You are the only person I’ve seen so far that mentions the MAF sensor and the 8L90 shifting harshly. Nobody really talks about it or maybe knows about it. Good on you. Cleaning the MAF sensor is an important component for the 8L90 and 6L80 / 6L90 in having smooth shifts, especially 2-3 and 2-1.
Don't use the auto mode on the 4 wheel drive selector switch. This causes all these problems if it's in auto mode. USE 2 HIGH! NEVER USE AUTO MODE!!!!!!!!!!
My truck recently had both the hard downshifts and stuttering at idle. I bought all new coil packs and it fixed the stuttering. Now I just need to fix the hard shifting
My goodness, Sir. Excellent vid..Quick question, I will check my fluid level but it is hard shifting from starts. My O2 sensor is showing problem after diagnostic. Could this be a problem in hard shifting? 2019 GMC Kodiak Z71 4x4. Thx
there is a difference between an oxygen sensor overheat and a lean or rich bank one or two code, so make sure that it is an oxygen sensor problem and not a vacuum issue but any time unmonitored air gets past the mass air flow sensor it can cause shift concerns and oxygen sensor concerns
My issue is the gear shit on my 2018 Chevy Silverado gets stuck and when I use the telescopic steering button and pull steering wheel back and forth it will shift.
I hace a 2018 with 88k. Chevy wants 500 to flush fluud but they dont change filter. Is there a reason for that? I have always changed my fluuds but there is no diostick on ny 8speed tranny and not sure of procedure. It kind of ramdomly bumos when i stop but changes smooth. Any suggestions? Should I change fluid? One transmission shop even says don’t change it
we change the fluid and filter and also make sure that you have your mass air flow sensor cleaned, I have a video on this and we have corrected several shifting complaints this way
I'm on my 3rd, about to be 4th, thank God it's under warranty. The dealer said the rear eand good, latest transmission failed at just over 500 miles, how much does joints pay in the transmission? I've asked them to replace them both each time, something causing the transmission to fail.
You are the only person I’ve seen so far that mentions the MAF sensor and the 8L90 shifting harshly. Nobody really talks about it or maybe knows about it. Good on you. Cleaning the MAF sensor is an important component for the 8L90 and 6L80 / 6L90 in having smooth shifts, especially 2-3 and 2-1.
Have you tried that method ? Now I’m convinced I should try that before fluid and filter change
Bro, you saved me with the MAFS cleaning advice, I appreciate it big time brother 🤙
I'm glad we could help and thanks for the comment.
Great tips about cleaning the sensor! Thank you.
I've got try 6L80 in my 2014. Harsh downshifts. I'm going to clean the sensor tomorrow!
Did it work ?
Well??
@@domeslacker turned out to be bigger issues. Pump started making noises. Replaced with Jasper.
Don't use the auto mode on the 4 wheel drive selector switch. This causes all these problems if it's in auto mode. USE 2 HIGH! NEVER USE AUTO MODE!!!!!!!!!!
What happens if you’ve used it in the past? The car salesman told me to always keep it in auto. I found fairly quickly to use 2 high.
Idk who you are but you just saved me from a year long headache. This INSTANTLY fixed the issue
This literally fixed my bad shifts. Trusted the dealership when they did the fluid flush but that didn't resolve the harsh shifts and shuddering.
My truck recently had both the hard downshifts and stuttering at idle. I bought all new coil packs and it fixed the stuttering. Now I just need to fix the hard shifting
My goodness, Sir. Excellent vid..Quick question, I will check my fluid level but it is hard shifting from starts. My O2 sensor is showing problem after diagnostic. Could this be a problem in hard shifting? 2019 GMC Kodiak Z71 4x4. Thx
there is a difference between an oxygen sensor overheat and a lean or rich bank one or two code, so make sure that it is an oxygen sensor problem and not a vacuum issue but any time unmonitored air gets past the mass air flow sensor it can cause shift concerns and oxygen sensor concerns
Can you post a LINK for the 6L 80 / 90 transmission?
My issue is the gear shit on my 2018 Chevy Silverado gets stuck and when I use the telescopic steering button and pull steering wheel back and forth it will shift.
I hace a 2018 with 88k. Chevy wants 500 to flush fluud but they dont change filter. Is there a reason for that? I have always changed my fluuds but there is no diostick on ny 8speed tranny and not sure of procedure. It kind of ramdomly bumos when i stop but changes smooth. Any suggestions? Should I change fluid? One transmission shop even says don’t change it
we change the fluid and filter and also make sure that you have your mass air flow sensor cleaned, I have a video on this and we have corrected several shifting complaints this way
I'm on my 3rd, about to be 4th, thank God it's under warranty. The dealer said the rear eand good, latest transmission failed at just over 500 miles, how much does joints pay in the transmission? I've asked them to replace them both each time, something causing the transmission to fail.
brotha do you chew on your transmission? what do you do to kill it in 500?
Main reason these trucks start having transmission problems is people run them on auto always run then on 2wd never auto if its equipped with 4wd
Great video! Thanks much!
my 8l90e took 6 qt with filter,
That is a terrible genearion of GM trucks.