360North
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**Does NOT involve tearing out Dash for Evap & Sensor replacement, like in prior TSB…just Software Updates ONLY**
Just found out about this TSB late last week from another forum, and found the pics (below) buried on a sub-forum here (so credit to the users who made me aware)…I just wanted to make the info front & center here, so owners could easily find it. It apparently was released at end of March, so it’s pretty new. Bottom line, it replaces the old TSB requiring Seats, Console, and Dash to be ripped out for replacing the Evap & Sensor (which apparently did not resolve the issue), in favor of a couple Software Updates via FDRS instead…so we can avoid the stress of interior disassembly ordeal on our new trucks, lol.
That said…I have not had the Evap & Sensor TSB performed on my truck, as I was waiting on responses from those who did…to confirm it resolved the issue or not & the consensus seems to have been “No”.
So…since I have FDRS installed on a PC & the Mongoose cable (from back when I had to fix the OTA update failure issue)…I took it upon myself to attempt the TSB this last weekend at home on my MY2021. It took me about 30mins to an hour (from setup to cleanup)…it was pretty easy to do & saved me a trip to the dealer of having them do it.
So if you have FDRS & want to attempt it, it’s up to you…otherwise, reach out to your dealer about it & see if they can flash your truck’s modules soon. I can’t say if it actually fixes the issue or not yet, as it hasn’t been warm enough here to find out…time will tell. However, it beats the heck out of having the dealer rip your interior out, lol!
Also…if you have a non-OEM Cabin Air filter, like I did (thinking other charcoal or HEPA filters are better) and still have reduced airflow from vents after the TSB…try changing to a K&N Cabin Air filter, it made a HUGE difference in increasing my airflow!! I used to set Fan to 3 and had to change it to 5 after using “other“ filters to get enough airflow…after swap to K&N, I‘m now back to 3 on Fan (much better!).
DISCLAIMER - If you choose to use FDRS yourself to update/flash your truck, you do so AT YOUR OWN RISK…You cannot hold me accountable for any liabilities or issues!!!
Just found out about this TSB late last week from another forum, and found the pics (below) buried on a sub-forum here (so credit to the users who made me aware)…I just wanted to make the info front & center here, so owners could easily find it. It apparently was released at end of March, so it’s pretty new. Bottom line, it replaces the old TSB requiring Seats, Console, and Dash to be ripped out for replacing the Evap & Sensor (which apparently did not resolve the issue), in favor of a couple Software Updates via FDRS instead…so we can avoid the stress of interior disassembly ordeal on our new trucks, lol.
That said…I have not had the Evap & Sensor TSB performed on my truck, as I was waiting on responses from those who did…to confirm it resolved the issue or not & the consensus seems to have been “No”.
So…since I have FDRS installed on a PC & the Mongoose cable (from back when I had to fix the OTA update failure issue)…I took it upon myself to attempt the TSB this last weekend at home on my MY2021. It took me about 30mins to an hour (from setup to cleanup)…it was pretty easy to do & saved me a trip to the dealer of having them do it.
So if you have FDRS & want to attempt it, it’s up to you…otherwise, reach out to your dealer about it & see if they can flash your truck’s modules soon. I can’t say if it actually fixes the issue or not yet, as it hasn’t been warm enough here to find out…time will tell. However, it beats the heck out of having the dealer rip your interior out, lol!
Also…if you have a non-OEM Cabin Air filter, like I did (thinking other charcoal or HEPA filters are better) and still have reduced airflow from vents after the TSB…try changing to a K&N Cabin Air filter, it made a HUGE difference in increasing my airflow!! I used to set Fan to 3 and had to change it to 5 after using “other“ filters to get enough airflow…after swap to K&N, I‘m now back to 3 on Fan (much better!).
DISCLAIMER - If you choose to use FDRS yourself to update/flash your truck, you do so AT YOUR OWN RISK…You cannot hold me accountable for any liabilities or issues!!!
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