Question about 1986 Chevrolet Corvette

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Odometer and speedometer not working 1986 corvette

All gauges working except odometer, speedometer and of course range and instant mileage as they are based off the speedometer.

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  • coachwsw
    coachwsw Apr 05, 2013

    Had to remove gauge cluster and sent it to TABER Corvette Parts and they fixed it and returned it within 48 hours. Costly due to the shipping but all fixed. thanks to Taber for knowing what it was and fixing it. 

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michigan man
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SOURCE: My 84 Corvette Odometer does not work. Can this

i do not know but give these guys a call they sells only GM-parts its Schram auto & truck parts 1-800-292-1032 and they website is www.schramauto.com wish you the best of luck Michigan Man.

Posted on Nov 27, 2009

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pippall
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SOURCE: speedometer and odometer stoped working,at same

change the speedo sensor on the gearbox.Its posistioned at the output shaft end of gearbox

Posted on Dec 28, 2009

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Doesnanyone have a diagram showing where the wires on a speedometer connect to? I need to see if i pulled it on accident. And fuel gauge. Im learning so pictures are easier. Thx 2001 chevy tahoe


The speedometer gauge is controlled by information sent over the class 2 data bus from the PCM/ECM - engine computer . There is a VSS - vehicle speed sensor mounted on the transmission , this VSS is a input to the engine computer .
Speedometer
The IPC displays the vehicle speed based on the vehicle speed signal from the PCM. The IPC- instrument panel cluster receives the vehicle speed signal via a discreet wire. The IPC uses the vehicle speed signal circuit (4000 pulses/mile) from the PCM in order to calculate the vehicle speed. The speedometer defaults to 0 km/h (0 mph) if a malfunction in the vehicle speed signal circuit (4000 pulses/mile) exists.
Is the whole instrument cluster dead ?
Fuel Gauge
The IPC displays the fuel level as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the fuel level percent. The fuel gauge defaults to empty if:
• The PCM detects a malfunction in the fuel level sensor circuit.
• The IPC detects a loss of class 2 communications with the PCM.
When the fuel level is less than a pre-determined value, the low fuel indicator illuminates.
Reviewing the fuel system description will further explain how the system functions. Refer to:
• Fuel System Description in Engine Controls - 4.3 L
• Fuel System Description in Engine Controls - 4.8 L, 5.3 L and 6.0 L
• Fuel System Description in Engine Controls - 6.6 L
• Fuel System Description in Engine Controls - 8.1 L
Hourmeter
The IPC can display the accumulated engine run time hours using the VF display when the cluster is in the LOCK or ACC position. The IPC stores the accumulated engine run time hours in a non-volatile format. The accumulated hours will not change if the battery was disconnected or removed. When the ignition is OFF and the trip reset switch is pushed in and held for more than 4 seconds, the IPC will display the accumulated hours for 30 seconds. The hourmeter will reset to 0.0 when 10,000 hours are accumulated.
Odometer
The IPC contains a season odometer and a trip odometer. Momentarily press the trip/reset switch on the IPC in order to toggle between the season odometer and the trip odometer. Press the trip/reset switch for greater than 2 seconds, while the trip odometer is displayed, in order to reset the trip odometer. The IPC displays the vehicle mileage and trip mileage as determined by the IPC. The IPC calculates the mileage based on the vehicle speed signal circuit from the PCM. The odometer will display 'error' if an internal IPC memory failure is detected. The odometer can be configured to display either miles or kilometers.
PRNDL Display
The IPC displays the selected gear position as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the gear position. The PRNDL display blanks if:
• The PCM detects a malfunction in the transmission range switch circuit.
• The IPC receives a class 2 message indicating the park position and the column park switch indicates a position other than park (open input).
• The IPC detects a loss of class 2 communications with the PCM.
GM had problems with stepper motors that control the needle position .
Your best bet buy a used instrument cluster from the auto slavage yard .

Apr 30, 2017 | Cars & Trucks

3 Answers

My speedometer works but my digital odometer does not work on my 2003 old alero


This is one guy's advice: Replace the speedo head, that should take care of the problem."

This site is also interesting because the guy said
General Motors cars had instrument cluster problems from 2003 through 2006. When I researched instrument cluster problems on the Internet what I found raised concerns in me. Many of those vehicles had problems that began with the instrument cluster, but eventually led to the engine refusing to start.
(an electronic instrument cluster, digital instrument panel or digital dash for short, is a set of instrumentation, including the speedometer, that is displayed with a digital readout rather than with the traditional analog gauges. Many refer to it simply as a digital speedometer.)

http://www.instructables.com/id/Erratic-Instrument-Panel-on-GM-Cars/

Feb 12, 2017 | 2003 Oldsmobile Alero

2 Answers

What causes my speedometer & odometer not to work?


possible sender unit on the gear box has oil in it or wiring is broken or fallen off

Jun 06, 2016 | 1999 Acura Integra

1 Answer

My 2003 ford focus speedometer stops working sometimes as does the elecyric odometer- sometimes both at same time. Other gauges work fine. The odometer goes to just dashes in place of the actual mileage...


Usually if both the odometer and speedometer stop working, the problem is the speed sensor on the transmission. You should also have a trouble code in the engine computer.
If one component works but the other does not, the problem is usually the speedometer head in the dash.

Sep 23, 2013 | Cars & Trucks

2 Answers

D4 light started blinking, speedometer stopped working and mileage gauge


Vehicle speed sensor. Top of the tranny is a connection. From this, a cable runs to the back of the odometer. Probably need to replace it

Feb 16, 2013 | 1995 Honda Accord

2 Answers

Everthing on my dash (speedometer,odometer,fuel


Blown Fuse or fried Circuit board. Take to a local AutoZone, Advance, Murray's, O'reillys or a similar part house for them to check the wiring. I'm assuming the van does not use a mechanical Speedometer or Fuel Gauge.

On the plus side, with no speedometer, your indicated odometer mileage does not increase. Just keep your speed down and your tank full. Kidding, just kidding.

Jan 05, 2010 | 1992 Dodge Caravan

3 Answers

Speedometer, gas gauge, odometer, rpm gauge not working


My gas guage, speed odometer and tempiture does not work
The speed odometre is reading 9999999 what should i do

Jul 29, 2009 | 1998 Nissan Frontier

2 Answers

1996 ford ranger odometer / trip stopped working


Since your speedometers work, the problem is in the gearing to the trip and mileage odometers. Simple problem, major pain to fix but, remove instrument cluster - you'll have to remove speedo cable to get it out. Use the old Mark I eyeball to check for broken parts. Might even have to drop steering column - disconnect air bag first!

Jan 30, 2009 | 1996 Ford Ranger SuperCab

1 Answer

81 corvette speedometer and odometer quit working


unhook speedometer cable from transmission and spin cable by hand it should turn smoothly if it des hook end to a low sped drill and see if it holds at a steady speed if it does the the problem is in the plastic speedo gear in the trans if it dos not remove the dash and inspect the connection on the speedo head

Oct 17, 2008 | 1981 Chevrolet Corvette

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