What did you do to your NBS GMT800 Tahoe/Yukon Today?

[blueinkd]

Trucool 40k install today! I was supposed to be doing the rear brakes as well, but I’m waiting on the powder coated calipers anyway, so a couple more weeks will be fine.

I bought the factory trans cooler lines, and we followed the instructions found here, and on another site I probably shouldn’t mention here. Worked like a charm! My temps were too high for cool weather and no load on the trans. After looking in more detail at the trans information on the Tech2, finding no slips recorded, and the shift times rather reasonable, with 212k on it.. I decided I’d rather try to keep this trans going longer, so cooling it off is key.









I also installed some heat shield I bought from Summit on the lines near the trans side, since they’re really close to the headers. This is probably most of the reason I had temps too high for my liking. And of course I forgot to snap a pic of that.. it’s this stuff: https://www.summitracing.com/parts/vpe-25832

After driving around for about 15 minutes, I couldn’t get the temp over about 110° [emoji1787] guess it’s working well!! Looking forward to seeing where it goes in the heat of the summer.

Need more info on this, parts list, etc. Besides the obvious temp reduction n trans longevity anything else to gain?? I don't tow or anything like that.

 

[Rocket Man]

Trucool 40k install today! I was supposed to be doing the rear brakes as well, but I’m waiting on the powder coated calipers anyway, so a couple more weeks will be fine.

I bought the factory trans cooler lines, and we followed the instructions found here, and on another site I probably shouldn’t mention here. Worked like a charm! My temps were too high for cool weather and no load on the trans. After looking in more detail at the trans information on the Tech2, finding no slips recorded, and the shift times rather reasonable, with 212k on it.. I decided I’d rather try to keep this trans going longer, so cooling it off is key.









I also installed some heat shield I bought from Summit on the lines near the trans side, since they’re really close to the headers. This is probably most of the reason I had temps too high for my liking. And of course I forgot to snap a pic of that.. it’s this stuff: https://www.summitracing.com/parts/vpe-25832

After driving around for about 15 minutes, I couldn’t get the temp over about 110° [emoji1787] guess it’s working well!! Looking forward to seeing where it goes in the heat of the summer.

Wish I could fit the 40k since you can plumb it with AN fittings and then go with braided lines but all I could fit was the 32k behind the lower grill opening because intercooler.

 

[Sam Harris]

Wish I could fit the 40k since you can plumb it with AN fittings and then go with braided lines but all I could fit was the 32k behind the lower grill opening because intercooler.

 

[mattbta]

R&R left rear window motor and guide, also installed those 02 wipers. The drivers side could hit the hood when folded back but you just have to install the wiper arm higher (or high enough) when it's in parked position. For me the most troublesome wiper was the passenger when I wanted to clean it with a squeegee, so this "upgrade" is nice.

One thing I noticed is the biggest difference between passenger and drivers arms is the driver has 2 spray nozzles vs the passenger and they are slightly different bend at the end. I wonder if anyone has tried using driver side arms for both for more increased wiper fluid output, or if it is worth it?

If you have the original windshield, you can use this mark to line the wiper up for "parked position". Mine are right at the top of the line.



Taken from https://www.dieselplace.com/threads/tahoe-wiper-arms-on-my-sierra-hd.41261/post-665558

 

[latvius]

If you have the original windshield, you can use this mark to line the wiper up for "parked position". Mine are right at the top of the line.



Taken from https://www.dieselplace.com/threads/tahoe-wiper-arms-on-my-sierra-hd.41261/post-665558

So that mark is actually on the windshield?

 

[mattbta]

So that mark is actually on the windshield?

If it is an original, yes. Forgive the dirt but it actually highlights where to place them...this is mine from the garage right now.

 

[Rocket Man]

If it is an original, yes. Forgive the dirt but it actually highlights where to place them...this is mine from the garage right now.
View attachment 277328

Interesting.

 

[Fless]

If it is an original, yes. Forgive the dirt but it actually highlights where to place them...this is mine from the garage right now.
View attachment 277328

My Safelite replacement windshield has the marks, too.

 

[Sam Harris]

If it is an original, yes. Forgive the dirt but it actually highlights where to place them...this is mine from the garage right now.
View attachment 277328

Mine has this as well, and it’s a replacement. I think pretty much all of the decent quality windshields have it

 

[Sam Harris]

Need more info on this, parts list, etc. Besides the obvious temp reduction n trans longevity anything else to gain?? I don't tow or anything like that.

Here are the parts I purchased. I bought the cooler on EBay, it was about $50 less than Amazon:

ACDelco 15809053 GM Original... https://www.amazon.com/dp/B0016IT9HU?ref=ppx_pop_mob_ap_share


ACDelco 15809058 GM Original... https://www.amazon.com/dp/B0016IV8R4?ref=ppx_pop_mob_ap_share

Tru-Cool Max LPD4739 4739 40,000 GVW Low Pressure Drop Transmission Oil Cooler with Thermal Bypass https://smile.amazon.com/dp/B00803CTDA/ref=cm_sw_r_cp_api_glt_fabc_36F4PYWVBSS800B1BV1B

Depending on where you live, you don’t necessarily need this model with the bypass valve. In fact I bought this model, but currently, do not have the valve installed. Since the line still goes through the radiator, that will warm the trans fluid a bit. I also always park in the garage, and warm up in the cold weather with the remote start. I do plan to install it eventually, but did not want to add a bunch more rubber lines for that yet. Making sure she’s all good, with no leaks in the hard lines. So far looking great.

Here’s the Trucool without the bypass: https://www.ebay.com/itm/Tru-Cool-L...-/253795617822?_trksid=p2349624.m46890.l49286

(Need to shop around a bit for better prices)

Guide:

http://www.eadperformance.com/trans cooler/Tru Cool Install Guide.doc

Here’s a link to the bracket / kit, and some instructions:
https://www.performancetrucks.net/f...nstall-kit-brackets-fittings-hardware-508374/

Also, I did not have a factory cooler. If you do, don’t necessarily need to buy any trans lines. The long one would already be there I believe, and the short one requires you to cut it, and rotate 180°, due to the additional width of the Trucool, compared with the factory cooler.