Question about 1999 Chevrolet Silverado 1500

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MPH gauge My mileage gauge doesn't show and when it does, it has the trip mileage instead. what is the problem for this?

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  • jmf96763 Mar 12, 2009

    Thank you, I will try that.

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Short on the circuitry bord. best bet go to the junk yard and try and ask them for one with the closest mileage cause the instrument cluster retains the mileage and not the computer

Posted on Mar 09, 2009

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Posted on Jan 02, 2017

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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

1 Answer

My mph, gas, and temp gauges are not working


That's why you don't let you husband work on your car ! Unless he does it for a living .. For MPH there is a VSS - vehicle speed sensor , for the gas there is a sending unit in the fuel tank, for the temp. gauge there is a temp. sensor located in coolant stream on the engine .You more then likely need to have you instrument cluster repaired . GM had a problem with step motors inside the instrument cluster . A step motor is what controls the individual gauge. The sensors are all inputs to the PCM - powertrain control module (engine computer ) .
Engine Coolant Temperature Gage
The IPC displays the engine coolant temperature as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the engine coolant temperature. The engine coolant temperature gage defaults to C or below if:
?€¢
The PCM detects a malfunction in the engine coolant temperature sensor circuit.


?€¢
The IPC detects a loss of class 2 communications with the PCM.

Fuel Gage
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 gage 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 14% (84ohms), the low fuel indicator illuminates.
Odometer
The IPC contains a season odometer and a trip odometer. Momentarily press the trip select/reset switch in order to toggle between the season odometer and the trip odometer. Press the trip select/reset switch for greater than 1.5 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 information from the PCM. The odometer will display 'error' if an internal IPC memory failure is detected.
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 shall flash all gear positions if:
?€¢
The PCM detects a malfunction in the transmission range switch circuit.


?€¢
The IPC detects a loss of class 2 communications with the PCM.

Speedometer
The IPC displays the vehicle speed based on the information from the PCM. The PCM converts the data from the vehicle speed sensor to a 4000 pulses per 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 mph (0 kph) if a malfunction in the vehicle speed sensor circuit exists.
Tachometer
The IPC displays the engine speed as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the engine speed. The tachometer will default to 0 rpm if:
?€¢
The PCM detects a malfunction in the engine speed sensor circuit.


?€¢
The IPC detects a loss of class 2 communications with the PCM.

May 22, 2016 | 2002 Buick Century

1 Answer

I have a toyota corrolla 2004 an is showing trip A on the dashboard. Does that mean is time for a timebelt?


Trip A is the mileage you have driven since the Trip A was last reset. Trip B is the mileage you have driven since the Trip B was last reset. To reset the Trip A or Trip B mileage select either the trip a or trip b mileage, hold down the select/reset button until the mileage turns to 0.

There will be more info on this in your owners manual. If you do not have one you can take a couple of minutes to register an account on the Toyota.com website, enter your vehicle info, and you will be able to view online PDF versions of your owners manual.

Aug 31, 2011 | Toyota Corolla Cars & Trucks

1 Answer

My toyota corolla 2006 model has the maint. required lights on. what does that mean?


It means your car needs an oil change, based on mileage. If you take your car to get the oil changed, they can reset the light for you. If you want the light off now, try holding in the odometer reset button, with the key on but engine off, until little dashes appear then one by one dissapear. This procedure may need to be done either on the odometer total mileage or trip A mileage or trip B mileage.

Step 1: Have car off.

Step 2: Push and hold in trip reset button.

Step 3: While still holding button in, turn key to ON, but engine off. Wait for the little dashes to appear and disapear. If it doesn't work on the odometer setting. before turning key off, switch to Trip A setting. If the procedure doesn't work on the odometer setting or Trip A, try Trip B setting.

Step 4: Turn key off. Then start car. Maint. required light should be off.

Jul 15, 2011 | 2006 Toyota Corolla

1 Answer

I was pushing the buttons looking at how much time till oil change and noticed my speedometer was now showing KM instead of mph? it is in metric or something? can not get it back to MPH and did not get a...


If I'm not mistaking on that model if you hold the trip/reset button while the odometer is on the miles ( not trip a or b) for a few seconds it should go back to mph. Let me know if this helps. Chevy's can be done a couple ways. But I think for yours this is it.

Feb 17, 2011 | 2006 Chevrolet Malibu

1 Answer

I have a '99 GMC Sierra and for the past few months the gauges won't work or go off and on. The gauges I am talking about are the mileage and trip gauge, and some of the dash gauges that would show check...


Here in Ohio (with all the salt) we always check for bad grounds first. Run a fairly thick insulated wire from your batteries ground post, through the firewall and screw it down tight to a lower place on the dash.If this doesn't immediately help then your problem is on the plus 12volt side of the guages, not ground side.

Mar 15, 2010 | 1999 GMC Sierra

1 Answer

Unknown word 'TRIP A' on the mileage metter


push the little button next to or below the mileage read out

Jan 05, 2010 | 2001 Toyota Sequoia

1 Answer

Got a fuel computer data error problem.


My linclnls 2001 v8 is indicating me fuel computer data error and the speedometer stays at 0 mph and the trip stay indicater stay blank.any suggestions on what to do??

Apr 09, 2009 | 2003 Lincoln LS

1 Answer

Odometer setting


Push the little rod that sticks out

Mar 27, 2009 | 2006 Lexus Is 250

6 Answers

MAINT REQD light won't reset


I am a Scion Service Manager. Really.
Here is how you do it:

Turn the key to the ON position (do not start it)

Observe the odometer display (it MUST be set to "ODO"),
and observe the mileage...
(Note that some Toyota & Scion cars utilize the "Trip A" setting)

Press in and HOLD the trip reset stick; do not release it.

Turn the key on.

Observe the odometer display. You will see 5 dashes, then 4, 3, 2, and then 1, followed by 5 zeros, and then, whatever mileage you observed when you started will return.

Release the button. The indicator is norw reset.

What this does: It adds 5K miles to the odometer counter.

Sep 05, 2008 | 2008 Scion Xd

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