has no power going up hill with small boat on, on flat ground runs good

Asked by HP9933 Jul 28, 2015 at 03:01 PM about the 2004 GMC Sierra 1500 2 Dr SLE Standard Cab LB

Question type: Maintenance & Repair

had transmission repaired and engine tuned up but can walk faster up hills with 22 ft boat trailer on. ON flat ground unit runs out good, no check engine lights on, last time going to lake was running 4000 rpm and just barley moving  took whole tank of gas to get to lake

1 Answer
102,635

Reelin68 answered 8 years ago

Is your transmission down shifting while going up hills? If not, you may have a bad shift solenoid. Or a bad VSS on the transmission. If transmission is kicking down and you still have no power, I would check your cat converter. It may be plugged. I would pull a couple of plugs and check so see what color they are. If black, you may be having a fuel mixture problem. A bad ECT will cause mixture issues.

Mark helpful

Your Answer:

Related Questions

Shortcuts

Search GMC Sierra 1500 Questions

CarGurus Experts

  • #1
    yetilikesbeer
    Reputation
    12,350
  • #2
    dragonflyoffshore
    Reputation
    11,510
  • #3
    John Saffrahn
    Reputation
    11,450
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Silverado 1500
170 Great Deals out of 7,410 listings starting at $6,995
Used Ford F-150
319 Great Deals out of 13,568 listings starting at $3,888
Used GMC Sierra 2500HD
32 Great Deals out of 2,120 listings starting at $8,490
Used Toyota Tundra
23 Great Deals out of 927 listings starting at $10,698
Used Chevrolet Silverado 2500HD
21 Great Deals out of 1,592 listings starting at $5,990
Used Toyota Tacoma
37 Great Deals out of 782 listings starting at $9,975
Used GMC Yukon
9 Great Deals out of 934 listings starting at $6,900
Used Dodge RAM 1500
78 listings starting at $5,000
Used Chevrolet Tahoe
16 Great Deals out of 785 listings starting at $7,499
Used Ford F-250 Super Duty
22 Great Deals out of 749 listings starting at $3,990
Used GMC Canyon
26 Great Deals out of 844 listings starting at $4,777
Used Chevrolet Colorado
43 Great Deals out of 1,147 listings starting at $4,995

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.