my 2000 gmc sierra runs good and has no problems in the city. The Only problem it has is when it gets on the highway, it will only go up to 60mph and 65 would be forcing it .. What might it be ???

Asked by Mar 14, 2015 at 09:03 AM about the 1999 GMC Sierra 1500

Question type: Maintenance & Repair

7 Answers

90,825

What are the RPM's at 60?

1 out of 1 people think this is helpful.

4Rpm

90,825

If that is 4000 RPM then, either you have lost top gear with the overdrive in the tranny or you have some really low gears in the final drive.

10,990

I think rpm @60 should be around 2100 ish.

Its whenever im accelerating to 60mph that it starts to feel like its being forced but it only does it every so often ,not all the time

90,825

Still could be a tranny problem due to the fact the RPM's are so high at cruse of 60 MPH. My Yukon only turns 1850 RPM at 70 MPH.

Best Answer

I guess ill have to get the tranny checked out then , thanks so much for the help .

Your Answer

Add photo

Related Questions

  • 1994 GMC 4l60e transmission shifting problems 29 answers

    I've got a 1994 GMC Sierra 4X4 5.7 I purchased from an older couple. It has been sitting a year. She said years ago they had tranny trouble; it would stay in low. She took it to a shop where she said ...

    1994 GMC Sierra 1500 C1500 SLT Extended Cab LB

    -

    Maintenance & Repair

  • Truck won't start 42 answers

    Recently I have experienced starting issues. One minute it starts and runs great, next time I try to start it it turns over but won't start. Let sit for awhile, turn key, won't start, turn key off...

    1988 GMC Sierra 1500 C1500 Standard Cab SB

    -

    Maintenance & Repair

  • How to correct extreme idle speed on 1987 GMC R1500 with HEI and 5.0L engine? 6 answers

    Been doing this for over 35 years, never had this problem before. Got truck cheap, No maintain history. Idles about 2000rpm. Have check for vacuum leaks, stalls when air is blocked. Base timing correc...

    1988 GMC Sierra 1500 C1500 Standard Cab LB

    -

    Maintenance & Repair

  • rough idle, stalling, loss of power. 228 answers

    o2 sensor code 44 (lean) Replaced: coolant temp sensor, tps, map sensor, fuel filter, and o2 sensor. It will run normal on occasion but only lasts about 45 seconds or so. I don't think its the torqu...

    1995 GMC Sierra 1500 K1500 SL 4WD Extended Cab Stepside SB

    -

    Maintenance & Repair

  • Back pressure 3 answers

    back pressure- i wnat to get headers for my 1993 sierra 350 but i dont understand the back pressure thing do i need back pressure or not im not running catylitic converters only glasspacks will adding...

    1993 GMC Sierra 1500

    -

    Car Customization

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 66,977 nationwide Sierra 1500 listings starting at $1,499.

ZIP:

Search GMC Sierra 1500 Questions

GMC Sierra 1500 Experts

#1 dragonflyoffshore
dragonflyoffshore
Reputation 4,930
#2 John Saffrahn
John Saffrahn
Reputation 3,490
#3 Glenn Clingenpeel
Glenn Clingenpeel
Reputation 3,070
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,747 Great Deals out of 169,779 listings starting at $1,800
Used Ford F-150
2,253 Great Deals out of 209,122 listings starting at $1,499
Used Toyota Tundra
481 Great Deals out of 34,041 listings starting at $3,000
Used Dodge Ram 1500
447 Great Deals out of 11,384 listings starting at $700
Used Toyota Tacoma
520 Great Deals out of 39,818 listings starting at $1,995
Used GMC Yukon
356 Great Deals out of 17,256 listings starting at $2,500
Used Chevrolet Tahoe
576 Great Deals out of 27,602 listings starting at $1,500
Used Ford F-250 Super Duty
337 Great Deals out of 47,638 listings starting at $1,795
Used Chevrolet Camaro
149 Great Deals out of 32,790 listings starting at $1,995
Used GMC Sierra 2500
161 listings starting at $4,995

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
38 Great Deals out of 42,115 listings starting at $20,121
2016 GMC Sierra 1500 For Sale
87 Great Deals out of 3,791 listings starting at $18,200
2015 GMC Sierra 1500 For Sale
99 Great Deals out of 3,917 listings starting at $15,400
2014 GMC Sierra 1500 For Sale
109 Great Deals out of 4,282 listings starting at $14,495
2013 GMC Sierra 1500 For Sale
62 Great Deals out of 2,113 listings starting at $9,260