Transmission service - Warranty

[ZR2Reaper]

Hey! I am curious if there is a recommended transmission service at a mileage interval or if not serviced could it affect warranty claims later down the road for the powertrain? I can't seem to find a recommended transmission service time and the maintenance schedule on the chevy app certainly has not provided any.

 

[Byrds8]

The manual for my 22 1500 says 45K miles for severe. Nothing under normal. I wouldnt go with the nothing though.

 

[ZR2Reaper]

The manual for my 22 1500 says 45K miles for severe. Nothing under normal. I wouldnt go with the nothing though.

Okay, I am reading the manual right as well. Didn't want to neglect if it runs the chance at voiding warranty. Have you noticed when in reverse there is almost like a whirring sound? Never had that on my 2016 Sierra but has been like this since I got the truck and thought it was odd.

 

[NullNomad]

I know the subject is a bit polarizing these days, but my view still applies. Why mess with trannies, if it broke, don't mess with it. leave it alone, go on about your day, no need to crack it open. read into that however you want.

 

[ZR2Reaper]

I know the subject is a bit polarizing these days, but my view still applies. Why mess with trannies, if it broke, don't mess with it. leave it alone, go on about your day, no need to crack it open. read into that however you want.

That was my thoughts when I had my Sierra with the 8L90.. put 200K on it with no issues at all. Never serviced or anything but with these new trucks I wasn't sure if there was anything more to it.

 

[NullNomad]

That was my thoughts when I had my Sierra with the 8L90.. put 200K on it with no issues at all. Never serviced or anything but with these new trucks I wasn't sure if there was anything more to it.

might not be the popular opinion, but in the 30+ years I've owned trucks, I pay WAY more attention to the differential than the transmission. Thats where, in my experience, the problems will show up first then cascade.

 

[Byrds8]

Okay, I am reading the manual right as well. Didn't want to neglect if it runs the chance at voiding warranty. Have you noticed when in reverse there is almost like a whirring sound? Never had that on my 2016 Sierra but has been like this since I got the truck and thought it was odd.

I have not noticed any whirring.

 

[8ball_99]

Personally I would bite the bullet and get it serviced at the dealer at 45k. I'd much rather just do it my self, BUT, GM hasn't had great luck with transmissions here lately. Heck the valve bodies are going out of the Duramax HDs and locking the rear tires up, lol. I had a 22 1500 and now a 24 HD. Both of them had a few weird shifts, ect. Nothing major, But come time, I plan on having mine serviced at the dealer so if it does act up they can't try to weasel out of it.

 

[AXE]

I'm doing mine at 25k. These current transmissions are subject to valve body issues, which in part may be exacerbated by contaminated fluid. Not saying fluid changes will be the end all to transmission issues, but it can't hurt.

The real conundrum is that there is no easy way to do the change since the dipshits at GM forgot to put in a drain plug and a dipstick to make this a 30 minute job. Instead its a pan off and you have to remove the exhaust mid pipes. Also the fluid isn't standard stuff and it costs a lot.

 

[Byrds8]

I know in the past, some places, disconnected the lines and let the vehicle pump out the old and in the new on its on. Is that still not common practice?

 

[Chosenone]

I had the dealer flush my transmission around 30k. Made a difference. Shift smoother. Also had rear differential serviced. Take care of your vehicle it will take care of you. Maintenance is cheap. Pay a little now or a lot more later.