Fuel sending unit problem
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From: Kansas
Fuel sending unit problem
Does anyone here know if there is a problem with the fuel sending unit getting sulfer corrosion and makes it stop working? I know that the C5 Corvettes have an issue and apparrently 1999 and up GM light trucks have the same issue. Now I am wondering if this is a future problem with the Bonneville.
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From: Purgatory
The only fuel gauge problems we've had so far were a bad ground wire in 2k+ bonne'*.
There was a warning a while back about using Shell gas as it contains too much sulfur for our gm fuel injectors?
There was a warning a while back about using Shell gas as it contains too much sulfur for our gm fuel injectors?
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Not really sure what is the exact cause, but we do know that the fuel sender is known to fail on our cars. I know for sure that it is a '96-99 issue and have no reason to believe that other years are any better.
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From: Kansas
Originally Posted by lash
Not really sure what is the exact cause, but we do know that the fuel sender is known to fail on our cars. I know for sure that it is a '96-99 issue and have no reason to believe that other years are any better.
My guess is that this is the same issue that the other GM products have. According to a GM tech, GM has come out with a Fuel system additive. Here is the info I found:
GM Fuel System Treatment PLUS, Fuel Sending Unit Corrosion and Fuel System Deposits #05-00-89-078 - (Nov 9, 2005)
2006 and Prior All GM Cars and Trucks
2003-2006 HUMMER H2
2006 HUMMER H3
2006 and Prior Saturn (Canada Only)
2005-2006 Saab 9-7X
GM Fuel System Treatment PLUS
GM Fuel System Treatment PLUS, P/N 88861011 (for U.*. ACDelco®, use 88861013) (in Canada, 88861012), is now available.
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 today'* 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.
You Get Four Benefits
One bottle of GM Fuel System Treatment PLUS added to the fuel tank at each oil change:
• 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.
GM Fuel System Treatment PLUS will replace the original GM Fuel System Treatment, P/N 12345104 (in Canada, 89020804). The original formula may still be available for a limited time, and provides the excellent Fuel System Cleaning aspects of the new product without the filmer.
2006 and Prior All GM Cars and Trucks
2003-2006 HUMMER H2
2006 HUMMER H3
2006 and Prior Saturn (Canada Only)
2005-2006 Saab 9-7X
GM Fuel System Treatment PLUS
GM Fuel System Treatment PLUS, P/N 88861011 (for U.*. ACDelco®, use 88861013) (in Canada, 88861012), is now available.
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 today'* 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.
You Get Four Benefits
One bottle of GM Fuel System Treatment PLUS added to the fuel tank at each oil change:
• 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.
GM Fuel System Treatment PLUS will replace the original GM Fuel System Treatment, P/N 12345104 (in Canada, 89020804). The original formula may still be available for a limited time, and provides the excellent Fuel System Cleaning aspects of the new product without the filmer.
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From: Kansas
Originally Posted by lash
Hmmmm....interesting. So let me guess, it'* only available through your friendly neighbohood GM dealer, right? 
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From: Central Florida
Originally Posted by Toms94
Originally Posted by lash
Hmmmm....interesting. So let me guess, it'* only available through your friendly neighbohood GM dealer, right?
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Originally Posted by vital49
For what it'* worth, the sender failed on my 99. We dealt with it for about a year (using the trip odometer). I ended up swapping out the faulty unit for a new GM one. It'* a pricy SOB....$330. 