DrBoost
DrBoost UltimaDork
10/25/14 5:53 a.m.

I dont know, maybe swapped in anothet IP? But you can ask the techs to look at the ECM. The ECM should have its own ticker counting miles. They wont match perfectly, but close.

chandlerGTi
chandlerGTi SuperDork
10/25/14 6:07 a.m.

There isn't a way I know of, lots of lease cars have their speedometer fuse pulled which in GM cars also shut of the connection to the odometer. Anyone with a low mileage Tahoe/Suburban/etc is suspicious in my mind lol.

This is old info, not sure it works now but it certainly did up to the mid 00's

Basil Exposition
Basil Exposition Dork
10/25/14 6:18 a.m.

Look on eBay and you can find devices for sale that will do this.

Grtechguy
Grtechguy UltimaDork
10/25/14 6:30 a.m.

Are you sure the sticker is for that vehicle?

ProDarwin
ProDarwin UltraDork
10/25/14 6:31 a.m.

I know saturns with a digital OD, the mileage comes from the PCM (ecu). You can't tamper with the odometer directly, but replacing the PCM with a lower mileage one would accomplish the same thing.

Ian F
Ian F UltimaDork
10/25/14 8:07 a.m.

I believe it's possible with '00 era VAG ECU's, but you need special ($$$$) software to do it.

patgizz
patgizz PowerDork
10/25/14 8:30 a.m.

have you checked carfax?

Dr. Hess
Dr. Hess MegaDork
10/25/14 9:07 a.m.

They bust "rings" doing this stuff all the time. Some google news searching should bring up some articles.

novaderrik
novaderrik PowerDork
10/25/14 11:43 a.m.
Grtechguy wrote: Are you sure the sticker is for that vehicle?

does the rest of the vehicle tell you that it's got lower miles or higher miles?

it's 13 years old and it's a minivan... i'd assume that the higher mileage is the right mileage..

i must be the only person left in the world that doesn't give a crap how many miles are on something as long as it's in good shape and functional..

The Canadian
The Canadian New Reader
10/25/14 1:35 p.m.

see i'm the opposite. my 99 montana gained almost 33500 miles in 11 days. so i guessed my OD was changed out. that could be the cause.

madmallard
madmallard HalfDork
10/25/14 3:20 p.m.

if its stored directly in the ecu itself, then the value is being writted to some kind of ROM based on a sensor reading somewhere.

Kenny_McCormic
Kenny_McCormic PowerDork
10/25/14 3:28 p.m.
novaderrik wrote: i must be the only person left in the world that doesn't give a crap how many miles are on something as long as it's in good shape and functional..

If they're willing to lie about the mileage, who knows what else they're lying abut. Things like service history, hidden/improperly repaired crash damage that could kill you next wreck, things of that nature.

I don't pay much attention to mileage either, I do pay attention to getting scammed.

HappyAndy
HappyAndy UltraDork
10/25/14 4:42 p.m.

I've never done it with a car, but on many of the computer controlled industrial vehicles that I work on, changing the hour meter is easy with the right equipment, and some information from a page that is not in the regular version of the service manual. Generally, hours are added to a new replacement control unit, because they come set at zero.

novaderrik
novaderrik PowerDork
10/25/14 5:00 p.m.

the electric odometer in my 94 Caprice 9C1 would just randomly decide to add 1000 miles from time to time.. saw it happen on a few occasions..

mazdeuce
mazdeuce UberDork
10/25/14 5:06 p.m.

The information is either stored in the cluster or the ECM. Swapping for a lower mileage version would change the mileage. Depending on the car, the ECM may have a record of the VIN either in it's brain or on the case. I'd start there.
The biggest problem is you have to prove THEY did it and did it with ill intent. That might be difficult.

ProDarwin
ProDarwin UltraDork
10/25/14 6:45 p.m.
novaderrik wrote: i must be the only person left in the world that doesn't give a crap how many miles are on something as long as it's in good shape and functional..

In NC, by default, if you car is more than 10 years old, the odometer status is not printed on the title (i.e. no guarantee of accuracy). You can go out of your way to get an additional form to disclose it though. Pretty dumb if you ask me, as there are many 2004 and older cars where odometer would still matter to many people. S2K, Boxter, etc.

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