What did you do to your NNBS GMT900 Tahoe/Yukon Today?

[mikez71]

So, you’re saying the wiper arms on thecopcar aren’t standard gmt900 fare?

Looks like you have #1, the early design.
My 2012 has #3..

 

[Doubeleive]

So, you’re saying the wiper arms on thecopcar aren’t standard gmt900 fare?


View attachment 401694

you have the correct ones it calls for. (i think), if you drive thru a car wash does the high speed drying fan makes the wipers lift off the glass?
I poked around a few years I think the 2012 tahoe shows it can use either one (angled or not angled)
is the mounting bolt splined?
this is what ra shows for the 2012 tahoes angled or straighter with a j hook

 

[Doubeleive]

So, you’re saying the wiper arms on thecopcar aren’t standard gmt900 fare?


View attachment 401694

the j hook style go out with less angle and then the jhook part corrects it with a bend so the blades sit right, but I think this gives them less downforce

 

[mikez71]

the j hook style go out with less angle and then the jhook part corrects it with a bend so the blades sit right, but I think this gives them less downforce

Interesting, when i go through carwash dryers, my blade (driver side mainly) floats up about 1-2".

 

[Doubeleive]

Interesting, when i go through carwash dryers, my blade (driver side mainly) floats up about 1-2".

you might also notice if you drive above say 85mph in the rain that a standard wiper blade will start to lift off the glass and not work as well. I have corrected that with 3rd party wiper blades but a firmer wiper arm couldn't hurt as well. I am probably in the 1% bracket that will on occasion drive that fast or faster in the rain. rain is my nemesis. hydroplaning does not always end well.

 

[Sparksalot]

the j hook style go out with less angle and then the jhook part corrects it with a bend so the blades sit right, but I think this gives them less downforce
View attachment 401702

Mine have J hooks as well, but I never realized the entire arm was a different profile.

 

[Sparksalot]

you have the correct ones it calls for. (i think), if you drive thru a car wash does the high speed drying fan makes the wipers lift off the glass?
I poked around a few years I think the 2012 tahoe shows it can use either one (angled or not angled)
is the mounting bolt splined?
this is what ra shows for the 2012 tahoes angled or straighter with a j hook
View attachment 401700

I’ve never taken it through an automatic car wash because of the radio antennas. I’ve also never had the wipers ever try to lift and be less effective at any speed.

 

[Sparksalot]

Mine have J hooks as well, but I never realized the entire arm was a different profile.

By J hooks, I mean the blade attachment.

 

[Sparksalot]

Looks like you have #1, the early design.
My 2012 has #3..

Thecopcar 2011 on the right and theothertwin 2013 on the left. Note this was before the hood swap.

the arms are the same.

 

[89Suburban]

All this wiper arm talk reminds me. I tried to take off my driver's side arm. I took the nut off but the arm is frozen to the stud. I need to find a small puller to grab it off or something.