Question about 2003 Chevrolet Silverado 3500

1 Answer

My 2003 one ton Chevrolet Silverado Dually has two gas tanks that are suppose to syphon together. No switch, but only one tank is working right, the rear tank, the one with the fuel gauge always shows full and doesnt work like its suppose to. Any suggestions?

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

In regard to sender unit. Soak it in vinegar for a couple hours. Works awesome. I did this to my chevy pickup sender unit and now it works awesome. The problem is usually condensation over the years corrodes the brass wiper/rheostat. Vinegar is a mild acid and works excellent.

Posted on Oct 11, 2012

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

  • 1168 Answers

SOURCE: 2001 chevy silverado 4.8 gas gauge not working properly

Fairly common problem with GM vehicles. The sending unit in your tank has a small circuit board that an arm is attached to which moves up and down according to your fuel level. This circuit board and arm are not making good contact. Unfortunately the only good solution is to replace this part.

Posted on Oct 28, 2009

Testimonial: "thought probably that was it but better off replacing whole unit .i was for for gauge proplem thanks. "

  • 2920 Answers

SOURCE: fuel gauge fluctuates on 1995 chevrolet tahoe

if you replaced the tank and all i assume you didnt change the fuel pump. if you dint then all thats wrong is that the float on the fuel pump is gas logged and will move more than if you had put in a new pump thus the fluctuation in the guage.

Posted on Jan 28, 2009

Mike258
  • 1498 Answers

SOURCE: I need a color diagram for a 7 pin plug on my 2000

Hello,


Columns are Color, Function, Mark on the plug.

Seven wire Trailer plugs
:

Horse, stock or utility trailers:
White = Ground - 1
Blue = Electric Brakes - 2
Brown = Tail and clearance lights - 3
Black = Battery, aux power - 4
Yellow = Left turn/Brake - 5
Green = Right turn Brake - 6
Orange or Purple (not both) = Auxilliary or Reverse - 7

Recreational Vehicle:
White = Ground - 1
Blue = Electric Brakes - 2
Green = Tail and clearance lights - 3
Black = Battery, aux power - 4
Red = Left turn/Brake - 5
Brown = Right turn Brake - 6
Yellow = Auxilliary or Reverse - 7

Ground should be 10ga.
Others 14 ga

Best regards
Mike

Posted on Sep 09, 2009

  • 1857 Answers

SOURCE: 2002 Chevy Silverado 3500 Fuel gauge reads 1/2

If this was not a problem before the pump replacement then the sender in the tank may of faied or is contaminated with sulfer which is corrosive to the silver electrical contacts.

Do a search on sulfur corrosion and fuel sender units. Gm has big problem with this. Its possable the stress from removing the old and installing the new pump created an issue with contacts. If this is the case you will now need a sender unit.

Posted on Feb 17, 2010

carsandcomps
  • 722 Answers

SOURCE: i have a 1986 chevy 1/2 ton. the fuel gauge wasn't

When you changed the sending unit, was this in the tank? or does it have a manual that bolts to the block. If it is on the block, drop the tank (or take the bed off) and replace the float.

carsandcomps,

Guru, Premium Expert @Fixya.com

Posted on Apr 30, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I have a 2003 silverado, it starts fine in the morning but the rest of the day it cranks for a long time before starting. turning the key on and off a few times doesn't help. I have had the fuel pump


If the fuel pump is inside the gas tank, remove the gas cap, to equalize the air-pressure inside/outside the gas tank. That should let the fuel pump "suck" the gas from the tank.

Oct 31, 2014 | 2003 Chevrolet Silverado 1500

1 Answer

2003 Chevrolet Silverado 4.3 V6 with MFI. Engine ran not start.


Well it could be numerous if things but you want suggestions...So here's mine..Your gas tank might be vapor locked...This is caused from over filling your gas tank with gas over the years..Its when the pressure in your gas tank becomes greater than your fuel pump. It wont start until the pressure in your gas tank becomes lower then you fuel pump...Sounds crazy...This got me once...I didn't understand it...A lot of people (including me) Go to the gas station and get that extra 50 cent after the gas nozzle clicks off...over time that extra gas will run down the vapor lines intended to burn fumes....Like when you fill a gas can to cut your grass...If you sake the gas can it builds pressure and bows up. But with time that pressure will go away...Well saying that...Your gas tank needs to vent to....So your car burns not only gas but fumes...If you keep over filling your car with the extra gas it cloggs up your vapor canister intended for fumes or vapors...The gas will will go into that canister and clogg up the charcoal that's inside it. (Breaks it down) then the vapors can't get to your carburetor where it supposed to burns it. So what happens is the pressure in the gas tank becomes greater than your fuel pump and then car won't start..Are you with me? Lol Its crazy..Putting a different gas cap can cause the same thing...Simple test...When you open your gas cap to get gas.. Do you heat air sucking in.. Yes you can hear it....A lot of times loosening the cap let's the pressure out and the car will start right up.....Thus might not be your problem but worth telling at the gas pumps to other people..... Just trying to help

Jul 01, 2017 | 2003 Chevrolet Silverado 1500

1 Answer

Where is the gas pressure sensor on an 03 1500 5.3 Liter silverado located..any diagrams would be great


The fuel tank pressure sensor attached to the top of the fuel pump module on top of the gas tank.

Its the black pert on the top of the pump on the right side.

44b6ef7.jpg

Oct 29, 2010 | 2003 Chevrolet Silverado 1500

1 Answer

Adding extra fuel tank on a 2001 chevy dually crew cab long box


Actually,an aftermarket fuel tank is available that should bolt in in place of existing fuel tank that holds 55Gallons instead of the reg.30gal. check out this site...http://www.titanfueltanks.com/GMC_Chevy_Fuel_Tank.htm

May 04, 2010 | 2001 Chevrolet Silverado 3500

1 Answer

I have a 2003 sante fe that has died with a full gas tank. I have tried syphoning the gas out but it appears there is something blocking the syphon hose from going all the way into the tank. any...


there is a roll over ball blocking you if your vehicle was to roll over there is a ball that will close off filler neck trapping fuel for safety purposes under vehicle follow the filler neck down to tank beside the big filler neck hose should be a smaller hose remove that hose from tank and insert your syphon hose there this should work for you i assume you have determined that the uel pump is your problem and are trying to access the pump??

Apr 26, 2010 | 2003 Hyundai Santa Fe

4 Answers

Need to remove fuel from a 2003 tahoe fuel tank


Get an inexpensive manual transfer pump. Fuel tanks do not have drain plugs.

Sep 21, 2009 | 2003 Chevrolet Tahoe

2 Answers

I own a 2003 chevy silverado diesel dullay 4x4 and none of the controls work for the passenger side window, I need a wiring diagram.


Hi I have a 4x4 2003 chevy 3500 silverado dually with dual tanks
rear tank stoped pumping into front tank and was full . I siphoned the fuel out of rear tank and fuel gauge reads 9/16 full . is there a way to reset the fuel sending units so they can calculate the fuel readings. I always filled the two tanks with the same amount of fuel
until now ? I'm thinking there is a inkine fuel pump

Aug 31, 2009 | 2003 Chevrolet Silverado 3500

1 Answer

No power to left side fuel tank


Check the ground wire for good contact.

Apr 11, 2009 | 1988 Chevrolet C3500

2 Answers

Fuel sensor gauge


you will need to replace the fuel level sensor.(sending unit) it is in the tank and is hooked to the fuel pump. you can buy seperatly from pump. you may finf it easier to remove the bed if you have some help. it is six or eight bolts and harness unplugs then you can get right to it.

Jan 13, 2009 | 2001 Chevrolet Silverado 2500

Not finding what you are looking for?
2003 Chevrolet Silverado 3500 Logo

526 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

75117 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7772 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...