« previous next »
Pages: [1]   Go Down

Author Topic: TH400 - Need advice  (Read 10164 times)

Offline Dr_Snooz

  • Junior Member
  • ***
  • Posts: 684
  • "I like to take hammers, and just break stuff"
TH400 - Need advice
« on: June 20, 2024, 08:39:39 am »
I'm still relatively new to American cars, so bear with me. I've been deal with a lot of trans leaks lately, including a pretty bad one coming from an age-hardened front pump seal.

My question is, with all these seals on the outside failing, will internal seals start failing next? Does that happen? Should I be preparing for major transmission work in my near future? The thing operates fine; just leaks a lot.
Logged
1989 Chevy Suburban V-2500, 5.7L, TH400

1990 Chevy C-3500 Ext. Cab, 7.4L, 3L80

2009 Chevy Silverado 1500 WT 4WD, 4.8L, 4L60

Offline Captkaos

  • OWNER and Administrator
  • Administrator
  • Senior Member
  • *****
  • Posts: 18454
    • http://www.73-87chevytrucks.com
Re: TH400 - Need advice
« Reply #1 on: June 20, 2024, 11:19:58 am »
If it is just the pump seal you can pull and replace it.  I think TH400 pump seal kits are less than $50.
Logged

Offline Dr_Snooz

  • Junior Member
  • ***
  • Posts: 684
  • "I like to take hammers, and just break stuff"
Re: TH400 - Need advice
« Reply #2 on: June 20, 2024, 08:39:24 pm »
The leaks are fixed now. I'm just worried that they are signs of worse to come.
Logged
1989 Chevy Suburban V-2500, 5.7L, TH400

1990 Chevy C-3500 Ext. Cab, 7.4L, 3L80

2009 Chevy Silverado 1500 WT 4WD, 4.8L, 4L60
Pages: [1]   Go Up
« previous next »