How do I...remove transmission bolts? - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum

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Old 07-25-2010, 02:34 AM
robman242006's Avatar
robman242006 robman242006 is offline
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2003 GMC Envoy SLE
Black 4.2L I6 4X4
Join Date: Jul 2010
Location: Gaines MI
Posts: 5
How do I...remove transmission bolts?

how can I get to the top two trans bolts in my 03 Envoy SLE 4200 I6, got all the rest out just need to know how to get on the two at the very top
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Old 07-25-2010, 09:50 AM
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Robert1101 Robert1101 is offline
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2003 Chevy TrailBlazer LS
Majestic Red Metallic 4.2L I6 4X4
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Posts: 1,708
I have not done a tb but normally you remove the cross member, trans mount, lower the back of the tranny, support the engine and get a bunch of extentsions with a universal at the socket end and go for it.. (Do not forget to disconnect the exahust)
Earth first, we will strip mine the other planets later 3.73's, G80, 4X4, PCMforLess, Flowmaster 70, K&N 57
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Old 07-25-2010, 12:35 PM
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2008 Chevy TrailBlazer LT
Pewter Metallic 4.2L I6 4X4
Join Date: Oct 2009
Location: Pasadena TX
Posts: 37
I had to take off the intake, and valve cover to get to those two bolts, there's a heater hose back there on an aluminum bracket too that gets in the way.
You may be able to bend a wrench to fit in the tight place but I haven't tried it,
The other bolts you can use extensions like the previous poster mentioned,
Good Luck!
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Old 08-08-2010, 04:21 PM
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InvalidUsername InvalidUsername is offline
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2002 Olds Bravada
Pewter Metallic 4.2L I6 AWD
Join Date: Aug 2010
Location: Canada
Posts: 23
I just did an engine R&R on a 2002 Bravada (4.2L) and was able to get them loose by using a 15mm box end wrench and then using a second box end wrench in the opening of the 15mm one as a leverage can be done without bending a wrench but requires MAJOR patience and brute strength...the heater hose has two tabs that point straight back..I made sure to bend those 90 degrees (sideways) before re-install to make it much easier to replace the bolts...then bent them back the right way after the bolts were tight as I could put them...a bent wrench (just bend a cheap one) works great for the side bolts and for quickly getting the top ones in but sucks for tightening

I also recommend running the bolts in the holes with wd-40 before reinstall to make it much easier to tighten them and get them in with just your fingers

I had the intake off but left the valve cover on
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