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Username Post: 1995 wiper switch change        (Topic#249096)
kashin 
Forum Newbie
Posts: 64
kashin
Loc: Mt.Pleasant, Pa.
Reg: 09-12-10
09-12-10 08:41 AM - Post#1974883    

I have a 1995 tahoe and I have a wiper problem. When i use the wipers they dont stop at the cowl,they continue to work until they want to stop which may be 3or 4 minutes later ,and they stop at half way,1/4 way,it dont matter. If the problem is the switch on the column, how do I change it. I took all the plastic off around the column and it appears that the steering wheel needs to be pulled to get to the bolts to remove the switch. I dont want to mess with this being that it has a airbag and I am not familiar with this removal. Any help if it be the switch or wiper motor and or switch removable. Thank you.



 
fritz1990 
Dedicated Enthusiast
Posts: 6514
fritz1990
Age: 57
Loc: Kansas
Reg: 02-16-03
09-12-10 08:50 AM - Post#1974888    
    In response to kashin

Do a search but it sounds like you need the circut board that is on the drivers side firewall with a black plastic cover with 2 or 3 torx screws holding on the cover. Unplug the wiring harness and remove the screws. Change out the circut board. Common problem on the '95-'98.

Regards, Jeff

1998 K1500 6.5 Coal burner
1965 C10 with 498 BBC AFR Heads
1964 C10 Ran 348W for 6 years, now SBC.

Corvettes owned: '74 '77 '78 L82 Silver Anniversary, 2002 LS1

Don't have a nervous come together!

http://picasaweb.google.com/fritz199090


Edited by fritz1990 on 09-12-10 08:51 AM. Reason for edit: No reason given.

 
someotherguy 
Senior Moderator
Posts: 28961
someotherguy
Age: 49
Loc: Texas
Reg: 08-01-03
09-12-10 09:00 AM - Post#1974895    
    In response to fritz1990

For wipers that don't work when you need them to, not all speeds work, stop in the middle of the windshield, stop erratically or won't stop, etc. pretty much the majority of wiper motor issues with our trucks - the main cause is cracked solder joints on the wiper motor circuit board.

If you have a soldering iron and electronics (rosin core) solder, you can fix the board within a few minutes, faster than you can drive to the parts house and buy a new one. I prefer keeping the easily fixed original board vs. a chinese-made replacement. Besides, free fix = winner.

(Some year models were covered under a recall and you can get the board replaced at the dealer.)

The 5 pins holding the harness socket to the board are what get cracked solder joints, causing all kinds of odd behavior. The cracks aren't always visible without magnification, so just resolder the 5 points and put it back in.



Note that the very first pin out of the 5 is the ground path for the entire wiper motor. It's also the one most susceptible to cracking because of the strain on the connector from the wiring harness hanging off it, and vibration in general. Solder is not a strong mechanical connection, just electrical - it cracks from strain, vibration, temperature cycles, etc.

It's the #1 failure mode of these wiper motors, with any other reason running so far behind we can't call them #2, #3, etc. if you follow me. In all my experiences with these trucks, I've replaced ONE bad wiper motor, but repaired countless dozens and dozens of circuit boards. I used to knock them out for customers at $25 a pop while they waited, or for free if they had bought other parts/labor from me. I intentionally priced it just under what it costs to buy the replacement board.

I also use a good quality contact cleaner/preservative spray inside the socket and on the 3 tabs where the board plugs into the motor. CAIG DeOxit is my favorite.

Richard

06 Silverado ISS / 06 Silverado SS / 06 300C SRT8


 
fritz1990 
Dedicated Enthusiast
Posts: 6514
fritz1990
Age: 57
Loc: Kansas
Reg: 02-16-03
09-12-10 09:02 AM - Post#1974897    
    In response to someotherguy

What's the 6th one below? Solder it also? I have a couple boards but this is the first I have seen where to solder.

Richard

Regards, Jeff

1998 K1500 6.5 Coal burner
1965 C10 with 498 BBC AFR Heads
1964 C10 Ran 348W for 6 years, now SBC.

Corvettes owned: '74 '77 '78 L82 Silver Anniversary, 2002 LS1

Don't have a nervous come together!

http://picasaweb.google.com/fritz199090


Edited by fritz1990 on 09-12-10 09:03 AM. Reason for edit: No reason given.

 
someotherguy 
Senior Moderator
Posts: 28961
someotherguy
Age: 49
Loc: Texas
Reg: 08-01-03
09-12-10 09:19 AM - Post#1974906    
    In response to fritz1990

That's probably due to the person finding a sketchy looking solder joint there on the particular board.

By all means resolder any that look like they may be bad, however the 5 harness socket joints are the ones that crack on all of them.

Richard

06 Silverado ISS / 06 Silverado SS / 06 300C SRT8


 
kashin 
Forum Newbie
Posts: 64
kashin
Loc: Mt.Pleasant, Pa.
Reg: 09-12-10
09-12-10 11:02 AM - Post#1974943    
    In response to someotherguy

i will try the solder. hope thats it. would of never thought it would be something like that.thought for sure it was the wiper switch.Fingers crossed



 
someotherguy 
Senior Moderator
Posts: 28961
someotherguy
Age: 49
Loc: Texas
Reg: 08-01-03
09-12-10 11:32 AM - Post#1974959    
    In response to kashin

All your symptoms are classic of the cracked solder joint problem.

The switch itself rarely goes bad, except for on the old style column 88-94 there's a spring in the switch that sometimes fails, causing the control to not work properly.

Richard

06 Silverado ISS / 06 Silverado SS / 06 300C SRT8


 
kashin 
Forum Newbie
Posts: 64
kashin
Loc: Mt.Pleasant, Pa.
Reg: 09-12-10
09-12-10 02:53 PM - Post#1975041    
    In response to someotherguy

all though I am not one to solder,it seems as though you were correct.lol resoldered all 5 even though I did not see anything bad with it and now the wipers start and stop on command Now is there any way to check the sprayer motor? I unpluged from the motor and pushed the spray button and used a volt meter to both sides of the plug but did not get a reading.I could just get a new wiper sprayer motor but wondered if the problem was before that point. Thanks again for the fix on the first problem guys



 
JeremyB 
Senior Member
Posts: 751

Reg: 10-31-01
02-26-11 07:52 AM - Post#2052273    
    In response to kashin

The 6th spot that was soldered fixes a burnt trace on the circuit board that causes problems with the wipers stopping at the fully down position. I soldered in a piece of wire to repair



Edited by JeremyB on 02-26-11 07:58 AM. Reason for edit: No reason given.

 
someotherguy 
Senior Moderator
Posts: 28961
someotherguy
Age: 49
Loc: Texas
Reg: 08-01-03
02-26-11 09:10 AM - Post#2052300    
    In response to JeremyB

Thanks Jeremy, I've had to jumper a couple of boards for a burnt trace as well but in a different spot; the board design changed a few times so the layout varies a little. It doesn't seem to happen too often; I figure the burn is from running the board for a long time with cracked joints as the power will attempt to ground through wherever it can.

Richard

06 Silverado ISS / 06 Silverado SS / 06 300C SRT8


 
pplassm 
Forum Newbie
Posts: 1

Reg: 09-08-11
09-08-11 05:29 PM - Post#2135327    
    In response to someotherguy

Thank you for posting this thread. In 2 hours, I solved a problem that has bugged me for 2 years!



 
someotherguy 
Senior Moderator
Posts: 28961
someotherguy
Age: 49
Loc: Texas
Reg: 08-01-03
09-09-11 06:02 AM - Post#2135462    
    In response to pplassm

We love it when a plan comes together.



Richard

06 Silverado ISS / 06 Silverado SS / 06 300C SRT8


 
jeffs55 
Ultra Senior Member
Posts: 11788
jeffs55
Age: 60
Loc: Shelby Forest, Tennessee
Reg: 01-05-06
09-13-11 01:06 PM - Post#2136931    
    In response to someotherguy

Well, that just answered my next question as well.
Thanks guys.

Jeff
55 Handyman
66 F100 project
32 3 Window Coupe project
1996 Silverado short bed extended cab
1948 Studebaker Champion
1977 Toyota Celica Coupe
2000 Blazer 4X4
My Pics


 
markss 
Forum Newbie
Posts: 75

Age: 65
Loc: Palm Beach County, Fl
Reg: 12-02-11
10-28-12 03:27 PM - Post#2283778    
    In response to someotherguy

I just did this repair to my 89 C1500 with good results, but the circuit board didn't look like the one pictured in this post. It was rectangular about 2" x 4". Can't say if it is original but I'm not going to argue the results. Thanks for a great and informative post.
Mark



 
drifterdude 
Frequent Contributor
Posts: 1285

Reg: 09-04-08
10-29-12 08:31 AM - Post#2283999    
    In response to markss

nice someone else was helped by this. I was along time ago. In fact this post and repair is what made me joint the forum originally.

92 K1500:350 bored 30 over,built 700r4,Comp extreme energy cam,double roller timing set,shaved heads,Rancho RS9000XL series shocks with wireless my ride system,35 inch Mickey Thompson Baja Claws,Relocated 4x4 switch to rocker on Dash.
Other mods..


 
someotherguy 
Senior Moderator
Posts: 28961
someotherguy
Age: 49
Loc: Texas
Reg: 08-01-03
10-29-12 08:36 AM - Post#2284002    
    In response to markss

  • markss Said:
I just did this repair to my 89 C1500 with good results, but the circuit board didn't look like the one pictured in this post. It was rectangular about 2" x 4". Can't say if it is original but I'm not going to argue the results. Thanks for a great and informative post.
Mark


1988-1990 have a different style wiper motor but the circuit board in it can suffer bad solder joints, too. Glad you got yours working! It's a bit more trouble to get that board out from the old style motor but not too bad. It's cake on the 1991-up design.

Richard

06 Silverado ISS / 06 Silverado SS / 06 300C SRT8


 
vnllgrll62 
Forum Newbie
Posts: 3
vnllgrll62
Age: 57
Loc: Belcourt, ND
Reg: 02-21-15
02-21-15 12:21 PM - Post#2525070    
    In response to someotherguy

Thanks for the info, also a problem on my 91 Cheyenne (wiper issues). I joined the site as a silver member (for now), but don't look like site is showing so.

vnllgrll62


 
CowboyTrukr 
"8th Year" Silver Supporting Member
Posts: 4217
CowboyTrukr
Loc: Salt Lake City
Reg: 06-20-09
02-21-15 02:59 PM - Post#2525110    
    In response to vnllgrll62

It just takes a bit to update the site as this is Tony's passion, not necessarily his day job. He has some great support staff. It shows it now.

Welcome to ChevyTalk!

I grew up just outside of Minot.

Greg

'95 K1500 Z71 EC Short Step 5.7L+0.040/NV3500
'00 Explorer XLT 4.0 V6 Auto
'94 K2500 5.7 NV4500 ECLB - SOLD
‘87 GMC S15 SCLB 4.3 Auto - SOLD

"The only thing necessary for evil to triumph is for good men to do nothing" Sir Edmund Burke


 
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