Black Button Under Dash - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Audio and Electronics Discuss car audio, video, navigation, alarms, and other electronics here.

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  #1  
Old 09-28-2008, 05:27 PM
xsaosinnerx xsaosinnerx is offline
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2002 Chevy TrailBlazer LT
Pewter Metallic 4.2L I6 4X4
Join Date: Aug 2008
Location: Florence, SC
Posts: 83
Black Button Under Dash

Alright, so I bought a used 2002 TB LT about two months ago. The first time I detailed it, and when I do this, I'm thorough. I found a wire tucked up by the steering column under the dashboard with a button on it. I fiddled with it and finally got it to do something. When the truck is running, If I hit the button, it turns off the odometer completely, and you can hear a click like a solenoid being activated. Now I saw one post about "odometer killers" but have never heard of such before. The truck has 92k miles on it, according to the odometer, but should I be worried. Does anyone have any general knowledge specific to TB and these sort of buttons? IS it legal?
Prior history of the vehicle.
It started out as fleet, it was fleet for two years, then it was privately owned for 11 months, then it was a company car, then I bought it.
So is it possible that the Fleet had it installed to keep the value of the car up?
The car is in excellent shape, and runs like a champ.
Thanks for reading, and thanks for any possible clues/help.

-Mark
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  #2  
Old 09-28-2008, 05:29 PM
ghoster ghoster is offline
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I am not sure that you could kill the odometer that way in a TB. They are set up a little funky. Are you sure the switch isn't just killing all your interior lights?
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  #3  
Old 09-28-2008, 05:31 PM
xsaosinnerx xsaosinnerx is offline
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2002 Chevy TrailBlazer LT
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I thought that, but when the car is running, the lights are on the dash and the rpm shows idle. when you hit this button, everything cuts off on the dash, no lights...The only way I can explain what it does, is that it bypasses everything on the dash..

here is a pic

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  #4  
Old 09-28-2008, 05:47 PM
91RS 91RS is offline
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Follow the wire and see where it goes?
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  #5  
Old 09-28-2008, 05:51 PM
WOOLUF1952 WOOLUF1952 is offline
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As far as being illegal, I believe a switch to disconnect the odometer would violate state and federal laws. You say the dash goes dark? Can you still drive? Could this be like the lockout used on emergency vehicals? It looks to professional manufactured to be something illegal.
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  #6  
Old 09-28-2008, 05:54 PM
xsaosinnerx xsaosinnerx is offline
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2002 Chevy TrailBlazer LT
Pewter Metallic 4.2L I6 4X4
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I would follow it, but I honestly don't feel comfortable taking the dash apart just yet. I reckon I could hit the button and drive around alittle bit and see if the mileage changes at all. If it does not change, that would be a head on the nail as to what it does, right?

Should I go to the dealership and notify them of it, not like they can do anything about it, maybe the dmv?
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  #7  
Old 09-28-2008, 06:04 PM
WOOLUF1952 WOOLUF1952 is offline
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2003 GMC Envoy SLT
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The DMV would be the best place. If you sell the vehical and it is found that the odometer has been tampered with you could be held liable. You could try doing a serch on something like Carfax and see if the mileage seems correct. Good luck
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  #8  
Old 09-28-2008, 06:23 PM
xsaosinnerx xsaosinnerx is offline
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2002 Chevy TrailBlazer LT
Pewter Metallic 4.2L I6 4X4
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Location: Florence, SC
Posts: 83
The mileage ads up on the car and carfax report. I made the dealer print me out a copy before I bought it, but I never really thought about that little switch till I read about odometer kill switches on here. The only reason I would suspect it, was because it was a fleet vehicle.
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  #9  
Old 09-28-2008, 06:33 PM
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06TrailSkillz 06TrailSkillz is offline
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It would be a remote switch for just the lights on the dash, is there an overlay on the guages something aftermarket?

I used to have one of those switches to control 12v power so i'd follow it... dont be afraid to take the dash apart follow the how tos on here i'll go step by step!

Let us know what u finds tho we'd all be interested!!
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  #10  
Old 09-28-2008, 06:55 PM
xsaosinnerx xsaosinnerx is offline
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2002 Chevy TrailBlazer LT
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