2005 trailblazer Ext I4 tcc - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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  #1  
Old 05-21-2019, 12:26 PM
greg1290's Avatar
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2005 Chevy TrailBlazer LT EXT
Summit White 4.2L I6 2WD
Join Date: May 2019
Location: Tennessee
Posts: 8
2005 trailblazer Ext I4 tcc

Hi every one just wanted to take a second to say hello
Iím new to the group and glad I found this site.
I do have a question on completely doing away with the tcc lockup Iím having a lot of slip on the lockup in 4th pretty sure itís the bore in the valve body but i donít have the money right now to get into a shop and get the work done to get it fixed right is there a way to disable/delete the tcc lockup without dropping the pan and buying additional parts?
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  #2  
Old 05-21-2019, 12:37 PM
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2004 GMC Envoy SLT
Graphite Metallic 4.2L I6 4X4
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Put the shifter in "3" instead of "D", that will prevent it from going into 4th.
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  #3  
Old 05-21-2019, 01:37 PM
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2005 Chevy TrailBlazer LT EXT
Summit White 4.2L I6 2WD
Join Date: May 2019
Location: Tennessee
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I tried that it did keep it from happening but I have a 30 mile one way interstate drive to work and 30 miles of interstate back home and rpms are sky high going 70-75 mph interstate speeds in 3rd gear, I had the transmission rebuilt in February and did great for like a month now I got the lock up issue and the guy that rebuilt it don’t want to go through with the warranty he keeps saying “oh it’s the injectors or something not the transmission” when the injectors are brand new because I was gullible enough to believe him the 1st time he blamed it on that and I went and bought new injectors. I knew it was a tc lockup problem when it locks and unlocks back and forth right after another I ever so slightly tap the brake pedal when it’s doing it the tc will unlock and and drive perfect for a a few seconds till it wants to lock back up and then it’s a repetitive process for 30 miles of jumping and rpms up and down up and down.
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Old 05-22-2019, 07:18 AM
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2005 Chevy TrailBlazer LT EXT
Summit White 4.2L I6 2WD
Join Date: May 2019
Location: Tennessee
Posts: 8
This morning on the interstate was acting same as usual but decided to pull over and put the obd2 code reader in just to see if any codes were pending (because check engine light still has not came on for this since around March when this issue started happening) Sure enough it said pending code P0894 transmission component slipping
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  #5  
Old 05-23-2019, 06:30 PM
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2004 Chevy TrailBlazer LS EXT
Summit White 4.2L I6 4X4
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Location: Lincoln, Ne.
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Sounds like your attorney needs to send him a letter reminding Mr. Mechanic he does have certain legal obligations here.
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  #6  
Old 05-24-2019, 05:04 AM
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2005 Chevy TrailBlazer LT EXT
Summit White 4.2L I6 2WD
Join Date: May 2019
Location: Tennessee
Posts: 8
I took the trailblazer back to him yesterday and dropped it off I really hope this time it gets fixed right I canít afford to do this all over again somewhere else if only I would have known what I would be going through with this guy I would have went somewhere else I guess this is how we find out the good ones and the bad ones
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  #7  
Old 05-25-2019, 06:14 PM
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2003 Chevy TrailBlazer LT EXT
Dark Green Metallic 4.2L I6 4X4
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I believe you will find that all Trailblazers have the 4L60E transmission. This is a 4 speed transmission not a 3 speed with lock up converter.

So, going back to the rebuilder for warranty repair is the correct thing to do. Hopefully he makes it right for you

https://en.wikipedia.org/wiki/GM_4L60-E_transmission
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  #8  
Old 05-26-2019, 09:28 AM
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2005 Chevy TrailBlazer LT EXT
Summit White 4.2L I6 2WD
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He said it will be Tuesday before he can look at it because they are off for Memorial Day so letís hope he really does get the issue fixed this time Iíll update as soo. As I hear some thing back Tuesday
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Old 05-31-2019, 04:22 PM
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2005 Chevy TrailBlazer LT EXT
Summit White 4.2L I6 2WD
Join Date: May 2019
Location: Tennessee
Posts: 8
I picked up the trailblazer today from the shop he said the torque converter was destroyed and it now has fresh fluids filter and a new torque converter clutch packs where still good, so I leave the shop and it took off and shifted through the gears smooth as silk and then the problem came back just as it was before I brought it to him the lock up slipping again lock unlock lock unlock back and forth still I was told by a guy at work today that’s it the bore in the valve body for the tcc lockup switch can I just snip the wire from the pcm and not have lock up at all other than that’s its a perfect transmission
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