| Author |
 Topic Search  Topic Options
|
Tracy Martin TN 
Orange Level Access
Joined: 11 Sep 2009
Location: Gallatin,TN
Points: 10755
|
 Post Options
 Thanks(0)
 Quote  Reply
 Topic: 99 GMC tranny?
Posted: 13 Sep 2020 at 6:31pm |
|
I think my truck has had a major problem arise. Today it popped and while it is moving tranny sounds like Halloween in Hell! Raised back tires of ground, can spin them with no major noise. Put truck in gear and tranny sounds like broken or missing teeth on gears. What is most likely culprit? Any help appreciated. Tracy
|
|
No greater gift than healthy grandkids!
|
 |
|
Sponsored Links
|
|
|
Walker
Orange Level Access
Joined: 12 Sep 2009
Location: oh
Points: 8922
|
Post Options
Thanks(0)
Quote Reply
Posted: 13 Sep 2020 at 7:45pm |
|
Somebody stuck a tire iron through somebody elses u joint where my daughter worked years ago. Her description sounded a lot like yours.
|
|
Tracy Martin TN
Orange Level Access
Joined: 11 Sep 2009
Location: Gallatin,TN
Points: 10755
|
Post Options
Thanks(0)
Quote Reply
Posted: 13 Sep 2020 at 8:03pm |
|
Pretty sure it is the sun gears. Hope it isn't a too costly fix.
|
|
No greater gift than healthy grandkids!
|
|
Hubert (Ga)engine7
Orange Level
Joined: 12 Sep 2009
Location: Jackson Cnty,GA
Points: 6463
|
Post Options
Thanks(0)
Quote Reply
Posted: 13 Sep 2020 at 8:08pm |
|
You may come out ahead putting a rebuilt unit in instead of trying to fix the old one. Depends on how many miles you have on it and how many more you hope to get out of it.
|
|
Just an old country boy saved by the grace of God.
|
|
Tracy Martin TN
Orange Level Access
Joined: 11 Sep 2009
Location: Gallatin,TN
Points: 10755
|
Post Options
Thanks(0)
Quote Reply
Posted: 13 Sep 2020 at 9:11pm |
|
Hubert, around 250,000 on it. Would like to get several more years out of her if possible. Tracy
|
|
No greater gift than healthy grandkids!
|
|
shameless dude
Orange Level
Joined: 10 Apr 2017
Location: east NE
Points: 13607
|
Post Options
Thanks(0)
Quote Reply
Posted: 13 Sep 2020 at 11:16pm |
|
manual or auto?
|
|
Tracy Martin TN
Orange Level Access
Joined: 11 Sep 2009
Location: Gallatin,TN
Points: 10755
|
Post Options
Thanks(0)
Quote Reply
Posted: 14 Sep 2020 at 8:46am |
|
auto.
|
|
No greater gift than healthy grandkids!
|
|
Boss Man
Orange Level
Joined: 03 Mar 2018
Location: Greenleaf, WI
Points: 617
|
Post Options
Thanks(0)
Quote Reply
Posted: 14 Sep 2020 at 10:12am |
|
Sounds like a bad planetary. I would look for a used low mile replacement.
|
|
Tracy Martin TN
Orange Level Access
Joined: 11 Sep 2009
Location: Gallatin,TN
Points: 10755
|
Post Options
Thanks(0)
Quote Reply
Posted: 14 Sep 2020 at 1:32pm |
|
None to be found. I guess it is getting rebuilt. Tracy
|
|
No greater gift than healthy grandkids!
|
|
Thad in AR.
Orange Level Access
Joined: 12 Sep 2009
Location: Arkansas
Points: 9643
|
Post Options
Thanks(0)
Quote Reply
Posted: 14 Sep 2020 at 1:55pm |
|
Tracy for what it’s worth I drive a 99 GMC also. Had to rebuild the transmission at around the same miles.
That’s been the only major expense on this truck. It’s at 400000 miles now
|
|
Coke-in-MN
Orange Level Access
Joined: 12 Sep 2009
Location: Afton MN
Points: 41973
|
Post Options
Thanks(0)
Quote Reply
Posted: 14 Sep 2020 at 3:05pm |
|
2 wheel or 4 wheel and what transmission ?
I was looking for a transfer case for my 2000 GMC and came across more transmissions
both 4L60 and 4L80 but each has a different output shaft .
As I have a 4L80 finding the right transfer case was a hunt , then finding the right electronic controller unit was another problem - ended up replacing clutches and bearings in mine - cheaper than any rebuild I could find and was a couple hours work once unit was out of vehicle .
|
|
Life lesson: If you’re being chased by a lion, you’re on a horse, to the left of you is a giraffe and on the right is a unicorn, what do you do? You stop drinking and get off the carousel.
|
|
Tracy Martin TN
Orange Level Access
Joined: 11 Sep 2009
Location: Gallatin,TN
Points: 10755
|
Post Options
Thanks(0)
Quote Reply
Posted: 14 Sep 2020 at 10:04pm |
4 wheel drive 4l60. Hope they can get started later part of this week. Been a good truck. Less problems with it than any of the newer ones my friends have. Too much bull  on the newer stuff. Tracy
|
|
No greater gift than healthy grandkids!
|
|
shameless dude
Orange Level
Joined: 10 Apr 2017
Location: east NE
Points: 13607
|
Post Options
Thanks(0)
Quote Reply
Posted: 15 Sep 2020 at 1:54am |
|
that's why i've kept my '97 and '98 too Tracy, plus my back don't hurt driving them. my old lady's....oooops....i mean my loving wifes new burb has leather seats and i can't drive it as long as my pickups with the cloth seats.
|
|
Dirt Farmer
Silver Level Access
Joined: 15 Sep 2020
Location: Illinois
Points: 429
|
Post Options
Thanks(0)
Quote Reply
Posted: 15 Sep 2020 at 3:25am |
|
Greetings everyone, enjoyed this site for many years and can’t let a Chevy truck person down. Sounds like the noise maybe the pesky snap ring on the tail shaft of the transfer case. Jack up and support the rear end to keep fluid from leaking out, remove rear drive shaft, then take off tail shaft housing to reveal a broken snap ring that goes into a groove on shaft to keep the shaft engaged in the sprocket. Learned this the hard way after replacing the chain in the case only to have the noise continue. Replaced the snap ring and problem solved. Hope this helps and saves you time and money. If the truck is still moving then the transmission is doing it’s job.
|
|
