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#1 |
GM Addicted
Join Date: Jan 2009
Location: Visalia, Ca
Posts: 2,294
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Odometer Calibration
Any of you guys know how to move the odometer numbers? I just got a new cluster and want to try and move number to actual miles since trucks been put together will all new parts. Anyone have a write up on it?
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![]() ![]() 73 GMC, 54 Caddy, 2010 Silverado, 68 C10 RIP DAd My 73 GMC Truck Build Pic 2010 Silverado 4/6 on 24s IG:MacsGarage |
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#2 |
Registered User
Join Date: May 2010
Location: laurel hill Fl
Posts: 645
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Re: Odometer Calibration
Used cars salesmen used to take a drill the the cable to rewind it. wonder if that would apply here
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1985 C10 Custom Deluxe LWB 305/700r4 [ Goldfinger ] ![]() 1999 k3500 crew cab dually 6.5tdi/4l80e |
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#3 |
Registered User
Join Date: Feb 2012
Location: Austin, Arkansas
Posts: 248
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Re: Odometer Calibration
Yes,but it takes forever! Some are tamper-proof,and trying to turn them back makes an indicator pop up.You can turn them forward,if you take the unit out of the bezel.Inside,you'll see small star wheels beside each #.Use a small screwdriver,and click each # forward,until it reaches the proper mileage. In Michigan,when the speedometer is replaced,and reset,it has to be certified,or else noted as "NOT ACTUAL MILEAGE",on the title.
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Always expect the unexpected,....but don't expect the unexpected to be the unexpected you expect ! I'm busier than a one-legged cat,in a sandbox! Veteran..and proud ! I can't fix what ain't broke....you want I should break it? |
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#4 |
Moderator
![]() Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,950
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Re: Odometer Calibration
Does the old speedometer and odometer work?
Assuming the old one works you can move the original speedometer from the old cluster to the new one. If the old one isn't working the mileage is anyone's guess. Some states have a form to fill out that states you have replaced the speedometer. The forms I have filled out state a replacement odometer MUST read ZERO. You must also re-title. The new title will say "NOT ACTUAL MILEAGE". |
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#5 |
GM Addicted
Join Date: Jan 2009
Location: Visalia, Ca
Posts: 2,294
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Re: Odometer Calibration
Not trying to make it match the old, i want it to read the actual millage i have on the new suspension, engine, and trans.
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![]() ![]() 73 GMC, 54 Caddy, 2010 Silverado, 68 C10 RIP DAd My 73 GMC Truck Build Pic 2010 Silverado 4/6 on 24s IG:MacsGarage |
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#6 |
At the body shop.
Join Date: Aug 2009
Location: Land of fruits and nuts.
Posts: 5,211
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Re: Odometer Calibration
At the Auto auctions says TMU
Or true mileage unknown. If you wreck yours i have an extra you can have Posted via Mobile Device
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" That didnt make it any newer " " Dont antique the equipment " |
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#7 |
In the Forgotten far North.
![]() Join Date: Jul 2007
Location: Anchorage, Alaska
Posts: 2,627
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Re: Odometer Calibration
See post 27 thru to the end of the following thread....
http://67-72chevytrucks.com/vboard/s...=265471&page=2
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1987 R3500 CREW CAB DUALLY (BIG RED)Acquired 06/12/2015 1990 chevy suburban V2500 5.7L My cluster Mods-Nov 2007 overhead console Stereo install Round 2 Aug 2009 Heated/turn signal mirror upgrade |
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#8 |
In the Forgotten far North.
![]() Join Date: Jul 2007
Location: Anchorage, Alaska
Posts: 2,627
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Re: Odometer Calibration
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1987 R3500 CREW CAB DUALLY (BIG RED)Acquired 06/12/2015 1990 chevy suburban V2500 5.7L My cluster Mods-Nov 2007 overhead console Stereo install Round 2 Aug 2009 Heated/turn signal mirror upgrade |
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#9 |
GM Addicted
Join Date: Jan 2009
Location: Visalia, Ca
Posts: 2,294
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Re: Odometer Calibration
BLE 'BURBAN wow you got done on your whole cluster. Im going to have to figure some things out due to the tach being from a 77 and my cluster a 79. I want to try and test the temp gauge and volt gauge before i put them in any ideas? ive put new senders on engine with currenct gauges in truck and nothing works. Also heres my idea for the brake warning light, i can move the red clear paper over to the speedometer side, since my truck is not 4wheel drive i could repin the harness to route the brake light to the 4wheel light so it operates normally. Thats the only light im worried about. Have any diagrams for the harness or how did you find everything out sorry for the long post..
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![]() ![]() 73 GMC, 54 Caddy, 2010 Silverado, 68 C10 RIP DAd My 73 GMC Truck Build Pic 2010 Silverado 4/6 on 24s IG:MacsGarage |
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#10 |
Moderator
![]() Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,950
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Re: Odometer Calibration
There's a pinout sheet in the 73-87 FAQ.
The volt gauge is easy. Just feed it 12 volts + & - and it should read 12 volts. The Temp sender is a variable resistance between the gauge and ground. 13Kohms is 20degrees (well below the bottom reading) 18Kohms is "C" 100degress and 100ohms is "H" 250degrees. 180ohms is roughly 210 degrees. Grab a $0.10 200ohm 1/4watt resistor (Red, Black, Brown) and 2 alligator clip test leads. Clip one end to the block and the other to the temp sender wire. The temp gauge should read somewhere near the middle. Replace with a 100ohm (Brown, Black, Brown) resistor and the gauge should read at or near the top. I have a Decade box but they're kinda expensive when compared with $0.20 of resistors. |
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#11 | |
In the Forgotten far North.
![]() Join Date: Jul 2007
Location: Anchorage, Alaska
Posts: 2,627
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Re: Odometer Calibration
Quote:
Although....the new VHX GAUGES from Dakota Digital are really starting to grow on me........Hmmmm
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1987 R3500 CREW CAB DUALLY (BIG RED)Acquired 06/12/2015 1990 chevy suburban V2500 5.7L My cluster Mods-Nov 2007 overhead console Stereo install Round 2 Aug 2009 Heated/turn signal mirror upgrade |
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