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I purchased a 13 427 convertible in August of this year with 38k, and at 40k I experienced a full fuel system failure, and the car was brought into the dealer under warranty; that dumpster fire of a situation is an entirely different post.
the car has now sat for a month because of a back order on the “fuel lines”, which are in short supply because of the UAW Strike, which created a back order on all GM parts. Push as I might, warrant calls for GM OEM parts …
Does anyone know how back ordered parts are? Is my car going to collect dust until spring at the dealer lot?
Unsure if this applies to your current issue and just wanted to throw this out there for anyone researching fuel issues in the future; but the majority of times I've experienced, seen furst-hand or read about C6 fuel issues has been related to electrical issues running TO the fuel module. Ie a short between the fuse block and fuel module somewhere in the wiring or at the fuse block where it connects to the fuel pump relay.
Often dealerships fail to actually diagnose the issue and just start replacing parts.
Racatronix makes a harness that powers the fuel module off the alternator. Anyone with a C6 should install this honestly. The factory wiring/connections are fubar.
Afraid you may just be in for a long wait. Information concerning the availability of OEM parts should be something your dealer can provide, assuming you are using a GM dealer. Also, they should be able to perform a nationwide network search of all official GM dealer & online vendors for any parts they may have in stock, so ask them. As to after-market, you would have to perform that search on your own and ask them if they would perform the install just to get the car up & running.
I have a problem with the bottom seat heater in my driver seat in my 2013 GS and the part is discontinued by GM. However, my dealer stated they would install the part if I found an OEM part off-network. I did find one but decided I would install it myself. And I think I found the last one in existence.
I’d be interested in hearing about the dealer experience.
sorry you’re having issues…. Why do they need to replace the lines???
That’s a great question - one for which I don’t have an answer. They’ve simply said that it’s part of the repair process called for. Based on what little I’ve been able to find, I BELIEVE that he’s talking about the return line from tank to tank. When I showed him the diagram of ten different fuel lines, he said that it’s a steel line (which makes no sense to me).
Last edited by joshuacagney; Dec 18, 2023 at 01:52 AM.
Unsure if this applies to your current issue and just wanted to throw this out there for anyone researching fuel issues in the future; but the majority of times I've experienced, seen furst-hand or read about C6 fuel issues has been related to electrical issues running TO the fuel module. Ie a short between the fuse block and fuel module somewhere in the wiring or at the fuse block where it connects to the fuel pump relay.
Often dealerships fail to actually diagnose the issue and just start replacing parts.
Racatronix makes a harness that powers the fuel module off the alternator. Anyone with a C6 should install this honestly. The factory wiring/connections are fubar.
I wondered about that myself - particularly the relay, as you’ve said. I read the same thing consistently. I asked if they checked the relay, to which the SA said, “Of course.” But he also first diagnosed the issue as being a dead battery - two days after I installed a new battery.
I have zero confidence in this dealer or the SA, but the work has to be done at the dealer from which I purchased the car, according to the warranty.
Afraid you may just be in for a long wait. Information concerning the availability of OEM parts should be something your dealer can provide, assuming you are using a GM dealer. Also, they should be able to perform a nationwide network search of all official GM dealer & online vendors for any parts they may have in stock, so ask them. As to after-market, you would have to perform that search on your own and ask them if they would perform the install just to get the car up & running.
I have a problem with the bottom seat heater in my driver seat in my 2013 GS and the part is discontinued by GM. However, my dealer stated they would install the part if I found an OEM part off-network. I did find one but decided I would install it myself. And I think I found the last one in existence.
Overall a bad situation...GD
I’m afraid that you may be right. As sad as that may be. The service advisor indicated that he’s already done a nationwide search, and that he hasn’t been able to find anything. He indicated that there was some list for people waiting for this part, and that he expects that we will be on that list with an estimated ship date on Monday.I’m not sure if what General Motors is doing is focused on just in time inventory, or what, but it seems like this process is grossly mismanaged.
I also asked if they could install an aftermarket part, and he said they could not. That Chevrolet would only honor a warranty with a part that had the same part number as OEM. I then asked him if I found a used part and brought that to him, whether they would be able to install that, to which he said that the warranty company would not allow that. I feel like I’m at the wheel of Chevrolet and bad inventory management.
Most likely the metal feed hose in the center connecting the two tanks. They often get damaged when you remove them and dealers wont put them back without replacement. Here in Canada I see it in stock at many dealers and you can get the OEM part from amazon and many other places. They are probably just taking their sweet time with your car because they rather do the easy stuff first and warranty work doesn't pay well. They can over night that part if they really wanted to, the UAW strike mostly just affects parts for newer cars.
Nothing is on back order for our fuel systems, sounds like they are trying to pull every card possible. Wouldn't surprise me if they dropped the fuel tanks for nothing when the issue was electrical so now they pull out the shortage of part excuse so they can take their time putting it back together.
What is considered a "full fuel system failure"? DSOMC6 is correct in stating that dealerships fail to actually diagnose the issue and just start replacing parts and given your car is 10 years old you're at that wall where dealers really don't work on cars that old. This is because 1) the Techs don't know how & 2) OEM parts are discontinued. IMO a OEM part is just that, doesn't matter where it was sourced from. I can go out to Amazon and buy a number of GM OEM parts; dealers are not allowed (or won't) do that.
A good (take that with a grain of salt) specialty shop that knows these cars can provide a much better repair experience and are not tied to the "OEM" parts game.
I purchased a 13 427 convertible in August of this year with 38k, and at 40k I experienced a full fuel system failure, and the car was brought into the dealer under warranty; that dumpster fire of a situation is an entirely different post.
the car has now sat for a month because of a back order on the “fuel lines”, which are in short supply because of the UAW Strike, which created a back order on all GM parts. Push as I might, warrant calls for GM OEM parts …
Does anyone know how back ordered parts are? Is my car going to collect dust until spring at the dealer lot?
If I were you, I would find out exactly which parts they are needing and then find them myself if you can. Do whatever you can to get your car out of there as the longer it stays, the more likely the car will get damaged.
Unfortunately, I don't think that the parts are just backordered. I don't think GM will be making these parts anymore. Seems like many large companies have no interest in supporting any of their products by continuing to make parts. They want you to buy a new car and they do this on purpose.
I wondered about that myself - particularly the relay, as you’ve said. I read the same thing consistently. I asked if they checked the relay, to which the SA said, “Of course.” But he also first diagnosed the issue as being a dead battery - two days after I installed a new battery.
I have zero confidence in this dealer or the SA, but the work has to be done at the dealer from which I purchased the car, according to the warranty.
I just wanted to clarify; the issue I've experienced isn't the relay itself. It's the tiny connector itself inside the fuse block that the relay actually plugs into.
A simple fix is to either unseat the fuse block and pull that section of the fuse block apart (one of three), cut/splice in a new connector. Or in my case at the time; slightly re-crimp the connector and add dielectric grease to the connector itself. Thus allowing the relay post to make sufficient contact eliminating the intermittent short at the relay.
Eventually I installed the Racetronix wiring harness and eliminated powering my fuel module through the fb entirely....the best solution.
Seldom do these pumps actually fail (walbro) unless overheated substantially, which is rare, IMHO. A simple troubleshoot test would be to run a separate 12v powered wire to the external fuel module harness at the connector and see if the pump kicks on. Which the dealer technician is unlikely to do as mentioned above.I ran additional voltage via a boost-a-pump for years spinning the pump at higher speeds on demand and the pump was fine up until the day I upgraded to a return style system with entirely different fuel pump etc for e85.
As far as the corrugated metal crossover tube; Im uncertain why they'd replace that unless simply dealer protocal? Generally it's the plastic looking tubing running inside the crossover tube needing replaced due to being stuck and brittle because of age etc. I'd think you could source those parts (comes with the orings) about anywhere. Even a useable crossover tube can be sourced at various salvage yards. I'd probably supply my own crossover tube if they fubar'd the original removing it and just sign a waiver if it meant.repairing my car timely. IIRC the crosdover tube isn't pressurized at all. It simply protects the tubing/lines runing to and from the passenger-side tank.
That’s a great question - one for which I don’t have an answer. They’ve simply said that it’s part of the repair process called for. Based on what little I’ve been able to find, I BELIEVE that he’s talking about the return line from tank to tank. When I showed him the diagram of ten different fuel lines, he said that it’s a steel line (which makes no sense to me).
Note that this diagram is for early C5s. The C6 is pretty different. On the C6, the openings for the pumps are on top, and almost all of that plumbing lives inside the tanks.
I don't see any fuel lines in the Special Coverage Adjustment parts list:
Note that this diagram is for early C5s. The C6 is pretty different. On the C6, the openings for the pumps are on top, and almost all of that plumbing lives inside the tanks.
I don't see any fuel lines in the Special Coverage Adjustment parts list:
C6 Fuel Pump Repair Issues
