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Replace wiper motor board module - 2006 Cadillac CTS

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Can you please give me instructions on replacing the wiper motor pulse board module on my 95 Chevy Van G20?


This is a very simple procedure and will save you lots of money by replacing it yourself! A common replacement item on GM vehicles, it should be readily available at your local auto parts retailer and should take no more than a half-hour with just a couple of tools.


• Turn the ignition key to the OFF position.
• Remove the Connector Position Assurance (CPA) and disconnect the wiper motor electrical connector.
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• Remove the three screws that secure the cover to the wiper motor and remove the cover.
• Inspect for sealant on the inside of the cover and then discard the cover and screws. Important: If sealant was found on the old cover, it will be necessary to remove any old sealant from the motor housing in Step 6.
• Carefully remove the module (circuit board) from the wiper motor by lifting up on the end of the module electrical connector.
• If necessary, remove any old sealant from the wiper motor housing (refer to Step 4). Notice: When handling the new module in the next step, be careful not to damage or band the electrical contacts on the bottom side of the module.
• Install the module into the wiper motor housing, making sure that the module is fully seated. When fully seated, the edges of the module circuit board will be flush (even) with the motor housing along all sides.
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• Carefully apply a bead of silicone sealant, P/N 12345739 (or GE-162 sealant or equivalent) in the groove of the NEW cover (Figure 2). Remove any excess sealant that is outside of the groove. Important: Only apply enough sealant to fill the groove in the cover.
Install the new cover on the wiper motor housing and install the three new screws.
• Tighten the screws to 2.6 N·m (23 lb in).
• Reconnect the wiper motor electrical connector to the wiper motor assembly and install the CPA.
• Turn the ignition key to the ON position and check the wiper system for proper operation (delay/low/high/etc.).



May 04, 2011 | Chevrolet G20 Cars & Trucks

1 Answer

Delay wipers only work on high speed on 2000 chevy silverdo 1500 truck no delay


Hello, my name is Ben and I can help you with this problem. This is a very common problem with Chevy. You need what is known in most vehicles as a "pulse board". The pulse board is located inside the wiper motor control module. On many vehicles the pulse board is replaceable, unfortunately on your Silverado you must replace the entire Wiper Motor Control Module which is bolted onto the top of the wiper motor. To get to the wiper motor, first remove those little nut covers on the big end of the windshield wiper arms, if you slip a small screwdriver or your fingernail they just pop off. Now unbolt the windsheild wiper arms, before removing the wiper arms, mark their location on the windsheild with a grease pencil or magic marker. The arms are hard to remove, you need to kinda wiggle and pull at the same time, now that long plastic cowl needs to come off, those clips at the front edge just slide forward, then at each end lift up that rubber flap and remove those TORX screws. Remove the cowl and set it somewhere SAFE, it's easy to break. You will now see the control module mounted on the wiper motor, unplug the electrical connections and remove the TORX screws holding it to the motor. Assembly is the reverse of dis-assembly. If you have any trouble or questions, feel free to ask, Ben.

Nov 13, 2010 | 2000 Chevrolet Silverado

2 Answers

My wipers work when they want to don't always work when it's raining. Is there a recall on the windshield wiper motor for a 1997 Chevy Blazer?


I don't believe there is a recall but I've replaced a lot of the wiper control modules [glorified circuit board] on top of the wiper motor for similar problems. Something in the circuit board goes bad and causes the wipers to malfunction randomly. There are other things that can cause wipers not to work but I'd look there first

Jun 10, 2010 | 1997 Chevrolet Blazer

3 Answers

How do you replace the module and wiper motor?


The wiper motor is located under the hood cowl. Open your hood, pop off to the 2 decorative plastic covers at the corner of the hood/windshield and you should see a phillips head screw to remove on each side. After removing them, slide back the safety latch on the wiper arms and remove them from the gear. At this point, you should be able to pop off the cowl, as there will be 4 total pops holding it in place. Carefully slide it out around the wiper gears and lay in engine area, as if you move too far you will rip out washer pump hose. There are (3) 10mm bolts to remove to take out wiper arms/gears, 2 on the sides, 1 in the middle. After disconnecting the module plug, you can remove the apparatus so that you can access the #35 Torx screws and 13mm nut to remove the defective wiper motor. Install the new motor in the same fashion as removing it, and then follow the entire process in reverse to put everything back together.

May 08, 2010 | 2005 Hummer H2

2 Answers

Wipers only work on high speed. washer pump work too. I have no low speed or delay for wipers. Is this a switch problem or is there a relay modual under the hood that could be bad


Hello, this is a very common problem for Chevrolet. Your wiper motor control module is bad. It's mounted directly onto the wiper motor. On some models you can replace the "pulse board" inside the control module. If not you need to replace the entire wiper motor control module. It depends on your level of skill and parts availability.

Feb 02, 2010 | 1999 Chevrolet Express

1 Answer

Windshield wipers only run on high


Hi, this is a common GM problem. I'm assuming you mean the front wipers. The wiper motor control module is most likely defective. The module is mounted directly to the wiper motor. You can probe the plug going into the motor with a digital multi-meter while operating the switch to verify the switch is good. On some of these you can replace the "pulse board" inside the control module, on some you must replace the module. Or, I have located an entire wiper motor assembly for your vehicle on EBAY for $80.40. Of course if you go the EBAY route check with the seller for fitment and to be sure the module is on the motor he is selling. It would be easier to just replace the module. Good luck and if you need anymore info, just leave a comment.

Jan 24, 2010 | 1999 Chevrolet Venture

1 Answer

1999 gmc sierra wipers will only run on high. Any idea why?


The wiper motor control module needs replacing. On some models you can replace the "pulse board". On some you must replace the wiper control module which mounts directly to the windshield wiper motor. This is a very common GM problem.

Jan 19, 2010 | 1997 GMC Sierra

1 Answer

Wipers sometimes do not work on 1997 Bonneville SE


wiper module failures are common its mounted on the front of your wiper motor has a circut board that slides in ? sometimes the motor itself shorts out the board i would just replace the whole motor with a rebuilt unit ?

Aug 27, 2009 | 1997 Pontiac Bonneville

1 Answer

Windshield Wiper motor replaced, now wipers go wrong direction


This sounds like the park circuit is shorted.

Nov 25, 2008 | 1999 GMC Yukon

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