Question about 1997 GMC Sierra

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1998 GMC 1/2 ton truck vibrating fuel gauge

Vibrating fuel gauge but reads fuel amount correctly

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This Very well could be the Sending unit inside the Fuel Tank. I would check the Guage before I dropped the Tank to Check that though.

Posted on Jan 11, 2009

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6ya6ya
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Posted on Jan 02, 2017

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Low fuel light comes on after i fill gas tank on 2001 gmc sonoma


Check to see if the panel fuel gauge is showing the correct amount of fuel. If that's ok then the fuel tank float may be bad.

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1998 gmc c7500 topkick, replaced fuel pump but it's still not cranking and when it does, won't stay cranked. Like it's not getting fuel, any suggestions?


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1998 GMC Sonoma. The fuel gauge is stuck on a bit over 1/2 tank, but it drops down to empty when I shut the engine off. Is it the sendin unit, or could it be something else? Thanks in advance.


If you don' having any wiring issues I would think you should look into the gauge.
The gauge has a memory. It is supposed to stay in its last position when the key is turned off. There would be no more power going to the gauge once they key is turned off so it can no longer read resistance to ground from the sender.

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The gas gauge needle on my 1998 G.M.C. Jimmy is jumping around and not reading properly.


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What is the fuel pressure for a 1998 GMC Jimmy


Hi!!

The fuel system pressure for your Jimmy is 55-61 PSI (Pounds per Square Inch)

Vent the fuel tank vapors by loosening the fuel cap. Position the ignition switch and the A/C system in theoff position. Install a fuel pressure gauge to the vehicles fuel pressure valve. Confirm that no leaks are present, and with the key ON, engine OFF verify the PSI reading on the gauge.

Don't forget to rate this post!!

Sep 03, 2010 | 1998 GMC Jimmy

1 Answer

Have a 2001 gmc jimmy...drove home gas gauge read 1/4 tank..next day cranked over but wont start..gas gauge reads empty...put $10.00 from spare gas can..cranked over but no start ..gas gauge still reads...


chevy and gmc trucks have an on going problem with this,turn the key on,and get a rubber mallot or a hammer and hit the bottom of the fuel tank a couple of times,this will unstick something in the fuel pump/sending unit.

Jan 05, 2010 | 2001 GMC Jimmy

1 Answer

Fuel gauge erratic


you will need to have the cluster (guages) repaired or replaced. (for the vibration). You will need to do this first.

They also have problems with the fuel level sensor in the tank, the contacts corrode and will give false readings. BUT this will not cause the guage to vibrate as you have described.

Aug 04, 2009 | 2000 GMC Denali

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1998 gmc 4.3 starts up but loses power 3-5 mins later,will restart and run again for another short time,fuel filter has just been replaced.


Install a pressure gauge, start and run 3-5 minutes and watch the pressure. You should see the pressure maintain as it did when first started. If it begins to drop, the fuel pump has gotten weak and is starting to fail.
Let me know what you find.
Regards.

Mar 05, 2009 | 1998 GMC Sierra

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