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Wait to start light coming on while driving

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Old Sep 15, 2006 | 10:47 PM
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Exclamation Wait to start light coming on while driving

OK guys, I'm driving down the road and notice my wait to start light(the little squiggly) is on. I also noticed my odometer is blank(no milage reading). Then it goes out and my odometer re-appears.

So I start paying more attention, I hear a couple of clicks under the dash and the wait to start squiggly comes on again along with the 4x4 light and the wipers come on by themselves. The wipers only move about 4 inches and then stop, I turn the wiper **** on and it does'nt work. The 4x4 light goes out very quickly and then the squiggly goes out. But the wipers still do not work. I pull up at the house and suddenly the wipers start to work with the ****.

I've used the search funtion and could not find any info on this. Has anyone seen or heard of this?
 
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Old Sep 15, 2006 | 10:58 PM
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i remember something about the gem module going bad and all kinds of strange thngs happening like that but im not sure what it all controls. maybe someone else can help you out more.
 
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Old Sep 15, 2006 | 11:14 PM
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Muktown, My 2002 has a VSM instead of a GEM. Plus the VSM has no wiper function and I replaced it about 6 months ago.
 
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Old Sep 15, 2006 | 11:19 PM
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Now that's a strange bunch of problems to have. WTS while driving and wipers coming on by themselves? Unfortunately, I have no idea what this may be, but I'm definately staying tuned to see what develops.
 
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Old Sep 16, 2006 | 04:56 AM
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we have just started doing wiring diagrams in school, and we have diagrams for 98-99 powerstroke engines. my teacher is getting a 2002 powerstroke diagram for me to have, let me look at it when i get it and see if there is any correlation...
you probably have a power wire to all of the idiot lights shorted out somewhere, and they probably can be fixed at once ultimately.
 
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Old Sep 16, 2006 | 05:17 AM
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I don't think I would use the truck if it were mine with all that strange stuff going on and no fuse's blowing. Burning very hard to replace harness's could result. I'd unhook the batteries till someone cyphers this for you.
 
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Old Sep 16, 2006 | 05:57 AM
  #7  
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Check your grounds at the batteries and frame/engine. It is odd because I thought the wipers were wired direct. I would start it, and shake the wire looms under the dash and hood. Have someone watch the WTS light while your doing that. Was it raining when this happened? The Haynes manual has got wiring diagrams in the back.
Is your alternator output sufficient? Low voltage could cause problems. Good Luck.

Duncan
 
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Old Sep 16, 2006 | 07:19 AM
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Principles of Operation

The vehicle security module (VSM) controls the following systems:

perimeter alarm
remote keyless entry (and panic feature)
computer-operated locks
autolamp

Inspection and Verification

Verify the customer concern by operating the system.
Visually inspect for obvious signs of electrical damage.

Chris Check your pass side battery.
 
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Old Sep 16, 2006 | 08:20 AM
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Thanks guys, I'm going to tincker with it today. I look foward to hearing what you find Kris. Alan, I'll check the battery and connections they are only a year old.
 
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Old Sep 16, 2006 | 08:54 AM
  #10  
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I've learned from experience that low voltage can cause some wierd problems (as in my radio) and the truck will still start. But man you got a lot of strange things going on all at once. Have fun and good hunting.
 
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Old Sep 16, 2006 | 09:45 AM
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I dunno; on my shop manuals the PCM and GEM control all the aux functions including the radio.

Apparently I'm just there to steer, shift and brake.
 
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Old Sep 16, 2006 | 03:47 PM
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Ok, between unhooking the negative cables on both batteries for 30 minutes(to reset the system), cleaning the terminals and reconnecting, all is well. I've driven it on and off all day long and the problem seems to have subsided. Hopefully, it was just a glitch, we'll see. Thanks to all for the advice.
 
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Old Sep 16, 2006 | 05:00 PM
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let us know if it comes back. i will check into it on monday, im curious anyway.
 
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Old Sep 16, 2006 | 05:28 PM
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Good to hear Chris. I have seen bad (high resistance) grounds cause all kinda probs on these trucks
 
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Old Sep 16, 2006 | 07:12 PM
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Originally Posted by strokin_it7.3
let us know if it comes back. i will check into it on monday, im curious anyway.
Sounds good, I'm curious as well. Thanks.

Hey Alan, I'll call you if it rears its ugly head.
 
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