more help. dash says relearn tire positions and relearn remote key.

[MrDietz]

so some of you may know i did have to replace the bcm in this. i did do the sdm reset, set my key to primary key with a scan tool just a fyi. so i put some tires on and replaced the tire sensors with new qwik sensors from napa. they all test good and have a good battery. while it will relearn i drive it on the freeway about 15 miles and as soon as i get off the freeway the service tire monitor system comes back on. i was sitting waiting to get my son i shut the Tahoe off and went thru the D.I.C. and saw it says relearn remote key and relearn tire positions , I'm pretty sure what ever is going on is with both these i figured I'm just not doing it right or something. the key fob still unlocks and locks the Tahoe so its connected. I did try to do the remote key relearn and i got the chime when it activates and the two chimes after i held the unlock/lock button but that still says relearn remote key on D.I.C. i only have the one key and remote . just thought i would pick everyone's brain. was not sure if i need to activate the relearn in the D.I.C. instead of the on and holding the unlock/lock while key is on or what. thanks in advance .

 

[Fless]

What's the battery health? Had it load tested lately?

Corroded battery cables could cause something like this. But getting the DTC that goes with the DIC message would be key to finding a starting place.

 

[Doubeleive]

you might try scanning the rcdlr system to see if the wireless module is throwing any errors, could be a side effect of a bad bcm.
previous reports of "similar" issue's was a bad module, the module is on the drivers side rear pillar (inside) or mounted on the drivers side between the rear door and pillar, it could be in either location depending on the year but is most likely on the pillar.
not saying go replace it, just something to check with the scanner to see if it is having errors of any kind.

 

[MrDietz]

What's the battery health? Had it load tested lately?

Corroded battery cables could cause something like this. But getting the DTC that goes with the DIC message would be key to finding a starting place.

Battery is brand new just had it charged and tested like 3 times when I was trying to find the bcm problem and no corrosion. Grounds good went thru all those . I am going to scan it today and see what codes it’s throwing if any

 

[MrDietz]

you might try scanning the rcdlr system to see if the wireless module is throwing any errors, could be a side effect of a bad bcm.
previous reports of "similar" issue's was a bad module, the module is on the drivers side rear pillar (inside) or mounted on the drivers side between the rear door and pillar, it could be in either location depending on the year but is most likely on the pillar.
not saying go replace it, just something to check with the scanner to see if it is having errors of any kind.

Yeah I’m going to hook it up today have to barrow my buddy’s scan tool that can check it.

 

[Doubeleive]

Yeah I’m going to hook it up today have to barrow my buddy’s scan tool that can check it.

I would look for any historical communication codes and/or try to use the scanner to do the relearn and see it if works that way. Then go drive it and see if it holds
kind of makes me wonder if the module needs some kind of relearn to the bcm

 

[MrDietz]

So I scanned it and only had the service tire light in the dtc for all four . I remember the tool at work showed the tire pressure and battery life but the scanner was showing one tire at like triple the psi and I checked them with a gauge before relearn and after so I think that one may be the problem. It was also showing the LF not learned even tho I have done it a bunch . The one that was showing way more pressure was the right front but In not sure which one that is since the wheels got swapped and sensors won’t relearn so gonna deflate them one at a time to find it and go from there. The remote relearn I still don’t know what’s going on with that I cleared it and reprogrammed it but it still says that . I will keep you guys posted. See if I mess with it tomorrow or maybe the weekend

 

[MrDietz]

I bought the tool from Amazon to reset the position see if i can figure it out easier once I reset them for the little bit since it will relearn for a short time. I’m wondering if I got one or two bad sensors

 

[MrDietz]

something i just thought about. i replaced the right rear door lock actuator with a amazon one. it would say the door was open and that went away im wondering if that is whats causing the relearn remote key because i know that has a module in it to correct? but i didnt have a code from the bcm. wondering if i need to reset.

 

[MrDietz]

so after messing with it this weekend, i think for the relearn tire position and remote key I'm not sure if that's just something that is on the D.I.C. with key on engine off all the time, because once running its not there , any who i can not figure this out i reset the tpms with a scan tool hoping that would fix it and drove around the wholeweekend and the light stayed off but once i get on the free way for about 10 mins it will come back on. sensors all tested good. im going to try to re write the sensors today and see what that does other then that im not sure. would suck to buy 4 more and still have this happen. do the ppv tahoes have this feature shut off in the bcm or something? to where it wont stay off? hope eveyone had a good weekend. i did for the most part.

 

[Doubeleive]

I have had bad tpms sensors do weird stuff before, but that never affected the fob portion.
if you have a junkyard nearby you might try grabbing a used keyless entry module, it would need to be learned to your vin
that would probably be a cheaper route than 4 tpms sensors
but I think that is also just a gamble, kind of comes with the territory of trying to save money from taking it to a dealer that's going to r@pe you
If you decide to do that, just be sure it is the same part number as yours there are a couple different ones because some vehicles are different mhz
it could also very well be something else....i'm just guessing due to it affecting both the fob & tpms which both go thru that wireless sensor and those modules although rare have been a reported issue by others in the past.
I don't know if your scanner or even a tech2 would learn it to your vin or if you would have to use techline, it could go either way maybe.
some modules can just be learned to a vin and some require techline to program to the vin

 

[MrDietz]

I have had bad tpms sensors do weird stuff before, but that never affected the fob portion.
if you have a junkyard nearby you might try grabbing a used keyless entry module, it would need to be learned to your vin
that would probably be a cheaper route than 4 tpms sensors
but I think that is also just a gamble, kind of comes with the territory of trying to save money from taking it to a dealer that's going to r@pe you
If you decide to do that, just be sure it is the same part number as yours there are a couple different ones because some vehicles are different mhz
it could also very well be something else....i'm just guessing due to it affecting both the fob & tpms which both go thru that wireless sensor and those modules although rare have been a reported issue by others in the past.
I don't know if your scanner or even a tech2 would learn it to your vin or if you would have to use techline, it could go either way maybe.
some modules can just be learned to a vin and some require techline to program to the vin

so key on engine off the DIC does not have the relearn tire position and remote key all the time? does that make sense? i did know if that was just a function you can select. but after checking it again i think i found the one that keeps loosing connection. showing in the live data on the scanner its that same one that keeps saying not learned so i picked up a new one and I'm going to the tire shop after work if they can squeeze me in.to have them swap it out and go from there. thanks for the help. if that don't work i may need to get a module and say f it and try that next. thanks for the feedback

 

[MrDietz]

i will be happy if its just a bad sensor but i didn't buy the amazon ones because i didn't want to have any problems lol.

 

[Doubeleive]

so key on engine off the DIC does not have the relearn tire position and remote key all the time? not sure what you mean, on my 2012 the key must be on and I must use the original fob to put it in learn mode for the tpms. but other than that no idea, never ran into your specific problem before other than having a single tpms be bad in which case it just shows the tpms error each startup

 

[MrDietz]

so key on engine off the DIC does not have the relearn tire position and remote key all the time? not sure what you mean, on my 2012 the key must be on and I must use the original fob to put it in learn mode for the tpms. but other than that no idea, never ran into your specific problem before other than having a single tpms be bad in which case it just shows the tpms error each startup

i will have to show a video of what i mean. looks like i had two sensors that were just intermittent. used my scan tool at work and yeah they would jump all over the place and be fine for like 5 min then just start reading wrong. so i replaced them yesterday and today i will set the tire pressures and see if that worked. im pretty sure it was just the sensors because now its at least letting me know what tire to check instead of just saying service tire monitoring system. cross your fingers guys. once this is done then the suspension is next,then the carpet and dash.

 

[MrDietz]

ok guys i feel super stupid because just like the bcm crap i over think and get lazy instead of doing the digging and being patient i post on here lol. so it was just the two sensors, I'm glad. i recorded a showing on the scanner what the sensors were doing. napa didn't want to refund me . it was the relearn on the dic that was throwing me off. i will post a video later showing what i mean . so yeah its fixed i am glad . i do appreciate all the help though, it does get the gears turning to put me on the right path. that being said i order the front struts and leveling kit for the front and i am going to do some shopping around for the rear springs and shocks today . next weekend i will be riding high lol (hopefully)