluid reservoir - windshield washing system (level)
  Hoses
  Nozzles
  Central junction box (CJB) fuse(s):
  43 (15A)
  56 (20A)
  Pump
  Wiper/washer switch
  Windshield wiper relay
  Rear wiper relay
  Generic electronic module (GEM)
  Circuitry
  
  
  
  If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  If the cause is not visually evident, connect the scan tool to the data link connector (DLC) and select the vehicle to be tested from the scan tool menu. If the scan tool does not communicate with the vehicle:
  check that the program card is correctly installed.
  check the connections to the vehicle.
  check the ignition switch position.
  If the scan tool still does not communicate with the vehicle, refer to the scan tool operating manual.
  Carry out the scan tool data link test. If the scan tool responds with:
  ISO or CAN circuit fault; all electronic control units no response/not equipped, refer to Section 418-00 .
  No response/not equipped for GEM, refer to Section 419-10 .
  System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out the self-test diagnostics for the GEM.
  If the DTCs retrieved are related to the concern, go to the Generic Electronic Module (GEM) Diagnostic Trouble Code (DTC) Index.
  If no DTCs related to the concern are retrieved, GO to Symptom Chart .
• 
  Jeff Armer Nov 17, 2021
  B1438 Wiper Mode Select Switch Circuit Failure GEM Go To Pinpoint Test H .
  B1446 Wiper Park Sense Circuit Failure GEM Go To Pinpoint Test G .
  B1451 Wiper Wash/Delay Switch Circuit Failure GEM Go To Pinpoint Test H .
  B1611 Wiper Rear Mode Select Switch Failure GEM Go To Pinpoint Test F .
  B2107 Front Wiper Motor Relay Circuit Short To Battery GEM Go To Pinpoint Test H .
  B2110 Front Wiper Motor Relay Circuit Open GEM Go To Pinpoint Test H
  
  
  checking for codes in the gem module mite point you into a diagnostic direction .
  
  The wipers stay on continuously
  Wiper/washer switch
  Windshield wiper motor
  Windshield wiper relay
  Generic electronic module (GEM)
  Central junction box (CJB)
  Circuitry
  Go To Pinpoint Test B .
  
  Pinpoint Test B: The Wipers Stay On Continuously
  
  Normal Operation
  When low speed operation is selected, the windshield wiper motor receives voltage through circuit 32-KA10 (WH/GN). When high speed operation is selected, the windshield wiper motor receives voltage through circuit 32-KA11 (WH/BK). When intermittent operation is selected, the generic electronic module (GEM) sends an intermittent ground signal to the windshield wiper relay through circuit 91S-KA12 (BK/WH). The relay energizes and sends voltage to the wiper/washer switch through circuit 32-KA19 (WH/BK). The wiper/washer switch sends voltage to the windshield wiper motor through circuit 32-KA10 (WH/GN). When the wiper/washer switch is turned to the off position, or between intermittent pulses, the internal run/park switch in the windshield wiper motor provides voltage to the windshield wiper relay through circuit 32-KA9 (WH/BU) until the wiper motor completes its cycle and opens the circuit
  
  Possible Causes
  Circuit 32-KA10 (WH/GN) short to voltage
  Circuit 32-KA11 (WH/BK) short to voltage
  Circuit 32-KA19 (WH/BK) short to voltage
  Circuit 91S-KA12 (BK/WH) short to ground
  Wiper/washer switch
  Windshield wiper motor
  Windshield wiper relay
  Central junction box (CJB)
  GEM
  
  
  PINPOINT TEST B: THE WIPERS STAY ON CONTINUOUSLY
  Test Step Result / Action to Take
  B1 DETERMINE THE WIPE SPEED
  Move the wiper lever to the OFF position.
  Key in ON position.
  Do the windshield wipers move at a fast rate?
  Yes
  GO to B2 .
  
  No
  GO to B4 .
  B2 CHECK THE WIPER/WASHER SWITCH FOR NORMAL OPERATION
  Key in OFF position.
  Disconnect: Wiper/Washer Switch C2081.
  Key in ON position.
  Do the windshield wipers move at a fast rate?
  Yes
  GO to B3 .
  
  No
  CHECK the wiper/washer switch for correct operation.
  Refer to Wiring Diagrams Cell 149 for schematic and connector information.
  
  If necessary, INSTALL a new multi-function switch. REFER to Section 211-05 . TEST the system for normal operation.
  B3 CHECK CIRCUIT 32-KA11 (WH/BK) FOR A SHORT TO VOLTAGE
  Key in OFF position.
  Disconnect: Windshield Wiper Motor C125.
  Key in ON position.
  Measure the voltage between wiper/washer switch C2081-8, circuit 32-KA11 (WH/BK), harness side and ground.
  
  Is the voltage greater than 10 volts?
  Yes
  REPAIR the circuit. TEST the system for normal operation.
  
  No
  INSTALL a new windshield wiper motor. REFER to Wiper Motor - Windshield in this section. TEST the system for normal operation.
  B4 CHECK THE WIPER/WASHER SWITCH FOR NORMAL OPERATION
  Key in OFF position.
  Disconnect: Wiper/Washer Switch C2081.
  Key in ON position.
  Do the front wipers move at a slow rate?
  Yes
  GO to B5 .
  
  No
  GO to B6 .
  B5 CHECK CIRCUIT 32-KA10 (WH/GN) FOR A SHORT TO VOLTAGE
  Key in OFF position.
  Disconnect: Windshield Wiper Motor C125.
  Key in ON position.
  Measure the voltage between wiper/washer switch C2081-9, circuit 32-KA10 (WH/GN), harness side and ground.
  
  Is the voltage greater than 10 volts?
  Yes
  REPAIR the circuit. TEST the system for normal operation.
  
  No
  INSTALL a new windshield wiper motor. REFER to Wiper Motor - Windshield in this section. TEST the system for normal operation.
  B6 CARRY OUT THE WIPER/WASHER SWITCH COMPONENT TEST
  Carry out the wiper/washer switch component test.
  Refer to Wiring Diagrams Cell 149 for schematic and connector information.
  
  Does the wiper/washer switch pass the component test?
  Yes
  GO to B7 .
  
  No
  INSTALL a new multi-function switch. REFER to Section 211-05 . TEST the system for normal operation.
  B7 CHECK CIRCUIT 32-KA19 (WH/BK) FOR A SHORT TO VOLTAGE
  Key in OFF position.
  Connect: Wiper/Washer Switch C2081.
  Disconnect: CJB C270c.
  Key in ON position.
  Do the windshield wipers move at a slow rate?
  Yes
  REPAIR the circuit. TEST the system for normal operation.
  
  No
  GO to B8 .
  B8 CHECK THE CJB FOR A SHORT TO VOLTAGE
  Key in OFF position.
  Disconnect: Windshield Wiper Relay C2042.
  Connect: CJB C270c.
  Key in ON position.
  Do the windshield wipers move at a slow rate?
  Yes
  INSTALL a new CJB. TEST the system for normal operation.
  
  No
  GO to B9 .
  B9 CHECK THE WINDSHIELD WIPER RELAY
  Carry out the windshield wiper relay component test.
  Refer to Wiring Diagrams Cell 149 for schematic and connector information.
  
  Does the windshield wiper relay function normally?
  Yes
  GO to B10 .
  
  No
  INSTALL a new windshield wiper relay. TEST the system for normal operation.
  B10 CHECK CIRCUIT 91S-KA12 (BK/WH) FOR A SHORT TO GROUND
  Key in OFF position.
  Connect: Windshield Wiper Relay C2042.
  Disconnect: GEM C201e.
  Key in ON position.
  Do the windshield wipers move at a slow rate?
  Yes
  REPAIR the circuit. TEST the system for normal operation.
  
  No
  GO to B11 .
  B11 CHECK FOR CORRECT GEM OPERATION
  Disconnect all the GEM connectors.
  Check for:
  corrosion.
  pushed-out pins.
  Connect all the GEM connectors and make sure they seat correctly.
  Operate the system and verify the concern is still present.
  Is the concern still present?
  Yes
  INSTALL a new GEM. REFER to Section 419-10 . TEST the system for normal operation.
  
  No
  The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
  

My database only shows one wiper motor. Did you check voltage and ground, anywhere? Check the wiper fuse for voltage, hot all the time, use test light. At the wiper motor, dark green wire is voltage for lo speed. The purple wire is voltage for hi speed, Turn on key, turn on wiper switch, probe those two wires for voltage, use a test light. That bottom black wire off wiper motor, in diagram, is ground, check that also. If good voltage and ground with no wiper action, I suspect the wiper motor. There are codes for wiper, manufacturer codes, check for codes. good luck

You didn't take into account the wiper switch is a input to the BCM - body control module ,or do you know that ? The BCM controls wiper one an wiper two relay's to turn on the wipers .
Wondering if it is the PCB or perhaps a physical problem? Guessing never finds the problem . Reading how they work in factory service repair info should be the first step for someone that doesn't know .
Intermittent Operation
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 determined by a series of 5 resistors within the wiper/washer switch. During DELAY wiper operation, the signal circuit voltage is further reduced through the DELAY resistors. The body control module (BCM) monitors the voltage on the signal circuit to determine the delay interval between the low speed wiper motor cycles.
If the wiper switch is moved from a longer delay interval to a shorter delay interval, the BCM will command an immediate wipe cycle and reset the delay timer to the shorter delay interval.
Additionally, intermittent wiper operation is vehicle speed sensitive. As vehicle speed is increased or decreased, the wiper interval will also increase or decrease.

Low Speed Operation
When the wiper switch is in the Low position, voltage is supplied through an internal resistor to the signal circuit. The body control module (BCM) monitors the windshield wiper switch signal 1 circuit and energizes the wiper 1 relay which will operate the windshield wiper motor. The wiper motor will operate at low speed, since the wiper 2 relay is de-energized. Low speed can also be commanded with a scan tool by commanding Wiper Relay Cmd. ON and OFF.
High Speed Operation
In the High position, the windshield wiper/washer switch supplies voltage to both the wiper 1 and wiper 2 relay coils. This energizes both relays and allows battery voltage from the wiper 1 relay switched output to the switched input of the wiper 2 relay through its contacts and out the switched output of the wiper 2 relay to the high speed circuit of the windshield wiper motor. The windshield wiper motor will operate at high speed. During HIGH speed wiper motor operation, the wiper switch signal circuit is at the LOW speed signal voltage, and the body control module (BCM) supplies redundant voltage to the wiper relay via the wiper diode.

Wiper/Washer System Components
The Wiper/Washer System consists of the following components:
• Windshield wiper/washer switch
• Body control module (BCM)
• Wiper 1 relay
• Wiper 2 relay
• Wiper diode
• Windshield wiper motor
• Windshield washer pump
• Windshield washer nozzles
• Windshield washer solvent container
• Windshield wiper arm and blade assemblies
• Windshield wiper transmission
• WIPER/SW 10A fuse
• WIPER 25A fuse
Refer to Master Electrical Component List.

DTC B3715 02: Front Wiper Relay Drive Circuit Short to Ground
DTC B3715 05: Front Wiper Relay Drive Circuit Short to Battery or Open

Your best bet , take it to a qualified repair shop.

There should be a printed circuit board on the motor that controls the intermittent and park functions of the wipers.

Did you check the wiper relay's in the under hood fuse box ? There are two ,wiper run/park relay & wiper high low relay ! Also ,did you check fuse's ? fuse # 11 - 30amp location cental juction box . The wiper switch is a input to the GEM module . Generic electronic module . The module in most cases isn't the problem ! Learning how to test these electronic systems is , people do not know how to test so they just replace parts . What they should do is take the vehicle to ford certified Technician who has the knowledge and testing equipment to find an fix it .

The generic electronic module (GEM) receives inputs from the following:

• multifunction switch
• anti-lock brake control module (vehicle speed signal [VSS])
• ignition switch

The GEM uses these inputs to control the outputs to the following:

• windshield wiper high/low relay
• windshield wiper run/park relay
• windshield washer relay
• rear wiper motor relay
• rear window washer relay
• 
  GEM Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1240 Wiper Washer Rear Pump Relay Circuit Failure GEM GO to Pinpoint Test K . B1241 Wiper Washer Rear Pump Relay Circuit Short to Battery + GEM GO to Pinpoint Test K . B1342 ECU is Defective GEM CLEAR the DTCs. REPEAT the GEM self-test. If DTC B1342 is retrieved, INSTALL a new GEM. REFER to Section 419-10 . B1431 Wiper Brake/Run Relay Circuit Failure GEM If the windshield wipers are inoperative, GO to Pinpoint Test B .
  If the windshield wipers stay on continuously, GO to Pinpoint Test C . B1432 Wiper Brake/Run Relay Circuit Short to Battery GEM GO to Pinpoint Test B . B1434 Wiper Hi/Low Speed Relay Coil Circuit Failure GEM GO to Pinpoint Test D . B1436 Wiper Hi/Low Speed Relay Coil Circuit Short to Battery GEM GO to Pinpoint Test D . B1438 Wiper Mode Select Switch Circuit Failure GEM If the windshield wipers are inoperative, GO to Pinpoint Test B .
  If both the windshield and rear window wipers are inoperative, GO to Pinpoint Test L . B1441 Wiper Mode Select Switch Circuit Short to Ground GEM GO to Pinpoint Test C . B1446 Wiper Park Sense Circuit Failure GEM If the intermittent windshield wiper speed does not operate correctly, GO to Pinpoint Test E .
  If the speed dependent interval mode does not operate correctly, GO to Pinpoint Test G .
  If both windshield and rear wipers are inoperative, GO to Pinpoint Test L . B1450 Wiper Wash/Delay Switch Circuit Failure GEM If the intermittent windshield wiper speed does not operate correctly, GO to Pinpoint Test E .
  If the wash and wipe function does not operate correctly, GO to Pinpoint Test F .
  If both the windshield and rear wipers are inoperative, GO to Pinpoint Test L . B1453 Wiper Wash/Delay Switch Circuit Short to Ground GEM If the windshield wipers stay on continuously, GO to Pinpoint Test C .
  If the wash and wipe function does not operate correctly, GO to Pinpoint Test F . B1458 Wiper Washer Pump Motor Relay Circuit Failure GEM GO to Pinpoint Test F . B1460 Wiper Washer Pump Motor Relay Coil Circuit Short to Battery GEM GO to Pinpoint Test F . B1473 Wiper Low Speed Circuit Motor Failure GEM If the windshield wipers are inoperative, GO to Pinpoint Test B .
  If the windshield wipers do not operate at high or low speed correctly, GO to Pinpoint Test D .
  If the intermittent windshield wiper speed does not operate correctly, GO to Pinpoint Test E . B1475 Accessory Delay Relay Contact Short to Battery GEM REFER to Section 501-11 . B1476 Wiper High Speed Circuit Motor Failure GEM If the windshield wipers are inoperative, GO to Pinpoint Test B .
  If the windshield wipers do not operate at high or low speed correctly, GO to Pinpoint Test D .
  If the intermittent windshield wiper does not operate correctly, GO to Pinpoint Test E . B1611 Rear Wiper Mode Switch Circuit Failure GEM GO to Pinpoint Test H . B1614 Rear Wiper Mode Switch Circuit Short to Ground GEM GO to Pinpoint Test I . B1820 Rear Wiper Motor Up Relay Circuit Short to Battery + GEM GO to Pinpoint Test H . B1839 Rear Wiper Motor Circuit Failure GEM GO to Pinpoint Test H . - All other DTCs. GEM REFER to Section 419-10

The windshield wiper motor is a smart wiper motor with an integrated electronics module. The internal components of the motor are the high/low relay, washer pump relay, and the run/park relay and associated electronics.
The windshield wiper motor receives its inputs from the windshield wiper/washer switch. These signals are ground reference signals. When the switch is placed in different positions, various input signals are selected and sent through circuits to the motor. The windshield wiper motor module identifies these selected input signals and activates the motor to the selected function.!
Your probably going to need a new wiper motor ! ! ! But you should always test before replacing parts !
Visual Inspection Chart Mechanical Electrical

• Windshield washer pump hoses
• Windshield wiper mounting arm and pivot shaft

• Bussed electrical center (BEC) fuse 10 (30A)
• Smart junction box (SJB) fuse 3 (10A)
• Circuitry
• Windshield wiper motor
• Windshield washer pump
• Windshield wiper/washer switch

• The wipers stay on continuously

• Circuitry
• Windshield wiper motor
• Windshield wiper/washer switch

• Go To Pinpoint Test C .

PINPOINT TEST C: THE WIPERS STAY ON CONTINUOUSLY CAUTION: Use the correct probe adaptor(s) when making measurements. Failure to use the correct probe adaptor(s) may damage the connector.
Test Step Result / Action to Take C1 CHECK THE WINDSHIELD WIPER/WASHER SWITCH

• Key in OFF position.
• Disconnect: Windshield Wiper/Washer Switch C2137.
• Carry out the windshield wiper/washer switch component test. Refer to Wiring Diagrams Cell 149 for schematic and connector information.
  
• Does the windshield wiper/washer switch pass the component test?

Yes
GO to C2 .

No
INSTALL a new windshield wiper/washer switch. REFER to Wiper/Washer Switch in this section. C2 CHECK CIRCUITS 56 (DB/OG), 58 (WH), 61 (YE/RD), AND 63 (RD) FOR A SHORT TO GROUND

• Disconnect: Windshield Wiper Motor C125.
• Measure the resistance between the windshield wiper motor C125, harness side and ground as follows:
  
  Windshield Wiper Motor C125 Pin Circuit C125-10 56 (DB/OG) C125-11 58 (WH) C125-1 63 (RD) C125-9 61 (YE/RD)
  
  
• Are the resistances greater than 10,000 ohms?

Yes
GO to C3 .

No
REPAIR the circuit(s). TEST the system for normal operation. C3 CHECK FOR CORRECT WINDSHIELD WIPER MOTOR OPERATION

• Disconnect all the windshield wiper motor connectors.
• Check for:
  • corrosion.
  • pushed-out pins.
• Connect all the windshield wiper motor connectors and make sure they seat correctly.
• Operate the system and verify the concern is still present.
• Is the concern still present?

Yes
INSTALL a new windshield wiper motor. REFER to Wiper Motor in this section. TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
You

Sorry , no adjustment .
Wiper/Washer System Components
The Wiper / Washer System consists of the following components:
• Windshield wiper / washer switch
• Windshield wiper system module / motor
• Windshield washer fluid pump
• Windshield washer fluid level switch
• WPR 25A fuse
Wiper / Washer System Operation
The windshield wiper motor module is part of the windshield wiper motor cover and controls the wiper motor operation. The windshield wiper motor is a 2 speed motor. Windshield wiper DELAY operation is a low speed wiper motor function with a variable delay interval between the wipe cycles. The DELAY interval is controlled through a series of resistors within the wiper / washer switch.
Park Position Operation
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. If the ignition is turned off while the wipers are in mid-cycle, the wipers will stop immediately where they are. The wipers will park the next time the ignition is cycled to the ON position.

Do you know how to do diagnostic's ?

Wipers Blades Do Not Park
Step
Action
Yes
No
Schematic Reference: Wiper/Washer Schematics
Connector End View Reference: Wiper/Washer Connector End Views
DEFINITION: This table diagnoses the wipers operate normally but will not return to the park position when the wiper operation is cancelled.
1
Did you perform the Diagnostic System Check - Vehicle?
YES - Go to Step 2
NO - Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2
Turn ON the ignition, with the engine OFF.
Move the wiper switch to the LO position.
Move the wiper switch to the OFF position.
Do the front wipers advance to the park position?
YES - Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
NO - Go to Step 3
3
Turn the ignition switch to the RUN position.
Turn the wiper switch to OFF.
Disconnect the wiper/washer switch connector.
Do the wipers park?
YES - Go to Step 7
NO - Go to Step 4
4
At the wiper/washer switch connector, measure the voltage of the windshield wiper switch signal 2 circuit.
Does the voltage measure greater than 1.0 volts?
YES - Go to Step 5
NO - Go to Step 8
5
Reconnect the wiper/washer switch connector.
Disconnect the wiper motor connector.
Measure the voltage of the windshield wiper switch signal 2 circuit.
Does the voltage measure greater than 1.0 volts?
YES - Go to Step 6
NO - Go to Step 8
6
Repair a short to battery positive voltage in the windshield wiper switch signal 2 circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
YES - Did you find and correct the condition?
NO - Go to Step 9
--
7
Replace the wiper/washer switch. Refer to Turn Signal Multifunction Switch Replacement in Steering Wheel and Column - Tilt.
YES - Did you complete the replacement?
NO - Go to Step 9
--
8
Replace the wiper motor cover. Refer to Wiper Motor Cover Replacement .
YES - Did you complete the replacement?
NO - Go to Step 9
--
9
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2

A wire is shorted out or part of the switch is bad.