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Mine will sometimes find high gear at first, then sometimes sorta goes to sleep. Sometimes turning it off, then back on will cause it to find itself for a bit, sometimes not, even when set to LO. Same deal as others, manually selecting highest fan speed does not give the same results as the mystery speed. Very strange design/operation.
This is wonderful news. I will be calling my dealer to get the ball rolling shortly. I have been looking forward to getting this issue addressed for quite a while.
Thank YOU!!! Do you know if we will need to wait for parts for this fix?
I'm in the same boat
would be significant here despite what you were told before. Contact your dealer about this new TSB.
Not necessarily, if they say it's performing per spec. it doesn't matter if there is new information. It either works or it doesn't. I know what you're saying and I'm definitely going to bring it up with my dealer, but they may very well say it's performing per spec. ( I don't agree that it is) and not want to perform the repair.
I used to have access to alldata. I don't now. The spec. I remember is 45* on an 80* day and 55* on a 90* day. My tech stated the vent temps were 48* and no problem found. They did not note the ambient temp. but if I recall it did not get much above 80* while they had my truck. I've used two temperature probes and I've never seen air below 52* coming out of the vents with it in the mid 70s-90s. Haven't really looked since the weather has cooled off.
Hi @jakalafus, we understand that this is a possible concern. We recommend scheduling your dealer service and inquiring about the delivery for the required parts. Please send our team a private message if further support is needed, we would be happy to assist you during your service.
Hello @Eatonpcat @99ls1tj and @Hstone556
5thgenrams.com
Brutal already did.Anyone here with a login @ 5thGenRams.com? This dude posted the complete TSB:
A/C Performance
Hello everyone, I have just been advised that a Technical Service Bulletin (TSB #24-001-20) has been released that appears to address concerns similar to the symptoms that are described in this thread. To ensure this TSB applies, please schedule an appointment with your dealer to have a...
Can anyone post it here?
Sounds like the dash needs to come out and that the labor is quite involved. I think I'll see if I can deal with the HVAC weak blower performance before I entertain the fix. None of that stuff ever goes back in place the same after it's ripped out.
hdrams.com
Anyone here with a login @ 5thGenRams.com? This dude posted the complete TSB:
A/C Performance
Hello everyone, I have just been advised that a Technical Service Bulletin (TSB #24-001-20) has been released that appears to address concerns similar to the symptoms that are described in this thread. To ensure this TSB applies, please schedule an appointment with your dealer to have a...
Can anyone post it here?
Sounds like the dash needs to come out and that the labor is quite involved. I think I'll see if I can deal with the HVAC weak blower performance before I entertain the fix. None of that stuff ever goes back in place the same after it's ripped out.
hdrams.com
I already updated the thread in the TSB section with this info and uploaded the pdf file. It was actually posted first on another Cummins forum.
AC Fix TSB (Pre 8/20 build trucks)
TSB #24-001-20 UPDATED TSB: The current TSB is 24-013-21 (new parts list) https://hdrams.com/forum/index.php?threads/a-c-issues-anyone-else.573/post-44758