2002 Trailblazer transmission do i need to worry? - Page 3 - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 Vortec 4.2L I-6 Engine and Drivetrain > Transmission Mods

Transmission Mods Performance Transmission Modifications

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  #21  
Old 04-24-2019, 11:05 PM
rayhitchcock rayhitchcock is offline
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2007 GMC Envoy SLE
Bordeaux Red Metallic 4.2L I6 2WD
Join Date: Jul 2010
Location: Helena, AL
Posts: 3
I had the same exact TB and loved it, but dk blue. The tranny went out at 250,000 but I feel I could have extended it some. So now I'm running an Envoy now at 200,000. In the hopes of extending its life, I change all the fluids to full synthetic. I guess time will tell.
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  #22  
Old 04-25-2019, 08:46 PM
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sky_blazer02 sky_blazer02 is offline
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2002 Chevy TrailBlazer LTZ
Black Granite Metallic 4.2L I6 4X4
Join Date: Apr 2019
Location: Michigan
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i got another call from him today telling me the lower ball joints were bad since a set of Moog lower control arms were included when i purchased the vehicle i just gave them to him to put on. i probably could have done it myself but with recently moving and losing my garage, having to do this in my driveway while it has been raining past couple days didnt really appeal to me. i have been busy anyway taking care of my fathers final affairs im too busy to do it.

he did say when he drained the transmission fluid it was dark but no clutch buildup inside. the vehicle is shifting better now but i still get to 60MPH and shes still shifting must just be how she is
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  #23  
Old 04-25-2019, 08:53 PM
miketexas miketexas is offline
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2003 Chevy TrailBlazer LS
Black 4.2L I6 2WD
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Quote:
Originally Posted by sky_blazer02 View Post
i got another call from him today telling me the lower ball joints were bad since a set of Moog lower control arms were included when i purchased the vehicle i just gave them to him to put on. i probably could have done it myself but with recently moving and losing my garage, having to do this in my driveway while it has been raining past couple days didnt really appeal to me. i have been busy anyway taking care of my fathers final affairs im too busy to do it.

he did say when he drained the transmission fluid it was dark but no clutch buildup inside. the vehicle is shifting better now but i still get to 60MPH and shes still shifting must just be how she is
To know if it's working as it should, depending on the rear ratio at 70 mph rpm should be a little below 2000 RPM, or real close to 2000.
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  #24  
Old 04-28-2019, 01:48 PM
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sky_blazer02 sky_blazer02 is offline
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2002 Chevy TrailBlazer LTZ
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Quote:
Originally Posted by miketexas View Post
To know if it's working as it should, depending on the rear ratio at 70 mph rpm should be a little below 2000 RPM, or real close to 2000.
drove her to work today. at 60MPH im at 1800 RPM
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  #25  
Old 05-01-2019, 07:02 PM
RPatton76 RPatton76 is offline
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2008 Chevy TrailBlazer LT
Imperial Blue Metallic 4.2L I6 2WD
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I don't know if you have anything connected to the trailer harness plug, but I found out these have an "automatic tow/haul mode" when it detects the trailer being hooked up, it has later shifts, like it does when cold. I didn't see that anyone mentioned this, but I noticed when I added a 4th brake light to my receiver hitch and I didn't like the extra revs all the time due to tow/haul mode, so I don't use the light now, unfortunately. I might try to hard wire it in parallel with the 3rd brake light so it won't be powered by the trailer harness. it sounds like yours might be geared like my 4.2L version w/ 2WD and 3.42 gears.

Rob in AZ <---- looking to change my gears or rear to 4.10 gears for better towing
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  #26  
Old 05-05-2019, 02:57 PM
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sky_blazer02 sky_blazer02 is offline
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2002 Chevy TrailBlazer LTZ
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this is my RPM at 70
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  #27  
Old 05-05-2019, 03:24 PM
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flyboy2610 flyboy2610 is offline
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2004 Chevy TrailBlazer LS EXT
Summit White 4.2L I6 4X4
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Looks like it's right where Mike said it should be!
I see your temp gauge is just a whisker over 200. That's where mine is as well. The wife's '06 TB is just over 180.
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  #28  
Old 05-06-2019, 05:48 PM
miketexas miketexas is offline
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2003 Chevy TrailBlazer LS
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Quote:
Originally Posted by sky_blazer02 View Post
this is my RPM at 70
Lookin' good!
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