# 2002 Chevrolet 2500 - OBD reader suggestions **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** chevrolet\ **Created:** [May 4, 2020, 10:08pm UTC](https://community.cartalk.com/t/2002-chevrolet-2500-obd-reader-suggestions/163842 "2020-05-04T22:08:48Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![Edward\_Ramirez](https://avatars.discourse-cdn.com/v4/letter/e/2bfe46/32.png) [@Edward\_Ramirez](https://community.cartalk.com/u/Edward_Ramirez)\ **Post date:** [May 4, 2020, 10:08pm UTC](https://community.cartalk.com/t/2002-chevrolet-2500-obd-reader-suggestions/163842/1 "2020-05-04T22:08:48Z")
what obd reader can i purchase to read actual mileage,on a chevy van as opposed to what the odometer reads , i plan to travel across the states to live closer to my son.? ---
**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\ **Post date:** [May 4, 2020, 10:12pm UTC](https://community.cartalk.com/t/2002-chevrolet-2500-obd-reader-suggestions/163842/2 "2020-05-04T22:12:55Z")
Why are you asking ? Is your odometer broken ? ---
**Author:** ![Edward\_Ramirez](https://avatars.discourse-cdn.com/v4/letter/e/2bfe46/32.png) [@Edward\_Ramirez](https://community.cartalk.com/u/Edward_Ramirez)\ **Post date:** [May 4, 2020, 10:45pm UTC](https://community.cartalk.com/t/2002-chevrolet-2500-obd-reader-suggestions/163842/3 "2020-05-04T22:45:49Z")
i almost got burned on buying a used cargo van, i need to buy one but want to not buy a rolled back odometer/ van. ---
**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\ **Post date:** [May 4, 2020, 11:25pm UTC](https://community.cartalk.com/t/2002-chevrolet-2500-obd-reader-suggestions/163842/4 "2020-05-04T23:25:36Z")
Any vehicle over 10 years old is mileage exempt . So just evaluate anything that old on it’s current condition. Most dealers will say actual mileage unknown . Besides even if it wrong you can’t prove who changed it. ---
**Author:** ![Edward\_Ramirez](https://avatars.discourse-cdn.com/v4/letter/e/2bfe46/32.png) [@Edward\_Ramirez](https://community.cartalk.com/u/Edward_Ramirez)\ **Post date:** [May 5, 2020, 2:08am UTC](https://community.cartalk.com/t/2002-chevrolet-2500-obd-reader-suggestions/163842/5 "2020-05-05T02:08:38Z")
?? it don’t make it right, people who have money to invest in a vehicle expect a fair deal. ---
**Author:** ![old\_mopar\_guy](https://avatars.discourse-cdn.com/v4/letter/o/6bbea6/32.png) [@old\_mopar\_guy](https://community.cartalk.com/u/old_mopar_guy)\ **Post date:** [May 5, 2020, 6:02pm UTC](https://community.cartalk.com/t/2002-chevrolet-2500-obd-reader-suggestions/163842/6 "2020-05-05T18:02:32Z")
Once a vehicle is that old, the mileage doesn’t really matter. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [May 5, 2020, 6:34pm UTC](https://community.cartalk.com/t/2002-chevrolet-2500-obd-reader-suggestions/163842/7 "2020-05-05T18:34:38Z")
Here’s my question - is there some ‘true’ miles number stored somewhere that might differ from what the odometer shows? I’ve never heard of that. ---
**Author:** ![keith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/keith/32/5518_2.png) [@keith](https://community.cartalk.com/u/keith)\ **Post date:** [May 5, 2020, 6:40pm UTC](https://community.cartalk.com/t/2002-chevrolet-2500-obd-reader-suggestions/163842/8 "2020-05-05T18:40:53Z")
The mileage is stored in the gauge cluster. If you swap gauge clusters, the mileage will show the doner vehicle mileage. There is a program that runs on a regular computer (windows based) that the gauge cluster can be removed from the dash and plugged into to change the mileage to the correct mileage for the current vehicle. I don’t know if there is any way to tell if it has been changed. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [May 5, 2020, 6:42pm UTC](https://community.cartalk.com/t/2002-chevrolet-2500-obd-reader-suggestions/163842/9 "2020-05-05T18:42:10Z")
Thanks, @keith - can that stored number be different than the displayed number? ---
**Author:** ![keith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/keith/32/5518_2.png) [@keith](https://community.cartalk.com/u/keith)\ **Post date:** [May 5, 2020, 6:44pm UTC](https://community.cartalk.com/t/2002-chevrolet-2500-obd-reader-suggestions/163842/10 "2020-05-05T18:44:25Z")
As far as I know, it is just an electronic register. It only stores the current value which is displayed. I don’t know if you can pull a history file and see if was changed at anytime. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [May 5, 2020, 6:50pm UTC](https://community.cartalk.com/t/2002-chevrolet-2500-obd-reader-suggestions/163842/11 "2020-05-05T18:50:04Z")
OK, so it sounds like there’s not much reason to get an OBD reader in this case, since the stored and displayed numbers will be the same.