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

76,265

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

10

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

1 people found this helpful.
76,265

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 60,062 nationwide Sierra 1500 listings starting at $1,500.

ZIP:

GMC Sierra 1500 Experts

  • #1
    dragonflyoffshore
    Reputation
    5,600
  • #2
    John Saffrahn
    Reputation
    3,920
  • #3
    Glenn Clingenpeel
    Reputation
    3,730
View All

Related Models For Sale

Used Ford F-150
2,283 Great Deals out of 198,756 listings starting at $1,300
Used GMC Yukon
340 Great Deals out of 21,944 listings starting at $2,950
Used Chevrolet Camaro
242 Great Deals out of 26,852 listings starting at $4,000
Used Ford Mustang
310 Great Deals out of 39,695 listings starting at $1,312

Used Cars For Sale

2018 GMC Sierra 1500 For Sale
62 Great Deals out of 34,405 listings starting at $20,490
2017 GMC Sierra 1500 For Sale
120 Great Deals out of 5,474 listings starting at $18,488
2016 GMC Sierra 1500 For Sale
58 Great Deals out of 2,747 listings starting at $16,700
2015 GMC Sierra 1500 For Sale
79 Great Deals out of 4,625 listings starting at $11,990
2014 GMC Sierra 1500 For Sale
62 Great Deals out of 2,772 listings starting at $10,900

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.