Code 628 "Slipping TC"
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Freshman User
Joined: Apr 2004
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From: Borrego Springs, Ca.
Code 628 "Slipping TC"
Search isn't working right now, so I thought I'd post this. I have a code 628. Has anyone had any luck changing the atf and filter to solve this code, or do I need a new TC?
Post Fiend
Joined: May 2004
Posts: 11,289
Likes: 6
From: Lakewood, Ohio
you also need to drain torque convertor.
remove rubber plug from case under the tc, you need to tap starter to line up the drain bolt.
use a large drain pan.
also change filter and of course use a good quality atf.
remove rubber plug from case under the tc, you need to tap starter to line up the drain bolt.
use a large drain pan.
also change filter and of course use a good quality atf.
Hotshot
Joined: Jan 2004
Posts: 19,763
Likes: 1,082
From: St Louis
You need to identify what you're working on: Year and which model transmission.
Also, you need to provide a COMPLETE list of observed symptoms.
Steve
Also, you need to provide a COMPLETE list of observed symptoms.
Steve
Last edited by projectSHO89; Jul 26, 2006 at 09:58 AM.
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Freshman User
Joined: Apr 2004
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From: Borrego Springs, Ca.
Originally Posted by projectSHO89
You need to identify what you're working on: Year and which model transmission.
Also, you need to provide a COMPLETE list of observed symptoms.
Steve
Also, you need to provide a COMPLETE list of observed symptoms.
Steve
I have a code 628. The fluid is burned some and when the code is removed, the trans shifts smoothly (no slam shifting), but slips upshifting into 2nd. With the code it slam shifts.
Bill
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Joined: Jun 2006
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If you don't already have $2,000 in the truck repair account, I think you should start saving as quickly as you can. Changing the fluid will slow the rate of damage but it can't repair the damage that has already occurred.
You really only have two long term choices, schedule it for a rebuild or wait until you get the last mile out of it and have to tow it to the shop. It is the price one pays for owning an automatic transmission and not changing the fluid more often than anyone would think one should.
You really only have two long term choices, schedule it for a rebuild or wait until you get the last mile out of it and have to tow it to the shop. It is the price one pays for owning an automatic transmission and not changing the fluid more often than anyone would think one should.