Once it's set in the BCM (CCM) it's there for ever (90 up corvette) The dash cluster is only a read out on these cars.
How To Disconect The Odometer ??
Drifting
Joined: Sep 2005
Posts: 1,867
Likes: 3
From: Pasadena Maryland
The mileage is stored in the CCM, under the dash behind the radio. Only a TECH1 scan tool can program a CCM and only before it sees 100 miles. After the CCM sees 100 miles it is locked for good.
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
-- Joe
Burning Brakes
Joined: Aug 2006
Posts: 1,189
Likes: 0
From: Houston PA
I dont know about changing milage, but the speedo/odometer can be disconected. Kind of. It can be done on a manual, but when done with an auto, because the transmission looks to the speedo for shift points, makes the auto almost undrivable.
Safety Car
Joined: Nov 2004
Posts: 4,359
Likes: 57
From: Mundelein Illinois
Yes it is and you can get in a lot of trouble for doing it, but i have seen it done. I've seen guys backwards in leases and they will do anything not to buy the car. The over mileage charge can be more than the car is worth.
Last edited by spedaleden; Apr 30, 2008 at 10:14 PM.
Burning Brakes
Joined: Sep 2005
Posts: 1,058
Likes: 2
From: Deep inside GM
In a C4, it's flat out wrong. The mileage is not stored in the PROM in a 90-96 Vette. It's in the CCM.
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Safety Car
Joined: Nov 2004
Posts: 4,359
Likes: 57
From: Mundelein Illinois
I agree with that and the chip inside the CCM can be reprogramed. I used to call on the companies that reburbish the electronics for GM, Ford and Chrysler. They can set the mileage in the new CCM to match the old one. When a car gets a new cluster or CCM a sticker gets placed on the drivers door stating that the cluster has been changed.
Drifting
Joined: Sep 2005
Posts: 1,867
Likes: 3
From: Pasadena Maryland
If that is true than anybody can reset their mileage any time they want to. Tech 1 tools are on ebay for less than $500.00 all day and night. So you might as well forget about LOW MILEAGE cars?
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
I was offered a low mile CCM for $100 last night by a member for my dash swap.
-- Joe
Racer
Joined: Sep 2007
Posts: 284
Likes: 0
From: Cerritos/L.A. California
I agree with that and the chip inside the CCM can be reprogramed. I used to call on the companies that reburbish the electronics for GM, Ford and Chrysler. They can set the mileage in the new CCM to match the old one. When a car gets a new cluster or CCM a sticker gets placed on the drivers door stating that the cluster has been changed.
Instructor
Joined: Apr 2005
Posts: 199
Likes: 0
From: old bridge nj
if its truly a low mileage car, there should be a paper trail of service records that can tell the story. that along with your eyeball should give you a pretty good indication on the milage accuracy.
I am pretty shocked that it's this easy to tamper with after reading this thread.
I guess in the end, there is still a level of trust that must be given to the seller.
I am pretty shocked that it's this easy to tamper with after reading this thread.
I guess in the end, there is still a level of trust that must be given to the seller.
