fuel pump replace cost
Thread Starter
3rd Gear
Joined: Jun 2016
Posts: 3
Likes: 0
fuel pump replace cost
cost to replace fuel pumps on 2008 automatic? I experienced a "random loss in power upon crank" twice, and then then engine light turned on and hasn't turned off. Autozone pulled the codes, and I got the fuel pump error code. Also hearing some strange noise from the exhaust, sounded like a supercharger, though the car is naturally aspirated albeit for a cai. I'm thinking all signs point to fuel pumps.
no loss in power while driving, just the loud weird noise at 1800RPM+.
no loss in power while driving, just the loud weird noise at 1800RPM+.
Drifting
Joined: Jun 2009
Posts: 1,301
Likes: 231
From: Queen Creek AZ
First of all, if I were you, I would take the car to either a dealer, or to an independent shop that has experience with working on Corvettes, and have them diagnose the actual problem. That being said, I had my driver's side fuel pump and tank replaced at the dealer because of the dreaded "gas smell". My car is also an 08 with A6, and it cost me $3000. However, I had mine repaired last year, and from what I hear on this forum, there is a National Backorder for the GM C6 fuel pumps, and some have been waiting for months to get their cars repaired.
Because of the expense of the fuel pump replacement, I would make sure that is the actual problem before throwing parts at my car. JMHO
Because of the expense of the fuel pump replacement, I would make sure that is the actual problem before throwing parts at my car. JMHO
Melting Slicks
Joined: Dec 2013
Posts: 2,232
Likes: 315
From: Bridgewater New Jersey
First of all, if I were you, I would take the car to either a dealer, or to an independent shop that has experience with working on Corvettes, and have them diagnose the actual problem. That being said, I had my driver's side fuel pump and tank replaced at the dealer because of the dreaded "gas smell". My car is also an 08 with A6, and it cost me $3000. However, I had mine repaired last year, and from what I hear on this forum, there is a National Backorder for the GM C6 fuel pumps, and some have been waiting for months to get their cars repaired.
Because of the expense of the fuel pump replacement, I would make sure that is the actual problem before throwing parts at my car. JMHO
Because of the expense of the fuel pump replacement, I would make sure that is the actual problem before throwing parts at my car. JMHO
This is good advice as I've read on this forum of issues that turned out NOT being the fuel pump.
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Safety Car
Joined: Nov 2006
Posts: 3,667
Likes: 159
The reason I know is I personally took pictures of the part numbers, I was going to have the dealer upgrade mine (at my cost) while they were replacing a bad fuel sensor under warrenty. I have another thread out here with all the details too (pics, part numbers of the different versions, etc.)
They showed me in the dealer manual that they are interchangable too, and many out here have installed the Z06 (LS7) fuel pump in their LS3's.
Team Owner
Joined: Jun 2005
Posts: 46,295
Likes: 2,596
From: Northern, VA
St. Jude Donor '15
"In honor of jpee"
First of all, if I were you, I would take the car to either a dealer, or to an independent shop that has experience with working on Corvettes, and have them diagnose the actual problem. That being said, I had my driver's side fuel pump and tank replaced at the dealer because of the dreaded "gas smell". My car is also an 08 with A6, and it cost me $3000. However, I had mine repaired last year, and from what I hear on this forum, there is a National Backorder for the GM C6 fuel pumps, and some have been waiting for months to get their cars repaired.
Because of the expense of the fuel pump replacement, I would make sure that is the actual problem before throwing parts at my car. JMHO
Because of the expense of the fuel pump replacement, I would make sure that is the actual problem before throwing parts at my car. JMHO
As said, don't just throw parts at it because "it seems like the right thing to do." 
Burning Brakes
Joined: Jun 2015
Posts: 1,192
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From: Shelbyville Kentucky
Melting Slicks
Joined: Sep 2011
Posts: 3,021
Likes: 171
From: Vancouver Island
My fuel pump died with no unusual noise, and no "fuel pump error code". I did get the P0171 and P0174 lean codes and progressively worsening engine sputtering and stalling.
Your pump might be fine, it could be a bad relay, bad injector, or some other issue given the noise you're hearing. As others posted above, get it properly diagnosed before you throw parts and money at it. Its best to follow the service manual diagnostic procedure for whatever code and symptoms you have, which likely involves checking voltage through the circuit to the pump and fuel pressure from the pump.
Your pump might be fine, it could be a bad relay, bad injector, or some other issue given the noise you're hearing. As others posted above, get it properly diagnosed before you throw parts and money at it. Its best to follow the service manual diagnostic procedure for whatever code and symptoms you have, which likely involves checking voltage through the circuit to the pump and fuel pressure from the pump.
Burning Brakes
Joined: Oct 2013
Posts: 993
Likes: 105
From: Dallas TX
St. Jude Donor '15
Is there a Corvette performance shop with certified GM mechanics who can check it out and maybe do the work for you?
If you're out of warranty, might be worth a shot
If you're out of warranty, might be worth a shot
Last edited by BigMonkey73; Jun 6, 2016 at 04:35 PM.
Team Owner
Joined: Mar 2014
Posts: 21,631
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From: Below the bottom of Berby Hollow, NYS
When I was young we would put electric fuel pumps in our mostly stock cars, thinking "Hey, more pressure, more gas, more power." Pretty simple.
But all the pump did was supply more pressure to the carb. Once the fuel got past the float valve to the float bowl it was at atmospheric pressure and the fuel pump was out of the equation. From there it was sucked into the engine on demand.
As long as the float bowl(s) were kept full, that was all that was necessary. Soup the engine, add more carbs, then you may need a bigger fuel pump. Otherwise, it did nothing.
I'm guessing that modern FI systems get all the pressure/volume of fuel they need, and adding more pressure or volume will do absolutely nothing to a factory engine.
But I could be all wet too.
Team Owner
Joined: Aug 2003
Posts: 24,500
Likes: 312
From: Scottsdale AZ
Although slightly different in design, the fuel pump on my c5 ran about $800 including the tow.
Team Owner
Joined: Mar 2014
Posts: 21,631
Likes: 1,144
From: Below the bottom of Berby Hollow, NYS
Safety Car
Joined: Nov 2007
Posts: 4,435
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From: Bay Area CA
Team Owner
Joined: Mar 2014
Posts: 21,631
Likes: 1,144
From: Below the bottom of Berby Hollow, NYS
Safety Car
Joined: Nov 2007
Posts: 4,435
Likes: 874
From: Bay Area CA
Disclaimer: I know nothing of modern FI systems, and I'm not a betting man, but I would bet that putting in a more powerful fuel pump will give you zero more horsepower or any other advantage.
When I was young we would put electric fuel pumps in our mostly stock cars, thinking "Hey, more pressure, more gas, more power." Pretty simple.
But all the pump did was supply more pressure to the carb. Once the fuel got past the float valve to the float bowl it was at atmospheric pressure and the fuel pump was out of the equation. From there it was sucked into the engine on demand.
As long as the float bowl(s) were kept full, that was all that was necessary. Soup the engine, add more carbs, then you may need a bigger fuel pump. Otherwise, it did nothing.
I'm guessing that modern FI systems get all the pressure/volume of fuel they need, and adding more pressure or volume will do absolutely nothing to a factory engine.
But I could be all wet too.
When I was young we would put electric fuel pumps in our mostly stock cars, thinking "Hey, more pressure, more gas, more power." Pretty simple.
But all the pump did was supply more pressure to the carb. Once the fuel got past the float valve to the float bowl it was at atmospheric pressure and the fuel pump was out of the equation. From there it was sucked into the engine on demand.
As long as the float bowl(s) were kept full, that was all that was necessary. Soup the engine, add more carbs, then you may need a bigger fuel pump. Otherwise, it did nothing.
I'm guessing that modern FI systems get all the pressure/volume of fuel they need, and adding more pressure or volume will do absolutely nothing to a factory engine.
But I could be all wet too.
Your comparing apples to oranges with carbureted engines and fuel injection. Flow rates are completely different.
Carbureted engines require 5-7 psi of fuel pressure.
Fuel Injected engines around 58 psi.
Direct fuel injection around 2100 psi.
Last edited by Mike's LS3; Jun 6, 2016 at 06:47 PM.