Mechanics

WIPER MOTOR NOT WORKING CORRECTLY

2007 GMC Sierra

Electrical problem
2007 GMC Sierra V8 Four Wheel Drive Automatic 34500 miles

On my 2007 GMC Sierra the wiper motor wont shut off even w/ the ignition off, the intermittant speeds dont work, only a regular speed and high speed work. Washers work OK, directionals and high beam works OK which are controlled on the same lever that controls the wipers. I took a 12V test light and connected to the connection that goes into the wiper motor. I got power from the black wire and the black/white wire but I got nothing from the Purple, DK Green or yellow. Should I get some power from any of these 3 colors when I have the ignition on and the wiper switch on one of the intermittant speeds or high speed? Also I can hear a relay making noise when I first put the high speed on. Where are the relays located for the wiper motor. I can only locate the 25A fuse for the wiper motor. Also there is a M located on the wiper motor diagram, is that M for the module that is built into the the wiper motor and could that be my problem?
Thank you
Avatar
Chevy Dave
October 18, 2010.



Is this vehicle equipped with, or still have heated washers? If it does, for starters check this bulletin that may apply for the failure. There was also a campaign issued to disable that system, so there are no longer parts available to repair it.

#PIT4298: Unwanted Wiper and/or Washer Operation - keywords erratic heated intermittent phantom spray unwanted washer windshield wipe wiper - (Feb 26, 2007)

Subject: Unwanted Wipe and/or Washer Operation

Models: 2007 Cadillac Escalade, ESV, EXT

2007 Chevrolet Avalanche, Silverado, Suburban, Tahoe

2007 GMC Sierra, Yukon, Yukon Denali, Yukon XL, Yukon Denali XL

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern: Some customers may comment that windshield wiper and/or washers will not shut off, when equipped with RPO XA7, heated windshield washer fluid. Root cause may be leak at o-ring connector (X2) at the windshield washer solvent heater pigtail that allows washer solvent to wick down the harness.

Recommendation/Instructions: A production fix was implemented on February 12, 2007. For service, replace the windshield wiper heater module P/N 15897902

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

#10153B: Product Safety - Heated Windshield Washer Module Short Circuit - Permanently Disable and Remove Module - (Jul 20, 2010)

Subject: 10153A - Heated Windshield Washer Module Short Circuit - Permanently Disable and Remove Module

Models: 2006-2009 Buick Lucerne

2008-2009 Buick Enclave

2006-2009 Cadillac DTS

2007-2009 Cadillac Escalade, Escalade ESV, Escalade EXT

2008-2009 Cadillac CTS

2007-2009 Chevrolet Avalanche, Silverado, Suburban, Tahoe

2009 Chevrolet Traverse

2007-2009 GMC Acadia, Sierra, Yukon, Yukon XL

2006-2009 HUMMER H2

2007-2009 Saturn OUTLOOK

Equipped with Heated Washer Fluid System (RPO XA7/CHW)

This bulletin is being revised to include: · A note in the service procedure for dealers to confirm that the customer is aware that this safety recall is being performed on their vehicle prior to performing the repair.

· A T labor code for customers who refuse to have the recall performed. This labor code will NOT close the recall. If a customer refuses to have the recall performed, dealers are to provide the customer with a copy of the " Notice to Customer" document contained in this bulletin, record on the repair order " customer declined recall repair" and, if possible, have the customer sign the repair order. Request that the letter be placed in the vehicle glovebox for future reference by subsequent owners. If at a later date the customer, or a new owner, decides to have the recall performed, perform the repair and submit the claim using the appropriate V labor code.

· A clarification in the Q& A regarding proof of vehicle ownership.

Please discard all copies of bulletin 10153A, issued July 2010.

Condition
General Motors has decided that a defect, which relates to motor vehicle safety, exists in certain 2006-2009 model year Buick Lucerne; Cadillac DTS; HUMMER H2; 2008-2009 model year Buick Enclave; Cadillac CTS; 2007-2009 model year Cadillac Escalade, Escalade ESV, Escalade EXT; Chevrolet Avalanche, Silverado, Suburban, Tahoe; GMC Acadia, Sierra, Yukon, Yukon XL; Saturn OUTLOOK; and 2009 model year Chevrolet Traverse vehicles equipped with a heated washer fluid system (RPO XA7/CHW). A recall was implemented on some vehicles in 2008 to add a fuse to the HWFS control circuit harness to address the potential consequences of a printed circuit board electrical short. However, there have been new reports of thermal incidents on HWFS modules after this improvement was installed. These incidents resulted from a new failure mode attributed to the device’s thermal protection feature. Their significance varies from minor distortion to considerable melting of the plastic around the HWFS fluid chamber. In some circumstances, it is possible for the heated washer module to cause a fire.

Correction
Dealers/retailers are to permanently disable and remove the heated washer fluid system and compensate the customer for the loss of the feature.

Vehicles Involved
Involved are certain 2006-2009 model year Buick Lucerne; Cadillac DTS; HUMMER H2; 2008-2009 model year Buick Enclave; Cadillac CTS; 2007-2009 model year Cadillac Escalade, Escalade ESV, Escalade EXT; Chevrolet Avalanche, Silverado, Suburban, Tahoe; GMC Acadia, Sierra, Yukon, Yukon XL; Saturn OUTLOOK; and 2009 model year Chevrolet Traverse vehicles equipped with a heated washer fluid system (RPO XA7/CHW), and built within these VIN breakpoints: Year
Division
Model
From
Through

2008
Buick
Enclave
8J100047
8J308014

2009
Buick
Enclave
9J100004
9J135302

2006
Buick
Lucerne
6U103754
6U257622

2007
Buick
Lucerne
7U100002
7U237645

2008
Buick
Lucerne
8U100004
8U211362

2009
Buick
Lucerne
9U100001
9U116595

2008
Cadillac
CTS
80100025
80216491

2009
Cadillac
CTS
90100002
90135391

2006
Cadillac
DTS
6U100001
6U257627

2007
Cadillac
DTS
7U100001
7U237650

2008
Cadillac
DTS
8U100001
8U211363

2009
Cadillac
DTS
9U100002
9U128797

2007
Cadillac
Escalade
7R100158
7R431230

2008
Cadillac
Escalade
8R100004
8R279185

2009
Cadillac
Escalade
9R100001
9R125276

2007
Cadillac
Escalade ESV
7R136311
7R431231

2008
Cadillac
Escalade ESV
8R100011
8R279197

2009
Cadillac
Escalade ESV
9R100011
9R125271

2007
Cadillac
Escalade EXT
7G100001
7G320750

2008
Cadillac
Escalade EXT
8G100005
8G313669

2009
Cadillac
Escalade EXT
9G100001
9G122136

2007
Chevrolet
Avalanche
7G100002
7G322305

2008
Chevrolet
Avalanche
8G100012
8G315027

2009
Chevrolet
Avalanche
9G100020
9G121518

2007
Chevrolet
Silverado
71500004
71734672

7E500001
7E604226

7F500001
7F567567

7G500016
7G557687

7Z500005
7Z653657

2008
Chevrolet
Silverado
81100005
81340457

8E100001
8E218216

8F100003
8F228335

8G100043
8G315252

8Z100001
8Z333413

2009
Chevrolet
Silverado
91100005
91102391

9E100006
9E104929

9F100005
9F105871

9G100027
9G121505

9Z100001
9Z109458

2007
Chevrolet
Suburban
7G100007
7G322306

7J100041
7J407405

7R136280
7R431211

2008
Chevrolet
Suburban
8G100022
8G315271

8J100033
8J253530

8R100072
8R279198

2009
Chevrolet
Suburban
9G100007
9G100157

9J100010
9J106264

9R100026
9R122925

2007
Chevrolet
Tahoe
7J100012
7J407401

7R100001
7R431218

2008
Chevrolet
Tahoe
8J100001
8J253522

8R100036
8R279200

2009
Chevrolet
Tahoe
9J100016
9J106191

9R100006
9R127248

2009
Chevrolet
Traverse
9S100028
9S102836

2007
GMC
Acadia
7J100107
7J175624

2008
GMC
Acadia
8J100942
8J308089

2009
GMC
Acadia
9J100001
9J135301

2007
GMC
Sierra
71500001
71734581

7E500003
7E604195

7F500004
7F567564

7G500025
7G557569

7Z500022
7Z649462

2008
GMC
Sierra
81100009
81340465

8E100003
8E218316

8F100002
8F228333

8G100047
8G315264

8Z100006
8Z333464

2009
GMC
Sierra
91100004
91103306

9E100012
9E104323

9F100001
9F105861

9G100028
9G121509

9Z100002
9Z109742

2007
GMC
Yukon
7J100010
7J407398

7R100040
7R430995

2008
GMC
Yukon
8J100008
8J253725

8R100012
8R279019

2009
GMC
Yukon
9J100002
9J107575

9R100097
9R122047

2007
GMC
Yukon XL
7J108390
7J407402

7R137014
7R431195

2008
GMC
Yukon XL
8J100035
8J253708

8R100003
8R277305

2009
GMC
Yukon XL
9J100009
9J106263

9R100051
9R121349

2006
HUMMER
H2
6H100020
6H118851

2007
HUMMER
H2
7H101164
7H108642

2008
HUMMER
H2
8H100001
8H110379

2009
HUMMER
H2
9H100002
9H101608

2007
Saturn
OUTLOOK
7J100003
7J175620

2008
Saturn
OUTLOOK
8J100640
8J308082

2009
Saturn
OUTLOOK
9J100003
9J135270

Important: Dealers/retailers are to confirm vehicle eligibility prior to beginning repairs by using the Investigate Vehicle History link. Not all vehicles within the above breakpoints may be involved.

For dealers/retailers with involved vehicles, a listing with involved vehicles containing the complete vehicle identification number, customer name, and address information has been prepared and will be provided to US and Canadian dealers/retailers through the GM GlobalConnect Recall Reports, or sent directly to export dealers. Dealers/retailers will not have a report available if they have no involved vehicles currently assigned..

The listing may contain customer names and addresses obtained from Motor Vehicle Registration Records. The use of such motor vehicle registration data for any purpose other than follow-up necessary to complete this recall is a violation of law in several states/provinces/countries. Accordingly, you are urged to limit the use of this report to the follow-up necessary to complete this recall.

Factoryjack
Oct 18, 2010.
My 2007 GMC Sierra does not have or never did have the heated washer fluid nor does it have the rain sensor on it, It only have intermitant wipers on it.

Tiny
Chevy Dave
Oct 19, 2010.
I got a check engine light on after I was checking around the fuses and relays under the hood cause I wanted to see which relay was controlling the wipers so I started pulling one relay out at a time to see if one would shut the wiper motor off. Didn't find that relay but after I put everything back together and pulled the truck back into the garage a check engine light was on that was never on before, so I ran over to Auto Zone. They put their code reader on it and it came up P1682 which is a ignition 1 switch circuit2 problem. The check engine light has since gone off and I'M not sure if that light came on because I was pulling the the relays off and on in the under the hood fuse box.

Tiny
Chevy Dave
Oct 19, 2010.
I would suspect the light and corresponding code was created by your checking. The relays in the underhood fuse block are WIPER CONTROL PCB, and WIPER SPEED PCB, and there should be a legend under the cover that illustrates the fuses and relays. It is possible that the relays are not serviceable and part of the fuse block, otherwise known as underhood bussed electrical center(UBEC). The wiper switch is a direct input to the body control module, and it is responsible for controlling the wipers based on requests, so it is a possible fault. With a scan tool, you could view BCM data, and determine if the BCM is showing that the wipers are being requested. You said in your first post, that you had power on the black/white wire, is that correct, and was the connector connected to the motor? If it was disconnected, you should not have had power on that wire, it is hard wired to ground. The purple wire should have had power, but only in high speed. You might be able to isolate this to a faulty UBEC, by either disconnecting the BCM, or removing power to it, here is what it shows for location; Body Control Module (BCM)
On the lower left side of the I/P to the left of the steering column

Before disconnecting the BCM, try this first, It seizes to amaze me what it can correct. Disconnect both battery cables, and short them together either by touching or using a jumper wire. Leave it connected for a minute or so. Reconnect the battery, and check the operation. If nothing has changed, disconnect the BCM connector X1(light green) and see if the wipers stop. This houses the inputs from the wiper switch. Get back to me with the results.

Factoryjack
Oct 20, 2010.