Question about 2005 Chevrolet Cavalier

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The speedometer locks up when it gets warm inside the vehicle

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Pretty common problem with these. Here's a guide to learn how to fix GM instrument clusters yourself, I used it to fix mine and it worked great. How to guide for Cavalier instrument cluster repair

Posted on Oct 05, 2010

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It might not have anything to do with the temp of the interior, more to do with the speedometer's insides getting warm from use. It's a common problem on the cavalier instrument clusters from 03-06, check out this page for more about how to get it fixed - cavalier speedometer repair

Posted on Sep 29, 2010

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Posted on Jan 02, 2017

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1 Answer

2002 mercury mountaineer speedometer not working. When you start it speedometer goes to 50mph regardless of what speed you traveling. Then when you turn it off it goes to 30 then slowly return to 0.


Any warning lights lit on the insturment cluster ? ABS
Vehicle Speed Signal
The vehicle speed signal is generated by the rear anti-lock brake sensor and sent to the 4-wheel anti-lock brake system (4WABS) module. The 4WABS module sends the vehicle speed signal via circuit 679 (GY/BK) to all systems which require a vehicle speed signal input.
Speedometer
The electronic speedometer receives a speed signal from the 4WABS module.

Take it to a qualified repair shop .

Jul 26, 2017 | Mercury Cars & Trucks

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My 2001 impala has problems switching through gears while driving, only when speedometer bounces. Replaced speedo sensor, but still bunces.


You replaced the wrong part ! Should have had the vehicle checked for DTC'S - diagnostic trouble codes . Replaced what speedo sensor ? No , it's not a ground wire !
Your probably have a bad wheel speed sensor ! Have it checked for DTC'S
Speedometer
The IPC displays the vehicle speed as determined by the IPC. The IPC calculates the mileage based on the class 2 vehicle speed message from the PCM. The IPC calculates vehicle speed based on the class 2 wheel speed message from the EBCM if a loss of communication or malfunction occurs with the PCM. The speedometer defaults to 0 km/h (0 mph) if the IPC detects a loss of class 2 communications with both the PCM and the EBCM.

EBCM - electronic brake control module - ABS

Jun 30, 2017 | Cars & Trucks

1 Answer

I have a 1998'Ford Explorer and half the dash lights are out and all pod a sudden my speedometer just quit. Need to know what fuses would go to these, so I can try that. Ty


Sorry but it's not a fuse problem . There is not a fuse just for the speedometer . The microprocessor inside the instrument cluster determines where the speedometer needle points , just like the fuel gauge , tachometer etc... Having the vehicle checked for DTC'S would be the proper step to take .
Vehicle Speed Signal
The vehicle speed signal is generated by the rear anti-lock brake sensor and sent to the 4-wheel anti-lock brake system (4WABS) module. The 4WABS module sends the vehicle speed signal via circuit 679 (GY/BK) to all systems which require a vehicle speed signal input.
Speedometer
The electronic speedometer receives a speed signal from the 4WABS module.

  • The Speedometer/Odometer Is Inoperative
  • Circuitry.
  • Speedometer.
  • GO to Pinpoint Test E .

No where in this factory diagnostic step does it say to check a fuse !

PINPOINT TEST E: THE SPEEDOMETER/ODOMETER IS INOPERATIVE CONDITIONS DETAILS/RESULTS/ACTIONS E1 CHECK THE VOLTAGE TO THE INSTRUMENT CLUSTER
Instrument Cluster
Measure the voltage between instrument cluster C288-7, circuit 1001 (WH/YE), and ground.
  • Is the voltage greater than 10 volts?
Yes GO to E2 .

No REPAIR circuit 1001 (WH/YE). TEST the system for normal operation.
E2 CHECK THE INSTRUMENT CLUSTER PRINTED CIRCUIT
Instrument Cluster
NOTE: Measurements must be made to the speedometer gauge pins that are inside the instrument cluster printed circuit clips.
    Measure the resistance between the speedometer pins (which can be seen in the middle of the instrument cluster printed circuit clips) and the corresponding instrument cluster terminal. Refer to the table for the pin and terminal assignments.
    Instrument Cluster Terminal Speedometer Gauge Pin C286-13 C287-1 S C287-2 G C288-7 BATT
    .

  • Are the resistances less than 1 ohm?
Yes GO to E3 .

No INSTALL a new instrument cluster printed circuit. REFER to Instrument Cluster Printed Circuit . TEST the system for normal operation.
Your best bet , take it to a qualified repair shop

Mar 30, 2017 | Cars & Trucks

1 Answer

02 Silverado 1500 speedo reads 100 mph


When does it read 100 mph ? sitting still , all the time etc.... ? The speedometer is controlled by a step motor inside the instrument cluster , step motor is controlled by a microprocessor inside instrument cluster , which get's the speed info from the PCM - engine computer over the vehicle class 2 serial data network . The VSS - vehicle speed sensor is a input to the PCM , this is what the PCM uses to calculate the vehicle speed .

Speedometer
The IPC displays the vehicle speed based on the vehicle speed signal from the PCM. The PCM converts the data from the vehicle speed sensor to a 4000 pulses/mile signal. The IPC uses the vehicle speed signal circuit 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 exists.

Having the vehicle hooked up to factory scan tool can take all the guess work out of a diagnoses like this .

Feb 09, 2017 | 2002 Chevrolet Silverado

1 Answer

Location of the speed sensors on my 1999 ford explorer


Vehicle Speed Signal
The vehicle speed signal is generated by the rear anti-lock brake sensor and sent to the 4-wheel anti-lock brake system (4WABS) module. The 4WABS module sends the vehicle speed signal via circuit 679 (GY/BK) to all systems which require a vehicle speed signal input.
Speedometer
The electronic speedometer receives a speed signal from the 4WABS module.
GEM/CTM Diagnostic Trouble Code (DTC) Index
GEM/CTM Diagnostic Trouble Code (DTC) Index DTC Description DTC Caused By Action P0500 Vehicle Speed Signal Circuit Failure GEM REFER to Section 308-07A . Take your vehicle an have it diagnosed , before you buy parts you don't need . Just a suggestion , could be a wiring problem , the speedometer gauge , computer etc...

Sep 25, 2016 | 1999 Ford Explorer

1 Answer

Does a 2007 Chevy Equinox have a vvs and if so, where do I get one and how do I change it? Speedometer isn't working.


Your vehicle has a VSS - vehicle speed sensor , which is an input to the PCM/ECM - engine computer ! If your vehicle runs good an shifts good more then likely the speedometer stepper motor inside the instrument cluster is bad . GM has had some problems with these stepper motors . You can find up dated ones on ebay an other web sites . How to repair GM Instrument Cluster Speedometer Gauge Stepper

May 18, 2016 | Cars & Trucks

1 Answer

Want to lock doors while warming car up


Could be a security feature, on the vehicle. Might have to be in gear. Some cars will not let you lock the doors if the key is in the ignition, usually newer models. If you are in the car, you may be able to lock the doors from the inside, using the switches inside the vehicle.

Feb 02, 2013 | 2003 Chevrolet Astro

1 Answer

Where is the speedo sensor on my 2010 E250 cargo van


VSS, vehicle speed sensor.

for a 2003 F Super Duty it is:

Speedometer
The instrument cluster is hardwired to the four wheel anti-lock brake system (4WABS) module. The instrument cluster micro-processor monitors the VSS data from the 4WABS module and commands the speedometer with a corresponding movement of the pointer. The vehicle speed signal is generated by the rear anti-lock brake sensor and sent to the 4WABS module. The 4WABS module sends the vehicle speed signal via circuit 679 (GY/BK) to all systems that require a vehicle speed signal input.

I don't have 2010.

Oct 26, 2010 | Ford E-250 Cars & Trucks

1 Answer

Vehicle had a rough automatic transmission shift and erratic speedometer when vehicle warmed up. I've replaced both output and input speed sensors. Now the speedometer does not work and transmission won't...


Still sounds like a bad output speed sensor - check scan the TCM for codes and see what you get. Also check the wiring at and near the output speed sensor connector.

Jul 21, 2009 | Dodge Caravan Cars & Trucks

1 Answer

Speedometer


check for a connector not fully seated.

here's info

Vehicle Speed Sensor (VSS)
On vehicles equipped with 4-wheel anti-lock brake systems (4WABS), the vehicle speed signal is generated by the rear anti-lock brake sensor and sent to the 4WABS module. The 4WABS module sends the vehicle speed signal via circuit 679 (GY/BK) to all systems that require a vehicle speed signal input. Vehicles equipped with rear anti-lock brakes (RABS) generate a vehicle speed signal from the rear axle speed sensor. The generic electronic module (GEM) receives this signal (VSS_GEM) for internal use and then distributes it to the appropriate other users (i.e., the powertrain control module [PCM], speed control module, and speedometer).
Speedometer
The electronic speedometer (17255) receives a speed signal from the 4WABS module (if equipped with 4WABS) or the generic electronic module (GEM)/central timer module (CTM) (if equipped with RABS). RABS = Rear antilock brake system

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