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Username Post: Noisy fuel pump        (Topic#95466)
BigChevy80 
Senior Member
Posts: 598
BigChevy80
Age: 31
Loc: Gridley, IL
Reg: 12-04-03
03-25-05 03:47 AM - Post#657980    

What is it with the 1995-98 Chevy fuel pumps? Both my '98 and the '96 that I used to have were noisy as hell. I can roll all the windows up and drive down the road and STILL hear the pump whining plain as day. Every truck I've seen from these years does it. I've had my '98 for about a month now and I'm SICK of listening to it.

My father-in-law has a 2002 Suburban, a 2002 Silverado and a 2004 Silverado. None of his vehicles have noisy fuel pumps. Is there a different or later-model pump I can put in it that will not make this gawd-awful noise?
Tony

1991 Chevrolet C1500
1998 Ford Explorer

"Natural Gas Vern! Kinda like your first wife: hot, fast and cheap!" --Ernest P. Worrell


 
Low priced Genuine GM Auto Parts
Anonymous 

Re: Noisy fuel pump
03-25-05 04:43 AM - Post#657981    
    In response to BigChevy80

my 95 doesn't make any noise. That year is a TBI pump and they were quieter though. 96 up have vortecs.

 
Boog 
Super Senior Member
Posts: 3573
Boog
Loc: Central Arkansas
Reg: 04-28-02
Re: Noisy fuel pump
03-27-05 02:21 AM - Post#657982    
    In response to

The factory fuel pumps are normally quiet. A stopped up fuel filter will make the pumps somewhat louder.
Most of the loud pumps I've seen are most normally aftermarket pumps. I have one in my 88 right now that is as loud as yours, windows up and driving down the street and still hear it. It is a non AC pump some one else put in. My 97 Burb has a new AC pump in it and it's perfectly quiet.
Boog
69 Chevy step
06 GMC ccsb Z71
00 GMC excab Z71
All GM...'nuff said!
JR Nation


 
martinez 
Member
Posts: 56

Loc: Venezuela
Reg: 10-16-04
Re: Noisy fuel pump
03-27-05 12:57 PM - Post#657983    
    In response to BigChevy80

Maybe you have a cheap aftermarket pump... I always used the AC Delco with great results, not noisy at all.
2006 Silverado 1500


 
acesttz 
Member
Posts: 24

Loc: Jacksonville, FL
Reg: 11-15-03
Re: Noisy fuel pump
03-27-05 01:46 PM - Post#657984    
    In response to martinez

My AC Delco pump raises hell and it only has 10,000 miles on it. What is worse, the dealer will not warranty it for the noise.

 
BigChevy80 
Senior Member
Posts: 598
BigChevy80
Age: 31
Loc: Gridley, IL
Reg: 12-04-03
Re: Noisy fuel pump
03-27-05 02:31 PM - Post#657985    
    In response to martinez

I know I am not crazy. EVERY '96-'98 truck I have ever seen does it. My '98 does it, my old '96 did it, my uncle's '97 does it, my friend's '96 does it, my other friend's '98 does it, etc etc etc.

It's not unbearably loud, but it's definately noticeable. It was worse on my '96 because it had a rear slider window.

I just wonder what they did differently on the newer trucks?
Tony

1991 Chevrolet C1500
1998 Ford Explorer

"Natural Gas Vern! Kinda like your first wife: hot, fast and cheap!" --Ernest P. Worrell


 
someotherguy 
Moderator
Posts: 25984
someotherguy
Age: 44
Loc: Texas
Reg: 08-01-03
Re: Noisy fuel pump
03-27-05 02:43 PM - Post#657986    
    In response to BigChevy80

My '96 was VERY loud.. can't hear my '92 or '94 at all while running.

I have a parts-house brand pump in the '92 that I installed (long before I got on CT and read horror stories of using non-GM pumps) and the only time you hear it is if you turn the key on and wait before starting.

Dunno if the pump in the '96 was original or not since I bought the truck with plenty of miles on it, but man it was loud. Ran great though..

Richard
94 C2500LD / 97 Suburban LS1 / 06 300C SRT8
Check out my truck shop projects


 
Boog 
Super Senior Member
Posts: 3573
Boog
Loc: Central Arkansas
Reg: 04-28-02
Re: Noisy fuel pump
03-27-05 03:09 PM - Post#657987    
    In response to BigChevy80

It's really only a problem when it no longer makes any noise at all...
Boog
69 Chevy step
06 GMC ccsb Z71
00 GMC excab Z71
All GM...'nuff said!
JR Nation


 
John 
Dedicated Enthusiast
Posts: 7196
John
Age: 45
Loc: Montgomery, AL
Reg: 01-15-02
Re: Noisy fuel pump
03-27-05 03:17 PM - Post#657988    
    In response to someotherguy

Both my 96 and my 99 have the Vortecs, the 99 was bought with 44,000 on it and it's up to 95,000. The 96 was bought with 60,000 on it and it's up to 115,000. The 99 has had a noisy pump since I bought it, the 96 is much more quiet. Given the mileage on each when we bought the trucks, I suspect but can't be certain that they're original. But look at the mileage each has given me. Noise does not seem to relate to a "good" or "bad" pump and I have no idea why some are noisier than others. It may bother you, but it may also give you years of good service, or depending on current mileage it may have already given years of good service. If it's working good, I'd live with it. They're not all that cheap or easy to replace.
1979 2wd K5 Blazer, 350/TH350
1985 4x4 M1009 K5 Blazer, 6.2/TH400


 
G35Vortec454 
Senior Member
Posts: 470
G35Vortec454
Loc: Southern California
Reg: 12-26-04
Re: Noisy fuel pump
03-27-05 03:28 PM - Post#657989    
    In response to BigChevy80

The noise also is attributed to the kind of tank the pump is installed in. Some trucks have a plastic/rubber shield that helps reduce the noise too. It's in the bare metal tanks that makes the loudest sound.
1998 454 Vortec in a 79 Vandura G35 Dually B+ RV, 4L80E, BW4470/2.72-underdrive, ARB switchable 4.10:1 differential locker, 19.5 Rickson wheels, 34-inch 14-ply Bridgestone M724s.
1987 Vandura 3500 5.7 (K) TBI / 700R4, Harbor Workmaster body.


 
BigChevy80 
Senior Member
Posts: 598
BigChevy80
Age: 31
Loc: Gridley, IL
Reg: 12-04-03
Re: Noisy fuel pump
03-28-05 02:45 PM - Post#657990    
    In response to someotherguy

Quote:

My '96 was VERY loud.. can't hear my '92 or '94 at all while running.

I have a parts-house brand pump in the '92 that I installed (long before I got on CT and read horror stories of using non-GM pumps) and the only time you hear it is if you turn the key on and wait before starting.

Dunno if the pump in the '96 was original or not since I bought the truck with plenty of miles on it, but man it was loud. Ran great though..

Richard




The pumps on the older TBI trucks aren't loud at all. You can't even hear them. It's the later Vortec pumps that are loud. I guess it must have somthing to do with the greater pressures needed for the different type or fuel injection?

I have no doubt that my current fuel pump will give years of service... I just wish I could replace it with one that wasn't so damn LOUD!!

I know how hard they are to replace, as I've done quite a few ow them in the past. And I don't consider it to be THAT big of a job (as long as the fuel tank is almost empty when you drop it).
Tony

1991 Chevrolet C1500
1998 Ford Explorer

"Natural Gas Vern! Kinda like your first wife: hot, fast and cheap!" --Ernest P. Worrell


 
chrisk1500 
Very Senior Member
Posts: 1817
chrisk1500
Loc: Saskatchewan, Canada
Reg: 10-30-04
Re: Noisy fuel pump
03-28-05 02:55 PM - Post#657991    
    In response to BigChevy80

Quote:

I know how hard they are to replace, as I've done quite a few ow them in the past. And I don't consider it to be THAT big of a job (as long as the fuel tank is almost empty when you drop it).




Yep, an empty tank and air tools as well as a transmission jack makes the job easy. I have got it down to around 1.5 hours from start to finish with a 10 minute beverage break
07.5 DMAX 2500 HD ext cab, 4x4, Edge EVO Race, 4" straight pipe, PPE tie rod sleeves, bushwhacker pocket flares, etc...

06 Escalade


 
jp233 
Senior Member
Posts: 1023
jp233
Loc: ATL, GA
Reg: 03-15-04
Re: Noisy fuel pump
03-29-05 01:46 AM - Post#657992    
    In response to chrisk1500

my 97 is noise as hell...... I can hear it with the windows up idling

i suspect mine's the original but i'd have to call Chevy and find out for sure again, but I dont believe it was ever changed (bought with 63K now 80)
'99 Ford F-250 SuperDuty 7.3L diesel
sold '97 Chevy Tahoe Z71
several Subarus
several bikes
not enough time


 
HA139 
Senior Member
Posts: 284

Reg: 07-11-04
Re: Noisy fuel pump
03-29-05 08:59 AM - Post#657993    
    In response to jp233

Hello All,

Replaced the fuel pump on my '99 Burb last March with 125,xxx (original fule pump). The old pump was noisy... bought the new one at Auto Zone and replaced it (Fuel filter as well), the new one was very quiet until about 1 month ago. It now has 145,000 on the clock.. replaced the fuel fliter about 2 months ago with an AC Delco filter. Well, after reading BOOG's comment about a clogged filter could make the pump noiseier I replaced it today and it is back to quiet as can be. You guys are great. Thanks much.
Michael

2009 Chevrolet Suburban
2007 Pontiac Grand Prix
Oklahoma City, Oklahoma


 
quick_16 
Senior Member
Posts: 221
quick_16
Loc: South Florida
Reg: 12-13-03
Re: Noisy fuel pump
03-29-05 03:37 PM - Post#657994    
    In response to HA139

My 1998 C2500 Suburban pump was loud as I rolled it off the dealer lot in 1998. It got very quiet at 143,000 miles, just about the exact same time the engine died. I still say the General was on narcotics when he designed that entire fuel system....
98 C2500 Suburban 05 M&M dual slip 4 link 236" Dragster 70 SS 454 Chevelle


 
vogelm1 
Member
Posts: 25

Loc: Wisconsin
Reg: 07-16-06
Re: Noisy fuel pump
08-25-06 02:55 PM - Post#657995    
    In response to quick_16

Earlier this spring my pump died so bought a Car Quest brand and after installation it sounds like popcorn popping inside the tank. Actually I think it's cavitating...does it with a full tank too. Anyone else experience this. It is rather annoying - and sounds like something is rattling apart in there. I've run it for about 9,000 miles now. I'm tempted to replace it just to see if I got a bum pump. What are your thoughts??

 
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