Question about 2003 Chevrolet Tahoe

1 Answer

1999 tahoe fuel pump voltage

Voltage is 5vdc at the pump...should it be 12vdc...if so, what do i look for?

Posted by on

  • 1 more comment 
  • maxwell2942 Feb 12, 2009

    changed out fuel pump relay....checked cables as much as possible. should voltage at pump be 12vdc? what else can i check

  • yadayada
    yadayada May 11, 2010

    yes 12 volts

  • yadayada
    yadayada May 11, 2010

    a burned connector or defective fuel pump relay or socket.

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 223 Answers

12 volts!

Posted on Feb 13, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

2009 chevy tahoe fuel pump wont shut off


The fuel pump control module is controlled by the ECM - engine control module , Possibility of DTC'S stored ! You need to take to Chevy Dealer !
The engine control module (ECM) supplies voltage to the fuel pump control module (FPCM) when the ECM detects that the ignition is ON. The voltage from the ECM to the FPCM remains active for 2 seconds, unless the engine is in Crank or Run. While this voltage is being received, the FPCM closes the ground switch of the fuel pump and also supplies a varying voltage to the fuel tank pump module in order to maintain the desired fuel rail pressure.

Apr 22, 2015 | 2009 Chevrolet Tahoe

1 Answer

Its a 1999 chevy tahoe. Changed fuel pump twice.


Could be the pressure regulator on the fuel rail. Pull the vacuum line off the regulator and check it for fuel contamination. There should not be gas in the line. If there is fuel in that line the regulator is bad and needs replaced.

Sep 15, 2014 | 1999 Chevrolet Tahoe

1 Answer

Car want start after changing fuelpump


to change the pump , the fuel was drained out
so do you put it back and then prime the pump?
test for fuel pressure.
if non, then check for 12vdc at pump wires cranking
no 12v, you blew a fuse
if 12v good, the pump is bad or cant pump air, needs to be primed.

we check fuel pressure after every pump change;.
after all , that is and was the whole point of a new pump. right.
so check it.
over 30psi, (see FSM for full spec)

May 20, 2014 | 1997 Chevrolet Tahoe

1 Answer

Ecm 1 fuse blow when attemping to start vehicle 1999 chevorlet tahoe replaced fuel pump


So as I understand it the fuse only blew after a fuel pump job.

There is a TSB on repeated fuel pump failures with these trucks. The fix is to also replace the harness connector that plugs into the tank harness.

Unplg the harness and inspect it before you turn the key again if you suspect this.

Jan 24, 2010 | 1999 Chevrolet Tahoe

1 Answer

Repair book labor 1999 Tahoe Fuel Pump


the labor time is 2.1 hours,but that does not include the drain and refill, hope this helps. information from ALLDATA 10.10. Please rate my fix as i strive to be the best, if you need more help get back to me

Nov 22, 2009 | 1999 Chevrolet Tahoe

1 Answer

What kind of fuel pump will i need for my 1999 tahoe?


HERE IS THE PART NUMBER, YOU WILL ALSO NEED A NEW FUEL PUMP CONNECTOR, THEY ARE ONE OF THE PROBLEMS THAT ONTRIBUTE TO THE FUEL PUMP FAILURE.
DELPHI Part # FG0089 {MODULAR FUEL PUMP ASSEMBLY} $174.79

Jul 17, 2009 | 1999 Chevrolet Tahoe

2 Answers

1996 chevy tahoe fuel system


check for voltage at the pump. If it has 12v there, (and a good ground) then pump is bad. there may be a pump fuse on the fuse block (can't remember) but if you find it has blown, the pump may be getting ready to fail. If fuse fixes the problem, replace it and carry an extra with you, then change the pump.

May 14, 2009 | 1996 Chevrolet Tahoe

1 Answer

5.7 vortex loses prime while siting 24hrs spray ether, starts up and restarts, new fuel pump one year


We've been having the same problem with our 1999 Tahoe. We were also told either fuel pump, fuel regulator, or injector. We believe it is the fuel injectors, particularly since reading this:

http://www.arb.ca.gov/newsrel/nr021103.htm


Oct 26, 2008 | 1999 Chevrolet Tahoe

1 Answer

Fuel Pump


its pretty basic....remove 2 strap bolts....lower tank a little.....disconnect hoses and wires and lower the rest of the way

Sep 27, 2008 | 1999 Chevrolet Tahoe

Not finding what you are looking for?
2003 Chevrolet Tahoe Logo

Related Topics:

45 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

61037 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

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

Answer questions

Manuals & User Guides

Loading...