Question about 2003 Chevrolet Silverado 2500HD

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Wipers fail intermittently

Wipers fail to work intermittently. Have replaced pulse board and relay. No change. No wiper/washer function at all and then starts randomly working again with no apparent problem.

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On my silverado 2003 the intermittant wiper/washer turned out to be a loose fitting fuse. The fuse is located on the outside face of the dash, you need to open the drivers door to remove the cover to acess the fuses. locate the fuse on the diagram, and wiggle it with your finger while the unit is malfunctioning to see it that is the problem. I bent the fuse blades slightly apart before reinserting the fuse and it hasn't been a problem since

Posted on Jan 29, 2009

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I own the same year and model truck, but haven't noticed that issue. I did own an '88 k2500 and had that problem. I know from my job experience that those particular trucks had an issue with the wiper motor ground path being faulty. You could check to make sure that the ground wire in the plug is actually "grounding", or the quick fix at least used to be, run a separate ground wire from the motor assembly to the body. There was also an issue with the control board on the motor, which I gather you've replaced. As I've mentioned I haven't encountered that issue with the later model trucks yet. Aside from the ground issue, it may be a faulty multifunction switch (turn signal lever/ wiper switch/ hazard switch assembly) I hope this helps.

Posted on Nov 13, 2008

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Try to any electricl loose contact electricl wiring circutry. tha may be.

Posted on Nov 12, 2008

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In the under hood fuse box , should have diagram inside the lid . Front wiper's or rear ? Front fuse # 36 - 25 amp. Plus Two relay's PCB hi and Wiper PCB relay . Wouldn't think this being fuse problem . Wiper switch , motor etc... The wiper's are control by a computer . BCM - body control module .

The windshield wiper/washer system consists of front and rear wipers. The front and rear wipers are operative when the vehicle is in accessory or run. The front wipers have 4 different modes: Mist, Intermittent, Low, and High. When the front wipers are in the intermittent mode, there are 5 delay modes to chose from, commanded by the windshield wiper washer switch through the body control module (BCM). The rear wipers has an only one mode.

If the fuse is bad , could have a short to ground or wiper motor pulling to much current (amps) . Fuse's don't just blow for no reason ! Could also have DTC'S - diagnostic trouble codes stored in the BCM .
DTC B3715
DTC B3873
DTC B3875
DTC B3922

DTC B3715 02: Front Wiper Relay Drive Circuit Short to Ground
The body control module (BCM) controls the wiper motor based on input from the windshield wiper washer switch. The BCM monitors the wiper washer switch through three separate signal circuits and a ground circuit. The windshield wiper switch high signal circuit is used to determine high speed wiper operation, the windshield wiper switch low signal is used to determine low speed, intermittent, and mist operation through the use of a resistor ladder, and windshield washer switch signal circuit is used to determine washer operation.
The BCM controls the windshield wiper motor through two output controls, controlling two different PCB relays which control the desired wiper speed, high or low.
DTC B3922 00: Front Wiper Function Select Circuit

The PCB relay's are non- servicable , replace fuse box . Soldered in Your best bet mit be to take it to a qualified repair shop .

Feb 20, 2017 | Pontiac Cars & Trucks

1 Answer

Cadillac Deville 99

Wiper/Washer System (Pulse) Schematics (w/o CE1)
Wiper/Washer System (Pulse) Schematics (w/CE1)

Which one does yours have ?

The switch could be bad or the windshield wiper / washer module . Do you own a DVOM - digital volt ohm meter ? Do you know how to do automotive electrical trouble shooting ? There are a few good videos on youtube on basic electrical trouble shooting an how to read wiring diagrams . Go to for free wiring diagrams . Check B+ voltage at the switch (in an out ) at the different speeds .Check for B+ voltage at the wiper washer module , it's part of the wiper motor .
The windshield wiper/washer system consists of a permanent-magnet depressed-park wiper motor assembly, a wiper transmission assembly, wiper arm and blade assemblies, a washer pump mounted on a washer solvent container, and a wiper/washer switch assembly.
The wiper/washer system is a pulse (delay) type. Pulse timing and demand wash functions are controlled electronically. Wiper/Washer System Description (Rainsense)
The windshield wiper/washer system consists of a Rainsense module, a permanent-magnet, depressed-park wiper motor assembly, a wiper transmission, wiper arm and blade assemblies, a washer pump mounted on a washer solvent reservoir, and a wiper/washer switch assembly.
The wiper/washer system is a rain sensing type. Rainsense functions are controlled electronically. 1
Was the Wiper/Washer System Check performed?
Go to Step 2
Go to Wiper/Washer System Check

Inspect the WIPERS fuse A9 for an open.
Is the fuse open?
YES - Go to Step 3
NO - Go to Step 4

Replace the WIPERS fuse.
Is the replacement complete?
Go to Wiper/Washer System Check

Disconnect the wiper/washer switch connector C202.
Turn ignition switch ON.
Connect a test light from connector C202, terminal E5 to ground.
Is the test light on?
YES - Go to Step 16
NO - Go to Step 5

Connect a test light from Accessory Relay, terminal A1, to ground.
Is the test light on?
YES - Go to Step 6
NO - Go to Step 11

Connect a test light from Accessory Relay, terminal A3, to ground.
Is the test light on?
YES - Go to Step 7
NO - Go to Step 12

Connect a test light from Accessory Relay, terminal B1 to terminal A3.
Is the test light on?
YES - Go to Step 8
NO - Go to Step 15

Inspect CKT 143 for an open or poor connection between connector C202 and the Accessory Relay.
Was an open or poor connection found?
YES - Go to Step 9
NO - Go to Step 10

Repair the open or poor connection in CKT 143.
Is the repair complete?
Go to Wiper/Washer System Check

Replace the the Accessory Relay.
Is the replacement complete?
Go to Wiper/Washer System Check

Repair the open in CKT 1040 or the power feed circuit to the WIPERS fuse.
Is the repair complete?
Go to Wiper/Washer System Check

Inspect the ACC fuse C13 for an open.

let me know if you make it this far an then I will send the rest of testing procedures !

Mar 09, 2016 | Cadillac DeVille Cars & Trucks

2 Answers

Can't find wiper relay on 94 ranger

Wipers do not require a relay. If your wipers are not functioning and a fuse is blown, the washer will not work either. If the washer works, check the wiper switch or the wiper motor, but wiper motors are normally very reliable.

May 17, 2011 | 1994 Ford Ranger Supercab

1 Answer

During a recent snowstorm, the weight of the snow was apparently too much for the rear wiper. It stopped mid-stream and is stuck. Simultaneously, the intermittent function of the front wipers also quit. ...

Check fuse no. 11 (10A) in the driver's under dash fuse/relay box. I suspect it is blown. It provides power for the rear wiper, both washers, and the intermittent wiper function for front and rear. It probably blew when your rear wiper got stuck.

Jan 31, 2011 | 2003 Honda Odyssey

2 Answers

My windsheld wipers wont work...we put a new motor on it but it still doesnt work

maybe it's not problem with motor maybe is switch of wipers,or cabels that conect to wipers motor,or its fuse.

Jan 26, 2011 | 2000 Buick Park Avenue

2 Answers

Windsheld wipers work intermittently. turn

the wiper motor seems to be defective, test that first

Jul 04, 2010 | 1998 GMC Safari

1 Answer

I have an intermittent problem with my wipers. They don't work one day and the next they do. Could this be pulse board problem or with the motor?

more than likely the pulse board loose at the wire connector. try wiggling the connector with wipers on (keeping hands away from wipers) then try tapping the motor with a small hammer.

Feb 11, 2010 | 1999 Chevrolet Tahoe

1 Answer

Windshield wipers work intermittent

Typical problem is the pulse board on the wiper motor fails on this year of truck. I have had both a 97 and 98 K1500 and had to replace on both. Sometimes the wipers would work, sometimes they would quit when I was driving. Part is less than $50 at auto parts stores. Follow the instructions included. Requires removing 4-5 torx (star) head screws. Takes less than 10 minutes.

Nov 24, 2009 | 1998 Chevrolet K1500

1 Answer

Wipers won't stop wiping.

Sounds like your intermittent wiper circuit is defective. Normally the intermittent feature is engaged by one of the functions on the multi-function switch (usually on the steering column). The circuit of the intermittent wiper periodically activates a relay that closes across the "Wiper On" switch. Your intermittent wiper circuit is likely defective and holding its relay closed (or the relay is stuck closed), thereby keeping the wipers on. Note: The wiper motor has an internal switch that opens when the wipers are in the park position and that is designerd to stop the wipers in the park position. When you turn on the wipers (or the intermittent relay is closed), the motor's internal switch is shunted such that the wiper does not stop at the park point of the cycle.

Apr 27, 2009 | Ford Explorer Cars & Trucks

1 Answer

Porsche Boxster Intermittent wiper does not work

possibly a relay the one for intermittent wipers is #16 front under dash relay panel

Jun 13, 2008 | 2003 Porsche Boxster

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