Won't go over 2000rpm

Asked by May 11, 2017 at 10:34 PM about the 2004 GMC Sierra 1500

Question type: Maintenance & Repair

Won't go over 2000rpm or shift at 60mph when
trying to accelerate or trying to pass a car.truck
has a slight knocking noise or bumping noise  
when trying to do so. Then either holds at 60 and
gradually goes faster at a slow rate or it will start
to decelerate down as if it is in neutral​ or
something. Doesn't happen all the time but is
starting to happen more frequently. Any help is
greatly appreciated

1 Answer

73,775

Could be a number of things, first I would have the fuel delivery system checked, fuel pump pressure, bleed down test, and also could be the fuel regulator. Should check the spark plugs to see how it is firing, see that the plugs are not wet or blacken up with carbon indicating a problem with the ignition system. The knock may be coming from the engine, all depends.

Your Answer

GMC Sierra 1500 Experts

  • #1
    dragonflyoffshore
    Reputation
    5,360
  • #2
    John Saffrahn
    Reputation
    3,700
  • #3
    Glenn Clingenpeel
    Reputation
    3,380
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,137 Great Deals out of 167,424 listings starting at $1,900
Used Ford F-150
2,324 Great Deals out of 184,534 listings starting at $699
Used GMC Sierra 2500HD
111 Great Deals out of 13,517 listings starting at $2,999
Used Toyota Tundra
467 Great Deals out of 32,492 listings starting at $1,999
Used Dodge Ram 1500
362 Great Deals out of 10,960 listings starting at $1,500
Used Chevrolet Silverado 2500HD
318 Great Deals out of 29,131 listings starting at $2,995
Used Toyota Tacoma
634 Great Deals out of 43,276 listings starting at $1,500
Used GMC Yukon
406 Great Deals out of 21,586 listings starting at $1,495
Used Chevrolet Tahoe
649 Great Deals out of 39,641 listings starting at $1,000
Used Ford F-250 Super Duty
369 Great Deals out of 44,898 listings starting at $1,799
Used Chevrolet Colorado
280 Great Deals out of 31,655 listings starting at $1,995
Used GMC Canyon
125 Great Deals out of 13,139 listings starting at $3,322
Used Nissan Titan
210 Great Deals out of 20,002 listings starting at $3,495

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
79 Great Deals out of 30,079 listings starting at $18,488
2016 GMC Sierra 1500 For Sale
110 Great Deals out of 3,816 listings starting at $15,681
2015 GMC Sierra 1500 For Sale
138 Great Deals out of 4,884 listings starting at $16,900
2014 GMC Sierra 1500 For Sale
142 Great Deals out of 4,930 listings starting at $14,204
2013 GMC Sierra 1500 For Sale
74 Great Deals out of 2,043 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.