GM Truck Club
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 5 of 5
  1. #1

    Default Rear wiper washer fix.....

    Silly fix, but maybe it will help someone else.

    I could not get the rear washer to work. Today I took the whole bottle and pump assembly out ( which is really quite easy) and started testing components. Removed each pump separately, and plugged them back into the wiring harness. Both were working fine........., so what is the problem? I took a look into the reservoir and saw that there was some debris floating around in there, so a good rinse out and I felt better about things, but didn't know for sure if it would now work. here comes the bright idea......given the debris, I thought that perhaps the line was plugged. I decided to blow a little compressed air through the line, and I here a POP!! There is a connection in the line back behind the driver's side rear wheel by the frame rail.......with a little check valve in-line to prevent the vertical part of the line from draining back. The line popped out at the check valve. So I pull the check valve out and blow some air through while holding it in a rag.......out comes some black organic looking splooge into the rag. Check valve seems fine now, reinstall, blow air up to the wiper and out comes the washer fluid!

    Reassemble and squirt away!

    Parts required - ZERO
    Time 30 minutes
    Smile on my wife's face that it now works, priceless!

    Kinda silly, but it might help someone else down the line.
    '01 Burb, '02 Jetta Wagon (turbo, shhhhh!), and '78 Bug Vert

  2. #2

    Join Date
    Aug 2008
    East of Branson, Missouri
    Blog Entries


    I'm sure someone will find use with this input. Thanks!

    "The Sarge"
    1999 Chevy Suburban LT- K2500
    7.4 454 Vortec, 4WD
    305/70/16 on Eagle Alloy

  3. #3


    I'm going to try this... thanks. Also, intend to replace replace the windshield wiper fluid sensor (shows low fluid level on dash even when full).

  4. #4


    Before you go replacing sensors, test them. Get a DVOM (digital volt/ohm meter) and test the switch. When the tank is full, it probably should read 0 ohms, also known as continuity. When the level's low, it'll probably show as a dead open. If that checks out, the sensor's fine, and it's probably the wiring somewhere. Start chasing it down and find the issue. A Haynes manual will be handy for this, as they have most of the wiring schematic in the back.

    1991 Chevy Suburban 1/2 ton 2WD w/ chevy SBC 350-3/4 ton drivetrain upgrade w/4.10 gears 200K miles
    2005 Saturn ION-2 Stock 277K miles
    1982 Bronco, 1993 Bronco (sold), 1971 M35A2 Deuce and a Half

    There are 10 kinds of people, those who understand binary, and those who dont...

    Remember kids, the only difference between screwing around and science is writing it down- Adam Savage

  5. #5


    Thank you - I'll try that... save $30 if the sensor isn't the problem. Let you guys know in a few weeks what I find out.

Similar Threads

  1. Washer fluid for rear window?
    By bruceb3 in forum Chevy Tahoe Forum (GMC Yukon, Cadillac Escalade)
    Replies: 2
    Last: 04-20-2011, 04:30 PM
  2. Suburban Rear Window Washer
    By moosetags in forum Chevy Suburban Forum (GMC Yukon XL)
    Replies: 1
    Last: 03-06-2010, 05:18 PM
  3. Leak In Suburban Rear Windshield Washer
    By Tom Evans in forum General Chevy & GM Tech Questions
    Replies: 5
    Last: 02-08-2010, 08:30 PM
  4. Anyone have a rear wiper motor go out?
    By silveradojc in forum Chevy Tahoe Forum (GMC Yukon, Cadillac Escalade)
    Replies: 0
    Last: 11-19-2009, 04:53 PM
  5. 03 tahoe rear wiper
    By bigbrett in forum Chevy Tahoe Forum (GMC Yukon, Cadillac Escalade)
    Replies: 2
    Last: 12-17-2007, 04:47 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts