Chevy Tahoe sluggish
20

Asked by Cory Jul 18, 2021 at 06:08 PM about the 2003 Chevrolet Tahoe Z71 4WD

Question type: Maintenance & Repair

2003 Chevy Tahoe Z71 5.3L v8 non flex fuel.

When I bought it a year ago I use to get about
15mpg then my tranny went out I put a new one in.
But it sat for a few months in the process so after I
fixed it I only get about 11mpg now. I've changed
the fuel filter, I put a intake on it, the plugs/wires
also have cleaned my throttle body and my maf
sensor and still the same now when it gets to 1/4
tank or less its super sluggish taking off and
boggs.

4 Answers

F_O_R answered 3 years ago

Scan for codes. If the transmission is not shifting properly or slipping it might cause some of these problems.

Mark helpful

F_O_R answered 3 years ago

So? A lot of new transmissions are junk. If the problem coincided with the new transmission why would you not suspect it?

Mark helpful
3,360

Justin answered 3 years ago

Sounds like you may have some sludge in the bottom of the tank, disconnect it from the filler neck st the tank to syphon, then drop and flush the tank....also recommend flushing/replacing the fuel filter again as to may have trapped some of the sludge

Mark helpful

Your Answer:

Related Questions

  • Chevy Tahoe sluggish 4 Answers

    2003 Chevy Tahoe Z71 5.3L v8 non flex fuel. When I bought it a year ago I use to get about 15mpg then my tranny went out I put a new one in. But it sat for a few months in the process so after I f...

    2003 Chevrolet Tahoe Z71 4WD

    -

    Maintenance & Repair

  • Chevy tahoe 3 Answers

    Wifes Chevy Tahoe just suddenly stopped giving speedometer readout (digital) and none of turn signals or emergency flashers are working.

    Chevrolet Tahoe

    -

    Maintenance & Repair

  • 2004 Chevy Tahoe transmission 3 Answers

    Will 2004 Chevy Tahoe transmission fit in a 2005 Tahoe

    2005 Chevrolet Tahoe LT 4WD

    -

    Maintenance & Repair

  • Chevy Tahoe 6 Answers

    My moms Tahoe squeals when she turns sharply slowly and it also says tire pressure monitor service

    2011 Chevrolet Tahoe LT RWD

    -

    Maintenance & Repair

  • 2001 Chevy tahoe 1 Answer

    Will front clip off a 2000 Chevy z71 1500 fit on 2001 chevy tahoe

    2001 Chevrolet Tahoe 4WD

    -

    Maintenance & Repair

Tahoe

Looking for a Used Tahoe in your area?

CarGurus has 32,666 nationwide Tahoe listings starting at $1,450.

ZIP:

Own this car?

Share your experience with others.

2003 Chevrolet Tahoe

Write a car review

Review another car

Shortcuts

Search Chevrolet Tahoe Questions

CarGurus Experts

  • #1
    John Carson
    Reputation
    3,580
  • #2
    Rowefast
    Reputation
    2,320
  • #3
    Gene Arnett
    Reputation
    2,170
View All

Know more, shop wisely

Search

Related Models For Sale

Used GMC Yukon
701 Great Deals out of 14,730 listings starting at $2,400
Used Chevrolet Suburban
616 Great Deals out of 17,013 listings starting at $1,599
Used Cadillac Escalade
385 Great Deals out of 8,621 listings starting at $3,900
Used Chevrolet Silverado 1500
4,202 Great Deals out of 119,842 listings starting at $1,999
Used Ford Expedition
1,045 Great Deals out of 37,160 listings starting at $1,373
Used GMC Sierra 1500
1,915 Great Deals out of 70,966 listings starting at $1,900
Used Toyota Sequoia
130 Great Deals out of 3,142 listings starting at $2,635
Used Ford F-150
6,357 Great Deals out of 168,639 listings starting at $1,450
Used GMC Yukon XL
460 Great Deals out of 12,156 listings starting at $2,995
Used Toyota 4Runner
1,004 Great Deals out of 10,351 listings starting at $3,900
Used Dodge Durango
827 Great Deals out of 20,378 listings starting at $850
Used Ford Explorer
2,319 Great Deals out of 55,860 listings starting at $1,248
Used Jeep Grand Cherokee
2,282 Great Deals out of 49,377 listings starting at $1,990
Used Chevrolet Silverado 2500HD
1,005 Great Deals out of 39,700 listings starting at $2,495

Used Cars For Sale

2024 Chevrolet Tahoe Z71 4WD For Sale
19 Great Deals out of 1,090 listings starting at $58,847
2023 Chevrolet Tahoe Z71 4WD For Sale
33 Great Deals out of 394 listings starting at $51,915
2022 Chevrolet Tahoe Z71 4WD For Sale
69 Great Deals out of 535 listings starting at $41,495
2021 Chevrolet Tahoe Z71 4WD For Sale
57 Great Deals out of 715 listings starting at $37,980

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.