Botched fuel pump job/Need help!

Asked by denalidriver Oct 20, 2009 at 07:21 PM about the 2000 GMC Yukon Denali 4WD

Question type: Maintenance & Repair

I changed the fuel pump on my "99 Denali.  I couldn't find the right tool to disconnect the pump from the line so I cut the plastic from the old pump.  I then tried to get the plastic pieces out of the line and couldn't, I ended up damaging the line.  I put it back together and it rode and accelerated much better but, idled very rough.  I drove it scarcely over the next couple of days thinking it would settle in and begin working properly.  when it didn't I knew I had to go back and replace the line. But now it's not starting.  

My questions are:
What is the right fuel line disconnection tool for a '99 Denali?
Once I change the line, how do i get it started?
Is there air in the lines?

Please Help

1 Answer
65

Kevin answered 14 years ago

go onto snapon.com website and type in fuel line disconnect there will be different options pick one. Yes there is air in the lines. It is not like your brake system where it has to be air free. Your fuel drains back into your tank after a while, most systems hold 20 psi in the rails for a quick restart. When you say its not starting, is it cranking? did you blow the fuel pump fuse? did you check the fuel pump relay? have you tested for power?

Mark helpful

Your Answer:

Related Questions

  • Botched fuel pump job/Need help! 1 Answer

    I changed the fuel pump on my "99 Denali. I couldn't find the right tool to disconnect the pump from the line so I cut the plastic from the old pump. I then tried to get the plastic pieces out of th...

    2000 GMC Yukon Denali 4WD

    -

    Maintenance & Repair

  • Fuel pump 2 Answers

    Fuel pump would t turn on, crank but no start. Pushed to curb, left overnight, came back in morning and fuel pump turned on as if nothing happened. Drive for about a month, daily driver, started ...

    2000 GMC Yukon Denali 4WD

    -

    Maintenance & Repair

  • Fuel pump relay 2 Answers

    I am looking for the location of the fuel pump relay on a 2002 GMC Yukon Sle 5.3l

    2002 GMC Yukon SLE

    -

    Maintenance & Repair

  • Fuel pump not engaging when turn on position 3 Answers

    When I turn my ignition on the fuel pump does not engage I cannot hear it does this mean that I need a replacement?

    2001 GMC Yukon SLE

    -

    Maintenance & Repair

  • Fuel pump relay 6 Answers

    Working on my 2002 gmc yukon fuel problem. Found at my relay I have power on one prong of the relay but when I crank it I have no power to my load side feed. I've been messing with it for a week a...

    2002 GMC Yukon 4WD

    -

    Maintenance & Repair

Shortcuts

Search GMC Yukon Questions

CarGurus Experts

  • #1
    MikeDaGeek
    Reputation
    9,640
  • #2
    clayduster71
    Reputation
    5,170
  • #3
    David Boccabello
    Reputation
    4,000
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Tahoe
16 Great Deals out of 785 listings starting at $7,499
Used Cadillac Escalade
20 Great Deals out of 448 listings starting at $5,000
Used GMC Yukon XL
14 Great Deals out of 708 listings starting at $9,999
Used GMC Sierra 1500
141 Great Deals out of 7,842 listings starting at $4,944
Used Chevrolet Suburban
8 Great Deals out of 530 listings starting at $5,000
Used Ford Expedition
21 Great Deals out of 631 listings starting at $5,999
Used Ford F-150
305 Great Deals out of 13,473 listings starting at $3,888
Used Chevrolet Silverado 1500
167 Great Deals out of 7,420 listings starting at $6,995
Used Toyota Sequoia
5 Great Deals out of 59 listings starting at $19,990
Used Toyota 4Runner
22 Great Deals out of 524 listings starting at $14,995
Used Lincoln Navigator
6 Great Deals out of 296 listings starting at $16,990
Used Dodge Durango
53 Great Deals out of 1,850 listings starting at $6,987
Used GMC Sierra 2500HD
34 Great Deals out of 2,123 listings starting at $8,490

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.