When I fill up the tanks and drive away, I get a "service fuel system" warning on the readout. My gas gauge is also pinned on "E". After a few minutes of driving everything returns to normal. Has anyone experienced these symtoms? It happened the last two fillups.

 

See this thread: http://forums.corvetteforum.com/show...post1560683340

 

I had this problem shortly after I bought by 05 C6. There was a defective sensor. It was replaced and the problem went away.

 

bad fuel card

 

This is a known problem with early 05's. Take it in and the dealer will know what to do.

 

Thanks for the advice. I failed to mention that I had the card replaced about 1 1/2 years ago. Think its the same problem?

 

i think it probably is. a lot of the early fixes were to replace with same card. then they made a few different ones for the problem. so depending when you got it fixed will be the factor

 

Mine was also replaced and the damn gauge is now doing exactly the same thing. If I swerve around a bit the gauge goes to full. Shame GM doesn't know how to engineer a gas gauge. A Gas Gauge for cris sake, unbelieveable. eddie

 

I remember that. When the problem first started GM thought they were dealing a few bad cards and replaced them with more bad cards. Most of the fixes today are just a flash.

 

No, take it to the dealer

 

Sadly even my '07 required replacement of the fuel card to resolve the same issue. This is going to be an expensive car to own after the warranty expires!

 

Since I bought my '05 (which has this issue) I have seen an "evolution" of solutions from replacing senders etc to finally a flash fix. I have read in a few threads the flash works, and have read fuel card replacement mostly does not. So I presume where the fuel card fix worked, the car actually did have a bad fuel card, where it didn't... etc. Seems worth trying the flash fix first (excuse my alliteration) in most cases which is what I will do.

 

 

I just posted this reply to a similar question in "C6 General Discussion"

DH


"Yes! I have an '05 MN6 Coupe.

The exact same thing happened to me two weeks ago. I was just finishing up my original tankful from CARMAX. I stopped at my local EXXON station to fill up for the first time since picking up the car.

I had read previous posts about the problems with "Topping Off", so when it clicked I removed the nozzel and left the station. At first my fuel guage read about 3/4 full and gradually, within about 30 seconds, pegged over to full.

About a mile down the road I noticed the "Service Fuel System" message and noticed that my gauge needle had pegged over to empty.

After a few more miles, the message went away and my needle pegged back over to full. It flipped/flopped a couple more times before I got home (about 15 miles from the station), but ended with the message showing and the fuel gauge indicating empty.

When I went out to drive it the following weekend (last weekend), the message was gone and the fuel gauge was indicating full, but the "Check Engine Light" came on and has continued to stay on through my weekend drive yesterday. Fuel gauge still operating normally and no "Service Fuel System" messages since the first incident two weeks ago.

I decided to put "ONSTAR" to work and asked them for a on the spot diagnostic check to see exactly what was causing the "Check Engine Light" to remain lit.

They came back and said that the CEL was due to some malfunction of the fuel gauge and that it wasn't something that required immediate attention, especially if the gauge appeared to working normally.

I also tried fiddling around with the gas cap, but it didn't affect the CEL at all, its still lit.

Do a forum search, there are several extensive threads regarding this problem, it's well documented and discussed.

Let us know if you are able to get it resolved.

DH"