Offroad Trailblazers and Envoys

Can someone give me some info on mirrors?

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

by Turbodreams » Thu Jul 07, 2016 4:37 pm

Im hoping to swap out my stock LS side mirrors with the LT mirrors with the signals and heating. Id also like to swap my rearview with the temp/compass version.

Are these swaps possible without any extra wiring?

Thanks in advance!
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by Rickalicka18 » Thu Jul 07, 2016 6:47 pm

Mirrors are a direct swap. You just turn on the rear window defroster for to turn the heater on for the mirror, and the blinker connection is already in your harness. And I don't know about the rear view mirror, but it might be plug and play too
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by Turbodreams » Fri Jul 08, 2016 8:08 am

Rickalicka18 wrote:Mirrors are a direct swap. You just turn on the rear window defroster for to turn the heater on for the mirror, and the blinker connection is already in your harness. And I don't know about the rear view mirror, but it might be plug and play too


Awesome. Thanks!

Now does anyone know about the rearview?
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by KingBird » Fri Jul 08, 2016 7:51 pm

The wire/plug for the rearview is probably laying on top of your headliner. Chevy did this with the Silverados of that era. I doubt they had a specific wiring harness that omitted it in the Trailblazer.
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by v7guy » Sat Jul 09, 2016 1:07 am

Typically there was just one wiring harness for vehicles and GM hooked things up as applicable for that order. You'll sometimes see different harnesses say when there was a manual trans option. But that's about it. GM has been doing this since at least the 90s
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by Turbodreams » Sat Jul 09, 2016 7:04 am

Awesome. Thanks for the info everyone.
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by larryk » Mon Jul 11, 2016 7:44 pm

I can guarantee you that the wiring is not there. I added the temp/compass mirror, and had to wire it up. You have to also add the temp sensor to the front of the radiator support and run the wire for that

I know in the old days, wires were there for missing accessories. On these trucks though, literally every option you want to add includes running wiring and fuses. Pita
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by Turbodreams » Tue Jul 12, 2016 9:32 am

larryk wrote:I can guarantee you that the wiring is not there. I added the temp/compass mirror, and had to wire it up. You have to also add the temp sensor to the front of the radiator support and run the wire for that

I know in the old days, wires were there for missing accessories. On these trucks though, literally every option you want to add includes running wiring and fuses. Pita


Well shit, I guess Ill double check that before buying a mirror.
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