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So I went ahead and purchased the "updated" thermostatic valve for my 6L80e, part number 86774933 referenced in the SB. installation look about 10 min and only required a 10mm and 13mm open end. I do my trans fluid and filter every 22,500 as per the service manual and my fluid temp would hover around 185-195 towing or not towing hot outside or cold. As i live in CT the ambient air temp can be 10 degrees or 90. After the installation of the new bypass valve the trans sits at 145 and never got over 150 on a 2 hour 116mile drive. I also think this is much better than the "pill flip" as you retain the bypass ability for colder weather so the trans still gets up to temp quickly. I have not yet towed anything to see if the temp would go back up to the 180-190 range but I figured I would share this info for anyone else who thinks a transmission designed to run at 192 degrees is crazy.
Also for anyone who wants one and doesn't wanna pay if your truck is still under warranty the dealer will install one of these if you complain about anything with the transmission even if the "Customer complaint Cannot be replicated." that being said i got mine for $60 on GMpartsDirect.
By Anthony Trujillo
Hello, my airbag service light came on last week and I thought it was due to the recall that is on this model. I had the recall fixed and the light is still on. Plus my power seat and passenger windows won't work. I checked all of the fuses and modules with no luck. Has anyone else had this issue and if so what was wrong. Thank you!
Rear humming noise when I accelerate. Dealer first said it was the tires then the bearing and now they say I need a whole rear diff.By Andy G
The truck drives fine. It accelerates fine and everything, except there has been a humming noise coming from the rear when I accelerate recently. It gets louder the faster I go. The dealer seemed to not know what it was a first and gave me different possible issues. Now they’re telling me I need a rear differential replacement. I do have larger wheels and tires (35s) on a 6 in lift. Have any of you experienced something similar?
This post was about preventing rust on fenders. I did not get much response so will be reposting in another thread.
My 2016 Silverado 5.3 with 50k miles has always made a sound After kicking over and I finally was able to leave it at the dealer because they said they need to replicate the noise. It very loud when the weather is very cold and only does it at cold start and goes away once started. Attached is a video hoping someone can help because I feel like the dealer is really going to stick it to me.
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