at what rpm should engine run at 55mph out of tow/haul mode

Asked by swade2500 Jan 02, 2014 at 04:35 PM about the 2003 Chevrolet Silverado 2500HD 4 Dr STD Crew Cab SB HD

Question type: General

I live in the U.S. it has the 4L80E trans and flat road driving.

1 Answer
50,715

John answered 10 years ago

It depends on the gear ratio of the rear end. Put the transmission in tow mode and see what the RPMs are at 55 mph. Take it out of tow mode and now see if the RPMs have dropped. If the RPMs have not dropped, that may be the problem. Since 55 mph is around the normal highway driving speed, I would guess the engine should be turning at or near the 1800 to 2200 RPM range. The 70s trucks would turn around 3000 to 3500 RPM range due to the rear end and transmission gearing.

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

Shortcuts

Search Chevrolet Silverado 2500HD Questions

CarGurus Experts

  • #1
    GuruXPQGJ
    Reputation
    1,430
  • #2
    Reelin68
    Reputation
    1,190
  • #3
    Steven Loeffler
    Reputation
    1,150
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used GMC Sierra 2500HD
37 Great Deals out of 2,192 listings starting at $8,490
Used Chevrolet Silverado 1500
212 Great Deals out of 8,092 listings starting at $6,995
Used Ford F-250 Super Duty
25 Great Deals out of 788 listings starting at $3,590
Used Dodge RAM 2500
28 listings starting at $9,900
Used GMC Sierra 1500
140 Great Deals out of 8,304 listings starting at $5,500
Used Ford F-150
318 Great Deals out of 13,660 listings starting at $3,800
Used Ford F-350 Super Duty
53 Great Deals out of 1,476 listings starting at $7,103
Used Toyota Tundra
30 Great Deals out of 978 listings starting at $9,992
Used Chevrolet Silverado 3500
6 listings
Used Chevrolet Tahoe
12 Great Deals out of 847 listings starting at $9,980

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.