gas gauge/fuel pump not working correctly?

[drowndindreams]

The fuel gauge up front hasn't been reading correctly. My father states that it's the fuel pump, which is about a $900 fix.

Any suggestions? Or ideas?

 

[AtomicHoe094]

900 bucks is a little steep. Why isnt it reading it correctly? is the needle bouncing? or does it say full when your out of gas? more info..

 

[drowndindreams]

Well I've been noticing that I was filling up constantly,

and the other day I measured it, I filled up $20, and it went up to a quarter tank,
and by 35 miles she was already on E

 

[AtomicHoe094]

the fuel pump wouldnt have anything to do with inaccurate readings. I believe it would be the sending unit. Do you have a leak? do you notice the fuel pump whine getting louder??

 

[snowjay]

Try using a different gas, preferably a Top Tier manufacturer. toptiergas.com

In the mean time try putting a bottle of Techtron in the tank.



Bulletin No.: 05-00-89-078B
Date: February 06, 2008
INFORMATION
Subject:
GM Fuel System Treatment PLUS Fuel Sending Unit Corrosion and Fuel System Deposits

Models:
2008 and Prior GM Passenger Cars and Trucks (including Saturn)
2008 and Prior HUMMER H2, H3
2005-2008 Saab 9-7X

Supercede:
This bulletin is being revised to add model years. Please discard Corporate Bulletin Number 05-00-89-078A (Section 00 - General Information).
The GM Fuel System Treatment PLUS is not recommended for use with diesel fuel. The GM Fuel System Treatment PLUS is specially formulated for use in gasoline and/or E85 fuels.
GM Fuel System Treatment PLUS
GM Fuel System Treatment PLUS P/N 88861011 (for U.S. ACDelco(R) use 88861013) (in Canada 88861012) is now available for use in gasoline engines.
Added Benefits and Uses
The PLUS portion of GM Fuel System Treatment PLUS is the addition of a filmer additive that when used regularly can protect fuel system sending units from the corrosive effects of certain sulfur contaminants found in some of todays gasoline.
Sulfur contamination can disrupt electrical continuity of certain fuel sending units and lead to erratic or false fuel gauge readings. With scheduled usage GM Fuel System Treatment PLUS protects against the effects of harmful sulfurs in gasoline.
The Four Benefits
Just pour in one bottle of the GM Fuel System Treatment PLUS into the fuel tank when refueling around each oil change interval:
Cleans - Sulfur corrosion from fuel gauge sending units.
Prevents - Harmful sulfur components from attacking sensitive fuel system electronics.
Protects - By coating metallic surfaces of the fuel system.
Removes - Engine deposits left from use of poor quality fuels.

 

[drowndindreams]

Atomic : Yes it is possible the whiner is growing louder, but I'm not too sure of it. I haven't noticed any leak, and what would the sending unit cost me?

Snowjay : Techtron = ?

 

[AtomicHoe094]

http://www.autozone.com/autozone/ca...ere=&searchText=sendingunit&_requestid=712572
around 150 bucks?? are you going to do it yourself?

Or i can buy one from my work for ya and send it out, it would be less then that even with shipping, let me know

 

[snowjay]

Atomic : Yes it is possible the whiner is growing louder, but I'm not too sure of it. I haven't noticed any leak, and what would the sending unit cost me?

Snowjay : Techtron = ?

At your local auto parts store.

 

[drowndindreams]

Atomic, yeah, I'll do it myself, thanks for the offer though,

Snowjay, I didn't realize you were talking about fuel injector cleaning. Have it done about every 3 months.

 

[snowjay]

Not just any cleaner Techron which is the same as the GM cleaner mentioned in the TSB I posted.

 

[96ProCompTahoe]

make sure your ground on the pump harness is good to start with.

thats the fuel sending units for the 2-doors & Older suburbans. (metal flare nut connectors) you'll have to figure out if you have that one or the plastic quick connecters on your sending unit. (supposedly the Vortec 4-doors use the Q-connects)

pump was just a little over $100 at napa IIRC. GET THE DELPHI PUMP! don't buy one anywhere else.

 

[blackcoffee]

Gauge Cluster then Sending unit, I haven't read any posts sorry if this is a repeat. Oh and if you know anyone at GM try to get employee pricing on this shit. If you get employee pricing it will cost around $200 for each one of these. The sending unit is most likely the problem. Take it into a GM dealer with a 1/2 tank of gas and let them take a look.