Question about 1991 GMC Safari

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The air conditione speedo and cruise control all stopped working at same time. i've been told there is a sensor that controls speedo on top of tranny speedo is not digital

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1992 Subaru legacy wagon will not shift up from first gear. it is an AT.


run the fault but all you describe is operated from the VSS sensor ( vehicle speed sensor)
it tells the cruise control the vehicle speed , tells the TCM the vehicle speed so that ratios can be changed, activates the speedo,and will report with a check engine light to report a transmission problem
run the fault codes first

Mar 05, 2017 | Subaru Cars & Trucks

1 Answer

Why doesn't the cruise control work?


run the fault codes
cruise control needs the following to work together as one or more will stop it from working.
VSS sensor, (road speed /speedo)
engine rpms/tacho
brake switch sensor/
clutch switch sensor
cruise control switch

Jun 06, 2015 | 2005 SsangYong Rexton RX

3 Answers

Crusie control does not work on 2011 gmc sierra 1500 and I've already replaced the switch?


If the switch is replaced,then it can be wiring issue or faulty cruise control board.But as the switch is replaced,get the voltage at the switch tested to confirm the switch is actually receiving voltage.If no voltage received at switch power supply wire then ,apply external 12 volt power to the cruise control switch wire and then see if cruise control comes ON.If yes,then you know wiring is issue.
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On this case, to troubleshoot this problem, there are solved help links. Click the link directly and refer the details to solve this problem yourself, with help of diagrams: ------

Ford ranger cruise control not working? http://technoanswers.blogspot.in/2012/02/ford-ranger-cruise-control-not-working.html

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Horn and Cruise control quit working?

http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-quit-working.html

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Horn and cruise control not working on Plymouth Grand Voyager?

http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-not-working-on.html

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Horn and Cruise control quit working on 2003 Jaguar S-Type?

http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-quit-working-on.html

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Cruise Control stops working, Excessive cranks to start the engine and RPM goes max 2500

http://whoisbyme.blogspot.in/2012/07/cruise-control-stops-workingexcessive.html

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Cruise control stop working on 1994 Ford ranger?

http://technoanswers.blogspot.in/2012/02/cruise-control-stop-working-on-1994.html

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Cruise control not working?

http://schematicsdiagram.blogspot.com/2011/12/cruise-control-not-working.html

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1996 Ford Explorer: Cruise Control Wiring Diagram?

http://schematicsdiagram.blogspot.in/2012/06/1996-ford-explorer-cruise-control.html

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These will help.

Thanks.

Nov 28, 2012 | GMC Cars & Trucks

1 Answer

I have a 1996 Ford Explorer XLT 4.0L 4x4. My speedometer and odometer stopped working. Every other gauge on the cluster seem to be working fine. My cruise control also works as it should. I've been...


If the speed sensor was defective the transmission would not shift right and you would have no C. control, also the check engine light would be on. I think what you have is just a defective speedometer head, it is electronic and I have replaced dozens of them for this problem at my dealer.

Jun 29, 2012 | Cars & Trucks

1 Answer

Got a 1993 4.0 xj40 sovereign (xj6) with an intermittent Cruise control. Works perfectly till engine temp reaches normal then ceases to operate. Have replaced Speed control module and vacuum pump unit...


check if your car has a speed sensor located in the diff rear cover if so from memory early face lift xj40 models used that sensor for the cruise only signal . the speedo signal came from the abs circuit. does the speedo fail at the same time? the sensor in the diff used to change spec when the oil increased in temp whatever sounds like the speed signal is at fault, blue wire i think at the seed control module good luck

Jul 23, 2017 | 1990 Jaguar XJ6

1 Answer

Cruise control don't work on 1994 Ford F350 (non a powerstroke)


Have you checked the recalls for that truck? My 1995 f-150 Had a recall on the cruise control. Also check the brake pressure switch, try replacing the sensor on the top of you differential (also controls your speedo)

Jun 17, 2009 | 1993 Ford F350

1 Answer

Knob on air conditioner not working right and cruise control stopped working at same time


It is a vacuum leak under the hood. If it is a six cylinder, look on the driver side of the intake manifold for a L shaped fitting that usually pops off. If it is a V8 the leak may be near the battery.

May 26, 2009 | 1999 Jeep Grand Cherokee

1 Answer

1997 GMC Jimmy braking problem


the abs control unit controls the speedo (tach) also tells the cruise signal. abs should be fixed or replaced for any of these to work properly with the abs system not working you have no signal to the ecu to say what fuel air mix is for the speed you are doing and will think you are idling.

Jun 07, 2017 | 1997 GMC Jimmy

1 Answer

I washed the engine, then cruise control stopped functioning, before that rpm needle went mad and fluctuated from 0 to max on and off. I think there is a short circuit , but don't know where to find or...


If you have an after-market cruise control system, you'll need the specs from the company that manufactured it. Otherwise, it's guess work. Does the Check Engine light come ON when this happens? Whenever the "Check Engine" light comes on, there is always a DTC (Diagnostic Trouble Code) stored in the ECM (Engine Control Module). You'll need an OBDII (On-Board-Diagnostics) scanner to retrieve any codes recorded/set in ECM. See if there's a P0500 DTC. I imagine the cruise control system uses this signal as well as the Speedo.
P0500 Vehicle Speed Sensor Malfunction
The vehicile's speed sensor is on the transmission almost directly below the throttle body
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It is a three pin connector (pin 1=power-12VDC, pin2=ground, & pin3=signal).

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Apr 05, 2009 | 2001 Hyundai XG300

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