1991 GMC 2wd transmission won't go into gear

10

Asked by Feb 19, 2016 at 10:31 PM about the 1991 GMC Sierra 1500 C1500 Standard Cab LB

Question type: Maintenance & Repair

Recently I bought a 91 seirra GMC. The kid says it had a new transmission put into it recently that has a shift kit for towing, thus causing it to shift hard. drove it for like a week with no problems. I did notice the more I drove,  the easier it shifted, before I'd have to reach a certain speed to make it shift and it would shift reply hard from first to second. Past few days, noe of that. On my way back I let off the gas it was coasting, the check engine light came on, hit the gas again and it only revs. Its parked on a level ground. Checked the fluid with the engine running and it's good. now while in reverse or drive it makes a funny, off beat sound. Muck like a bb in a soda can. But it does not go into gear and only revs up,  no movement. The kid said it had the granny it was supposed to have stock... A 400 rs..... ( stock is most likely a 4l60e or possibly a 4l80e ) th400 is the closest match I can find to this alleged 400rs tranny the kid told me about. Has a new drive shaft and u-joint. Also a 2wd. Any answers PLEASE!

4 Answers

69,575

One question??Does the fluid smell burnt/or dark?

10

Doesn't appear dark but I thought I caught a wiff of something.

1 of 1 people found this helpful.
69,575

If you smell burnt fluid you may have bad bands in tranny,the hard shifting is a indacator of burnt bands.

Best Answer Mark helpful
10

Thank you. How would I go about checking that? And are the a pain in the ass and/or expensive?

Your Answer

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 65,446 nationwide Sierra 1500 listings starting at $1,995.

ZIP:

GMC Sierra 1500 Experts

  • #1
    dragonflyoffshore
    Reputation
    5,450
  • #2
    John Saffrahn
    Reputation
    3,760
  • #3
    Glenn Clingenpeel
    Reputation
    3,450
View All

Related Models For Sale

Used Ford F-150
2,775 Great Deals out of 211,590 listings starting at $1,400
Used GMC Yukon
579 Great Deals out of 22,417 listings starting at $1,995
Used Chevrolet Camaro
441 Great Deals out of 31,343 listings starting at $3,550

Used Cars For Sale

2018 GMC Sierra 1500 For Sale
22,763 listings starting at $22,858
2017 GMC Sierra 1500 For Sale
111 Great Deals out of 15,707 listings starting at $22,236
2016 GMC Sierra 1500 For Sale
148 Great Deals out of 4,045 listings starting at $16,988
2015 GMC Sierra 1500 For Sale
177 Great Deals out of 5,429 listings starting at $14,990
2014 GMC Sierra 1500 For Sale
218 Great Deals out of 5,070 listings starting at $10,995

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.