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Gas Gauge jumps up and down throughout the duration of the drive especially if I'm on a hill the chime goes off or it will indicate I have a full tank which is not accurate.

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The problem is caused by a defective fuel level sending unit. To access the sending unit for replacement in any Buick model the gas tank must be renoved from the car.

Posted on May 19, 2011

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Posted on Jan 02, 2017

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2 Answers

How to replace the thermostat on the 2004 ford freestar


Don't forget to check the cabling to the dashboard , if the dial is rapidly moving up and down I would suggest , bad signal/sensor , poor grounding , your gauge I'm assuming jumps from C to mid way and back while driving , if it's jumping to H , stop driving as this would not be, no pun intended , cool!!

Apr 17, 2015 | 2004 Ford Freestar

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I have a 1998 Chevy Blazer. My gas gauge does not work properly. The gas gauge stay's on FULL at all times no matter how much gas is in it. When it get's low on fuel the gas gauge start's to jump back and...


It has 2 possible solutions 1) fuel sending unit is going bad which the tank has to be dropped to change, 2) you have a bad cluster panel. Hope this helps

Dec 18, 2013 | 1998 Chevrolet Blazer

1 Answer

I have a 2005 Chrysler PT Cruiser at just over 80,000 miles. At random intervals, the warning chime will sound off for no apparent reason. There are no warning lights on the dashboard. There are no error...


Check to see if you have a water level indicator in the top of the radiator . A small plastic fitting with 1 wire from it. IF so it works when there is no water around it and will activate an alarm to warn you of lost water in the cooling system. The problem here is that the radiator cap will allow heated water out to the reservoir but on cooling down insufficient water is drawn back in to keep the top tank completely full. So there is a space that will allow water to miss the unit (cornering-stopping-hills up or down) momenterially and hence the unit chimes intermittently. Check if the top tank is completely full when cool.

Sep 06, 2013 | 2005 Chrysler PT Cruiser

1 Answer

Gas gauge bounces from empty to full


the float that is the sender unit in the tank is stuck this is why the gage jumps to full

Aug 08, 2012 | 1999 Chevrolet S-10 Pickup

1 Answer

2008 sonata fuel gauge jumps up and down


The fuel pump ran dry without gas and now it has a fault. Unplug the battery after you fill it all the way up, then reconnect it. This should cause it to reset and work properly.

Apr 09, 2012 | Hyundai Sonata Cars & Trucks

1 Answer

'02 Rendevous beeping randomly, no lights or trouble indicatiors on. Beeps when parked, beeps while driving, no rhyme or reason apparant. sometimes goes 10 or 15 minutes without beeping, other times beeps...


The audible warnings alert the driver of a system concern or a critical vehicle condition. The radio generates the audible warnings through the left front speaker. The radio receives audible warning requests via the class 2 serial data line from the IPC or body control module (BCM). If the radio receives multiple audible warning requests, the warning with the highest priority sounds first. The following lists the audible warning priority and the pulse rate:
Fast rate chime--200 pulses per minute
Medium rate chime--150 pulses per minute
Slow rate chime--50 pulses per minute
Single chime

Is the sound heard different from typical Audible Warnings ?

Fasten Safety Belt Warning
The radio activates the fasten safety belt audible warning as requested by the IPC. The IPC sends a class 2 message to the radio indicating the chime frequency, slow rate and duration (5 pulses). The fasten safety belt warning sounds and the fasten safety belt indicator illuminates when the following occurs:
• The ignition switch transitions to ON.
• The inflatable restraint sensing and diagnostic module (SDM) detects that the driver's seat belt is not buckled, signal is low. The IPC receives a class 2 message from the SDM indicating the driver's seat belt status.
If the seat belt is buckled when the ignition is turned on, the chime does not sound. If the seat belt is buckled while the chime is sounding, the chime stops. If the seat belt is unbuckled after the initial transition to ON, the chime does not sound.
Headlamps On Warning
The radio activates the headlamps on warning as requested by the body control module (BCM). The BCM sends a class 2 message to the radio indicating the chime frequency, fast rate and duration, continuous. The headlamps on warning sounds when the following occurs:
• The ignition is OFF.
• The BCM determines that the driver's door is open, signal is low.
• The BCM determines that the headlamp switch is in the park or head position.
Key-In-Ignition Warning
The radio activates the key-in-ignition audible warning as requested by the BCM. The BCM sends a class 2 message to the radio indicating the chime frequency, medium rate and duration, continuous. The key-in-ignition warning sounds when the following occurs:
• The ignition switch is OFF.
• The body control module (BCM) determines that the driver's door is open, signal is low.
• The BCM determines that the key-in-ignition switch is closed, signal is low.
Turn Signal Reminder
The radio activates the turn signal warning as requested by the IPC. The IPC sends a class 2 message to the radio indicating the chime frequency, medium rate and duration, continuous. The turn signal warning sounds when the following occurs:
• The ignition switch is in the RUN position.
• The turn signal switch is in either turn position, sensing, within 1 second, an open to B+ transition in the turn signal control circuit, left or right turn.
• The vehicle has traveled a distance of 1.2 km (¾ mi) by counting pulses on the vehicle speed input circuit.
The IPC turns OFF the turn signal reminder when either the ignition switch is turned to the OFF position, or the turn signal switch returns to the OFF position, sensing, within 1 second, no transitions from open to B+ in either of the turn signal control circuits, left turn or right turn.
Additional Chimes
The following chimes will turn ON when an associated indicator/message turns ON in the IPC/DIC:
• ABS indicator
• AWD Disable indicator
• Battery/Charge indicator
• Brake indicator
• Change Engine Oil indicator
• Door Ajar indicator
• Hot Coolant Temp indicator
• Low Brake Fluid indicator
• Low Fuel indicator
• Low Oil Level indicator
• Low Oil Pressure indicator
• Low Tire Pressure indicator/reset
• Low Washer Fluid indicator
• MIL (Service Engine Soon) indicator
• Oil Life Reset
• Park Lamp Out indicator
• Rear Hatch Ajar indicator
• Service Traction System indicator
• Service Vehicle Soon indicator
• TRAC OFF indicator
For a description of an indicator refer to Indicator/Warning Message Description and Operation .
For diagnosis of an indicator refer to Symptoms - Instrument Panel, Gages and Console .

Did the Mechanic check for DTC'S - diagnostic trouble codes in the BCM or insturment cluster ? Did you try a Buick dealer ?

Jul 09, 2017 | 2002 Buick Rendezvous

1 Answer

What's the easiest way to change the spark plugs and my gas gauge bounces around alot it goes from full to empty. my 4wheel drive wont engage either


jack it up, use jack stands. take off the front wheels, and go in through the wheel well to get to the spark plugs. Gas gauges on every blazer is freaking crazy. mine acts up when it`s at a 1/4 tank. Park up hill it shows more, park down hill, it shows empty.

To much trouble to replace, unless you have the time and money to replce the sending unit.

Feb 16, 2011 | 2002 Chevrolet Blazer

5 Answers

The fuel guage on my 2004 Chrysler Pacifica jumps around


This is a simple service fix. It's a glitch in the computer system. Take it to the dealer and there is some sort of code they can enter to "update" the car's computer.
Mine does it occasionaly, it annoying, but not harmful.
I've heard of some that will act up for a while, then stop, while others, have acted up and them the fuel gauge stays on empty.
Talk to the dealer.

May 05, 2010 | 2004 Chrysler Pacifica

1 Answer

Gas Gauge Occasionally Falls then Returns to Normal


The sending unit in your tank is going bad replace it.

Jan 08, 2009 | 1998 Pontiac Grand Am

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