2016 5.3 6 speed weird 4-5 shift question

[nluchau]

Hey friends,  

 

A little history - Been having hard downshifts since day 1 with my 2016 Silverado 5.3 6 speed and I am now at 42k miles.  Dealer has done the following: 

1. Replaced Valve body

2. Replaced transmission under customer satisfaction memo at 34k miles.

3. Reset adapts, reset transmission, etc...

 

I am still getting somewhat hard downshifts when slowing but its better but here's a new issue. Ever since getting the replacement transmission I am noticing the following: 

* Especially when cold I notice when I get to approx 32 mph at a light throttle it will abruptly drop into 5th gear rather hard.  This gets better as it warms up but it still doesn't feel right.  Also if I drive in M4 and in about that same speed I'll tap the + on the gear shifter and it will drop into 5th but what I notice with the RPM's is they will drop, rise and then drop down.  This isn't normal...

 

I brought this concern up to my service manager a couple days after getting the 2nd transmission and he just said to give it 5-6k miles to learn my driving.  We''ll, here we are at 8k miles later and its still doing it and he basically said we've done all we can by replacing the transmission.  

 

Is there anything else I could possibly do to entice them to look at it again?  I have a good rep with the dealer (Not who I purchased it from).  

 

Thanks for any advice.  

 

 

 

[Snowcamo]

Hey friends,  
 
A little history - Been having hard downshifts since day 1 with my 2016 Silverado 5.3 6 speed and I am now at 42k miles.  Dealer has done the following: 
1. Replaced Valve body
2. Replaced transmission under customer satisfaction memo at 34k miles.
3. Reset adapts, reset transmission, etc...
 
I am still getting somewhat hard downshifts when slowing but its better but here's a new issue. Ever since getting the replacement transmission I am noticing the following: 
* Especially when cold I notice when I get to approx 32 mph at a light throttle it will abruptly drop into 5th gear rather hard.  This gets better as it warms up but it still doesn't feel right.  Also if I drive in M4 and in about that same speed I'll tap the + on the gear shifter and it will drop into 5th but what I notice with the RPM's is they will drop, rise and then drop down.  This isn't normal...
 
I brought this concern up to my service manager a couple days after getting the 2nd transmission and he just said to give it 5-6k miles to learn my driving.  We''ll, here we are at 8k miles later and its still doing it and he basically said we've done all we can by replacing the transmission.  
 
Is there anything else I could possibly do to entice them to look at it again?  I have a good rep with the dealer (Not who I purchased it from).  
 
Thanks for any advice.  
 
 
 

The transmission has issues that are addressed with all the new sonnax replacement parts. The only other option is to get it programmed the aftermarket. If Jim can't fix it themselves that leaves you footing the bill later on in life. Better now than then

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