03 Avalanche replaced fuel pump 2 years ago, fuel pump recently failed again - it was replaced along with the fuel filter.Failed to start four times in the past month w/o pumping the gas pedal?

10

Asked by Jul 28, 2015 at 06:12 PM about the 2003 Chevrolet Avalanche 1500 RWD

Question type: Maintenance & Repair

2003 Chevy Avalance with 143K miles - it has been in the shop for two days and they cannot replicate the problem of it not wanting to start without pumping on the gas pedal - would could this be?

3 Answers

78,125

Pumping the gas pedal on a fuel injected engine does absolutely nothing but admit more air to the engine. I'd suspect a bad/dirty IAC (Idle Air Control) valve, or dirty throttle plate. You may have faulty fuel injectors flooding the engine. Check the spark plugs for gasoline fouling. You might want to check the throttle position sensor for proper operation too. HTH. -Jim

10

Good to know - it is kind of habit to try something like pumping the pedal when the engine does not start. Are you saying if we keep trying w/o hitting that pedal - it just might start?

1 people found this helpful.
78,125

It may. One other thing you can try is "cycle" the ignition key. Turn the key on but don't try to start it. Count to 5. Turn the key off then immediately try to start it. If that works every time, the fuel system is losing pressure. This is a sign of a failing fuel pump. On the other hand, if you think it's flooded, hold the gas pedal to the floor while cranking. This puts the computer in clear flood mode. In clear flood mode fuel delivery is greatly reduced until the engine gets going. HTH. - Jim

Your Answer

Avalanche

Looking for a Used Avalanche in your area?

CarGurus has 4,276 nationwide Avalanche listings starting at $2,500.

ZIP:

Chevrolet Avalanche Experts

  • #1
    Tom Demyan
    Reputation
    380
  • #2
    David Scott
    Reputation
    180
  • #3
    Oscar Leon
    Reputation
    160
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,779 Great Deals out of 149,922 listings starting at $828
Used Ford F-150
2,294 Great Deals out of 215,590 listings starting at $1,300
Used Chevrolet Tahoe
540 Great Deals out of 36,771 listings starting at $1,600
Used Cadillac Escalade EXT
14 Great Deals out of 592 listings starting at $3,300
Used GMC Sierra 1500
719 Great Deals out of 59,005 listings starting at $1,995
Used Dodge Ram 1500
306 Great Deals out of 9,553 listings starting at $1,750
Used Chevrolet Colorado
281 Great Deals out of 41,293 listings starting at $1,000
Used Cadillac Escalade
213 Great Deals out of 11,965 listings starting at $2,500
Used Toyota Tundra
482 Great Deals out of 38,912 listings starting at $1,999
Used Chevrolet Suburban
352 Great Deals out of 22,431 listings starting at $1,132
Used GMC Yukon
332 Great Deals out of 20,275 listings starting at $1,400
Used Chevrolet Camaro
238 Great Deals out of 28,878 listings starting at $1,800
Used Toyota Tacoma
404 Great Deals out of 45,131 listings starting at $1,995

Used Cars For Sale

2013 Chevrolet Avalanche For Sale
5 Great Deals out of 393 listings starting at $14,987
2012 Chevrolet Avalanche For Sale
3 Great Deals out of 229 listings starting at $9,995
2011 Chevrolet Avalanche For Sale
24 Great Deals out of 410 listings starting at $9,995
2010 Chevrolet Avalanche For Sale
9 Great Deals out of 220 listings starting at $8,995
2009 Chevrolet Avalanche For Sale
3 Great Deals out of 248 listings starting at $8,500

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.