Question about 1999 Pontiac Grand Prix

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Fuelgage stops working after 5 mins.

Fuel gage works for about 5 minutes then it slowly falls to empty and low fuel lite comes on

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Fuel sending unit in gas tank going bad.

Posted on Mar 17, 2009

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Posted on Jan 02, 2017

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2005 GMC SIERRA 5.3l 1500 CODES P0449/P0463 FUEL GAGE NOT WORKING AND LIGHT STAYS ON CAN IT BE THE CLUSTER OR FUELGAGE CAUSE LIGHT STAYS ON


What light stay's on ? GM had stepper motor problems 2003 to 2006 . stepper motor in side instrument cluster is what controls the gauge needle . Video's on youtube GM stepper motor problems . Do you know what evaporative emissions systems are ?
DTC P0449 Evaporative Emission (EVAP) vent Solenoid Control Circuit
A battery positive voltage is supplied to the evaporative emission (EVAP) canister vent solenoid valve. The control module grounds the EVAP canister vent solenoid valve control circuit to close the valve by means of an internal switch called a driver. The scan tool displays the commanded state of the EVAP canister vent solenoid valve as ON or OFF. The control module monitors the status of the driver. If the control module detects an incorrect voltage for the commanded state of the driver, this DTC sets.

DTC P0463 Fuel Level Sensor 1 Circuit High Voltage
The fuel level sensor changes resistance in response to fuel level. The powertrain control module (PCM) monitors the signal circuit of the fuel level sensor in order to determine the fuel level. When the fuel tank is full, the sensor resistance is low and the PCM senses a low signal voltage. When the fuel tank is empty, the sensor resistance is high and the PCM senses a high signal voltage. The PCM uses the signal circuit of the fuel level sensor in order to calculate the percentage of remaining fuel in the tank. The PCM sends the fuel level percentage via the class 2 serial data circuit to the instrument cluster in order to control the fuel gage. The fuel level information is also used for misfire and evaporative emission (EVAP) diagnostics.
With this code stored would suspect sending unit in the fuel tank or a wiring problem . Your best bet mite be to have a qualified repair shop check it out .

Oct 30, 2017 | GMC Cars & Trucks

1 Answer

Check gage light comes on, then steering locks, then dies...any ideas? I then let it sit for a few min and restart it...then it runs. Just started today, happened twice...


When the CHECK GAGE turn on illuminates when the engine coolant temperature is high, the engine oilpressure is low or the fuel gauge is at or near empty.

Check your Service Manual for this and other details.

Hope help with this (remember rated this help).

Feb 19, 2010 | 2001 Jeep Grand Cherokee

2 Answers

Falls on Its face 3-5 min of driving


check the vacuum lines on the engine.sometimes these will crack or develop a small hole or break and it will **** too much air in the engine causing it to act that way.

Jan 15, 2010 | 1995 Chevrolet Blazer

2 Answers

2003 Dodge Ram 1500 Fuel Gauge drops to empty while driving.


I have the same problem on my 2003 Dodge Ram 2500 5.7 Hemi. Also the gauge is sometimesslow to register after filling. Maybe 5 minutes.My neighbor has the same poblem with his 1999 Durango? I think this is a job for a recall.

Mar 23, 2009 | 1998 Dodge Ram 2500 2WD

1 Answer

2002 Liberty Fuel Gauge Not Working


It may be possible to get instrument cluster to do a self-test? If you want to try this to rule out instrument cluster.
Press and hold odometer reset button, turn key from off to run, run is where the dash lites come on. Any stored 3-digit codes will be displayed in the odometer vf display. The vf display will perform a sequential segment test. All indicators, data controlled, will illuminate. All gauges will cycle in 12.5% or 15% increments. The cluster will automatically exit self-test. The self test does not verify serial data stream. The cluster internally commands all non-hardwired gauges and indicators to operate. The fuel level sending unit sends info to pcm then pcm sends data to instrument cluster.
I don't know if that self-test will work on your vehicle? It won't hurt to try. If all the gages cycle except fuel gage, then I suspect the instrument cluster. You can call around different shops, get an estimate for the repair.

Jun 11, 2017 | 2002 Jeep Liberty

1 Answer

Fuel gage


They get gumed up(more so if they have sat for awhile) other than pulling them out of the tank. the easyest thing to do is add some antiguming fuel additive to your gas. it takes some time. It will losen them up.

Dec 17, 2008 | 2000 GMC Sierra

1 Answer

Fuel level sensor in tank bad????


Yes it is all one unit, and yes that is what the problem is. don't use aftermarket parts, use OEM, (Delco Remy) they are much better quality.

Sep 08, 2008 | 2000 Chevrolet Blazer

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