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

Asked by 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

41,785

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.

Your Answer

GMC Sierra 1500 Experts

  • #1
    dragonflyoffshore
    Reputation
    5,390
  • #2
    John Saffrahn
    Reputation
    3,740
  • #3
    Glenn Clingenpeel
    Reputation
    3,430
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,237 Great Deals out of 168,220 listings starting at $995
Used Ford F-150
2,540 Great Deals out of 193,420 listings starting at $799
Used GMC Sierra 2500HD
106 Great Deals out of 13,796 listings starting at $2,999
Used Toyota Tundra
460 Great Deals out of 33,114 listings starting at $2,900
Used Dodge Ram 1500
381 Great Deals out of 10,880 listings starting at $1,500
Used Chevrolet Silverado 2500HD
287 Great Deals out of 29,837 listings starting at $2,795
Used Toyota Tacoma
570 Great Deals out of 43,899 listings starting at $2,500
Used GMC Yukon
425 Great Deals out of 22,410 listings starting at $1,995
Used Ford F-250 Super Duty
313 Great Deals out of 45,013 listings starting at $1,700
Used Chevrolet Tahoe
722 Great Deals out of 41,289 listings starting at $1,995
Used Chevrolet Colorado
285 Great Deals out of 33,629 listings starting at $1,900
Used Ford Mustang
608 Great Deals out of 36,209 listings starting at $1,800

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
81 Great Deals out of 23,696 listings starting at $23,378
2016 GMC Sierra 1500 For Sale
130 Great Deals out of 4,079 listings starting at $16,990
2015 GMC Sierra 1500 For Sale
162 Great Deals out of 5,191 listings starting at $16,900
2014 GMC Sierra 1500 For Sale
164 Great Deals out of 5,027 listings starting at $13,900
2013 GMC Sierra 1500 For Sale
75 Great Deals out of 2,125 listings starting at $8,450

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.