Question about 1998 GMC Sierra

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My windshield wipers don't always work. It seems they work fine when it's not raining but when it is raining there's about a 25% chance they'll work. I realize there was a problem with the motors on this model but I can hear the motor when this problem occurs so I'm not sure if it is the motor. I'm guessing it is but would like another opinion. Thanks.

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Posted on Jan 02, 2017

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SOURCE: Windshield Wiper motor replaced, now wipers go wrong direction

This sounds like the park circuit is shorted.

Posted on Nov 25, 2008

  • 1990 Answers

SOURCE: windshield wipers work very little only on high when they do

Check first for a Fuse that Has Blown. This is a Major Problem on the Chevy Trucks and there rally is not a Reason for it. Sometimes a Motor will work and Sometimes it will not. On My 95' Silverado SS 350 I had to go through 5 Motors before I found one that She Liked! That was 7 Years ago, It is Still workin!. Please Rate my Response, I need all the Help That I can Get! Thanks!

Posted on Jan 27, 2009

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SOURCE: windshield wiper motor

under the plastic cowl that the windshield wipers are on top of. removal of the wipers is nessecary. then removal of the cowl is next. and underneath all that should be the motor.

OR sometimes it is mounted on the firewall in the engine bay on either side usually can't miss it.

Posted on Feb 09, 2009

  • 3854 Answers

SOURCE: How to Replace a rear Windshield Wiper Motor

Unscrew inside panel on tailgate (3 screws-1 each side, 1 in the middle), Unclip and remove by pulling up and out towards the rear. Unscrew all screws holding steel plate down, Unclip plastic clips that hold the rod running behind the plate and unhook rod at top of that opens the window. Unclip wiring harnesses, remove wiper from the outside (1 nut holding it down)and unbolt the motor. It is pretty self explanatory once you have the steel plate removed, just remove and install the screws and clips in the same order and try it out before you put all your screws back into the steel plate since there are so many. Back window must be closed for wiper motor to work. To save yourself from replacing the motor with a new one, 9 out of 10 times it is simply the locking washer has come off of the gear inside the motor, if you pop off the plastic motor cover you will see the washer is off the gears are out of place. Just realigned the gear and replaced the washer with a "C" clip and you just hopefully saved your self some money. Good luck friend and hope this works. keep me posted, be glad to answer any question you may have. 

Posted on Jul 03, 2009

  • 521 Answers

SOURCE: Rear Windshield Wiper Motor

look closely/carefully for recessed screws. Most are usually pop on/ pop off types. Pull/ pry gently.

Posted on Jul 17, 2009

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