a little help with my fuel gauge issue please..

[mc98yukon]

Not to sure what the problem is.. but I never know how much gas is in my Yukon. The gas guage is spontaneous. When I put about five or more dollars in it, it will register full and the next day it will be on E.. I get no accurate readings whatsoever.. I am always. Guessing and have even ran out of gas a few times especially if parked the wrong way on a hill. If you have any ideas it would be much appreciated... thanks

 

[SunlitComet]

if you see your gauge moving wildly but smoothly with out looking like it is sticking then likely the sender on the pump in the tank is finally wearing out. maybe wire connector issues. if you have to replace it. the pump assy has to come (if 4dr suv)out and right now you can get the sender separately of course but for $150 you can get the whole pump/sender assy. redesigned and improved. it is the oem delphi unit and is that cheap at amazon maybe rock auto too. locally it will cost you $200+++.

can i assume you are 4dr. the info above relates to that.

also read below.


Fuel Gauge Inaccurate

1. Ensure terminals are clean and terminal connections are tight.
2. Disconnect fuel tank sender connector, then connect tester J 33431-B, or equivalent, as follows:

• • Connect tester red lead to purple wire of the connector, then connect the other lead of the tester to a suitable ground.

1. Set resistance dials of tester to 0 ohms and then to 90 ohms.
2. Gauge should read low when resistance is set to 0 ohms and read full when resistance is set to 90 ohms. Allow some time for gauge to read full due to the anti-slosh device .
3. If gauge responds accurately, check for clean mounting surface on sending unit to ensure a good ground. If ground is good, replace sending unit.
4. If gauge does not respond accurately, check circuit between gauge and sending unit for an open or short to ground. If circuit is satisfactory, replace gauge.

 

[Yukon&Tahoe]

Or.... it may be the stepper motors on your guage cluster?

 

[Asfalto]

1998 tahoe LT 4dr
Hi! My gauge is vibrating and reads 1/4 when full and after 100 miles reads E.
No problem for the vibration but the inaccurate reading is very annoying!
Are the 2 issue related or 2 different problems? In the tank or in the cluster?

Questions:
do the "check gauge" light come on when the fuel is low?
if yes, is it correct (tank really empty) or is it gauge reading related?

Thanks

 

[SunlitComet]

the vibration is a gauge issue tho the inaccuracy could be at the same time a wiring sender issue.

 

[Asfalto]

I'll dig for the inaccuracy issue first!
Do somebody know if the "check gauge" light comes on when the fuel is low?
if yes, is it correct (tank really empty) or is it gauge reading related?
It could be a little help: i'm always stressed by running out of gas..

ps: Sunlit you are the MASTER!! Thank you