Offroad Trailblazers and Envoys

Rear main seal

Trailblazer and Envoy related, but not off-road related...

by UmphlettWilliams71 » Fri Mar 30, 2018 7:05 pm

Hello everyone, I'm new to off road tb but have visited several times before joining. I'm currently replacing my transmission and want to replace the rear main seal while it's out. Do I need a special tool to replace the seal or can it be done with it. I can't seem to find any dyi or videos on the 4.2l. Some where i read just pull the old seal out and put the new one in, but it doesn't say if it takes a special tool or not. Thanks
UmphlettWilliams71
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Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD w/ G80

by mason10198 » Mon Apr 02, 2018 11:22 am

I did mine with the engine out on a stand. I don't think we used any special tools. Just ripped out the old one and put the new one in. But beware, it will probably come in a plastic container, and that plastic container will be the installation tool. It was pain to try and get it to go on right, so be careful.
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mason10198
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by UmphlettWilliams71 » Mon Apr 02, 2018 7:00 pm

Thanks for the information,very much appreciated. I'm gonna give it a try this week.
UmphlettWilliams71
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Posts: 4
Joined: Fri Mar 30, 2018 6:40 pm
Name: Michael Umphlett
Vehicle Year: 2003
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD w/ G80


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