Question about 2008 Chevrolet Uplander

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Check engine light comes on after refueling the vhicle. gauge doesn't read full, then it will. light goes out after a day or two.

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Also, be sure to not over-fill the gas tank. When filling the tank, when it sounds full (you can hear gas gush up the filler neck) and when the filler clicks off the first time...don't be tempted to keep clicking more gas into the tank because over-filling can cause a variety of problems (including setting the light) and can eventually saturate/ruin the fuel vapor canisters.

Posted on Feb 20, 2010

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Check the fuse in the main block its blown or or disconnected fuel gauge

Posted on Jul 28, 2009

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Posted on Jan 02, 2017

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79 c10 - guages all read low except gas guage which reasd high. Truck runs fine. Lights work, even the dash lights work good.


It sounds like you might have a poor ground connection somewhere. You can test each individual gauge for full travel by grounding the wire the goes the each gauges individual sender. In other words to check the temp gauge, ground the wire that goes to the temp sender. The temp sender is in the left cylinder head between the #1 and #2 spark plug ( looks like a brass pipe plug with a single wire coming from it) if you ground the wire with the key on (engine off) the gauge should go to the end of the scale (hot) with the wire off it should go to full cold. You can do this with the gas gauge too but not the amp gauge or volt meter. If the volt gauge is reading low (if it has one) and you know that battery voltage is good (don't guess, measure with a multi-meter) there has to be a poor connection somewhere.

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2005 chevy colorade check engine light comes on in warm weather and goes off in cool or cold weather.this has happen several times


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Gas gauge goes to empty and then full after fillup


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May 27, 2010 | 2007 Nissan Pathfinder Off Road

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Fuel gauge not working all the time.


This is a normal concern.
The instrument cluster uses 4 different operating modes to calculate the fuel level:
Anti-slosh (default mode)
Key OFF fueling
Key ON fueling
Recovery
After a fuel fill up, the time for the fuel gauge to move from empty (E) to full (F) ranges from 2 seconds to 55 minutes depending on which operating mode the fuel gauge is in.
The default fuel gauge mode is called the anti-slosh mode. To prevent fuel gauge changes from fuel slosh (gauge instability due to changes in fuel sender readings caused by fuel moving around in the tank), the fuel gauge takes approximately 55 minutes to go from empty (E) to full (F).
The key OFF fueling mode (2 seconds to read empty [E] to full [F]) requires 3 conditions be met:
The key must be in the OFF position throughout the entire refueling of the vehicle.
At least 15% of the vehicle's fuel capacity must be added to the fuel tank.
The instrument cluster must receive a valid key ON fuel sender reading within 1 second of the key being put into the RUN position. The key ON sample readings are considered valid if the fuel sender reading is between 15 ohms ± 2 ohms and 160 ohms ± 4 ohms.
If these conditions are not met, the fuel gauge stays in the anti-slosh mode, which results in a slow to read full (F) event.
The key ON fueling mode (approximately 90 seconds to read empty [E] to full [F]) requires 3 conditions be met:
The transmission is in PARK (P).
The key is in the RUN position.
At least 15% of the vehicle's fuel capacity must be added to the fuel tank.
In key ON fueling mode, a 30-second timer activates after the transmission is put into the PARK (P) position (automatic transmissions). When the 30-second time has elapsed and at least 15% of the vehicle's fuel capacity has been added, the fuel gauge response time is 90 seconds to read from empty (E) to full (F). When the transmission is shifted out of PARK (P), the fuel gauge strategy reverts to the anti-slosh mode. The key on refueling mode prevents slow to read full events from happening if the customer refuels the vehicle with the key in the RUN position.
Recovery mode is incorporated into the instrument cluster strategy to recover from a missing fuel level input during a refueling event. Missing fuel level inputs result from intermittent opens in the fuel sender or its circuits. Recovery mode (empty [E] to full [F] approximately 20 minutes) is initiated when the following 2 conditions are met:
The instrument cluster is in the anti-slosh (default) mode.
The actual fuel level in the tank is greater than what is being displayed by the fuel gauge

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2 Answers

Fuel Gauge reads empty, but tank IS full


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2003 Ranger Edge Fuel gauge


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Fuel gauge problem


The nature of the gauge is that it should behave with a linear taper between full and empty. If it works when full but then malfunctions as the level drops, the variable resistor in the sending unit which is housed along with the fuel pump in the gas tank is almost certainly at fault. The sending unit will have to be replaced to fix the problem. Expect this to be an expensive endeavor.

Jun 21, 2008 | 2007 Kia Sorento 4x4

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