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

Asked by Jan 02, 2014 at 04:24 PM about the 2003 Chevrolet Silverado 2500HD 4 Dr STD Crew Cab SB HD

Question type: General

6 Answers

okay...which transmission and what country? hills? lots o braking...like flagstaff to phoenix?

rely on the automatic transmission for when we should "kick-down"...if climbin' a hill and passing a guy too, you could select the next selector down 5speed...select4 etc...bringing the rpm's up....if you're downshifting with a load probably would rather a manual transmission....I'd say 34,000 rpm to answer your question~

11,425

My God, Roy, this is not a jet engine. 34,000 RPMs? Did your fat fingers touch the 4 and 3 at the same time?

11,425

This is my answer on your other entry: 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.

2 out of 2 people think this is helpful.

you're right carson forgot the dash 3-4000 but you nailed this already...nuff said~

1,865

ouch! agree with Carson 1000% on all...

Your Answer

Add photo

Related Questions

Silverado 2500HD

Looking for a Used Silverado 2500HD in your area?

CarGurus has 28,807 nationwide Silverado 2500HD listings starting at $2,295.

ZIP:

Search Chevrolet Silverado 2500HD Questions

Chevrolet Silverado 2500HD Experts

#1 Steven Loeffler
Steven Loeffler
Reputation 420
#2 FordNut
FordNut
Reputation 280
#3 Tom Demyan
Tom Demyan
Reputation 260
View All

Related Models For Sale

Used GMC Sierra 2500HD
140 Great Deals out of 13,629 listings starting at $1,500
Used Ford F-250 Super Duty
451 Great Deals out of 43,257 listings starting at $2,995
Used Chevrolet Silverado 1500
2,751 Great Deals out of 150,216 listings starting at $1,259
Used Dodge Ram 2500
179 Great Deals out of 5,708 listings starting at $2,900
Used Chevrolet Silverado 2500
6 Great Deals out of 267 listings starting at $4,200
Used GMC Sierra 1500
1,195 Great Deals out of 58,871 listings starting at $2,495
Used Ford F-350 Super Duty
480 Great Deals out of 27,169 listings starting at $2,999
Used Ford F-150
3,475 Great Deals out of 207,573 listings starting at $1,273
Used Chevrolet Silverado 1500HD
17 Great Deals out of 293 listings starting at $4,938
Used Toyota Tundra
699 Great Deals out of 28,803 listings starting at $2,500
Used Chevrolet Silverado 3500
26 Great Deals out of 632 listings starting at $6,200

Used Cars For Sale

2017 Chevrolet Silverado 2500HD For Sale
3,096 listings starting at $27,425
2016 Chevrolet Silverado 2500HD For Sale
45 Great Deals out of 14,979 listings starting at $24,658
2015 Chevrolet Silverado 2500HD For Sale
63 Great Deals out of 2,127 listings starting at $19,995
2014 Chevrolet Silverado 2500HD For Sale
6 Great Deals out of 640 listings starting at $14,990
2013 Chevrolet Silverado 2500HD For Sale
11 Great Deals out of 1,122 listings starting at $8,905