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Posted
4 hours ago, newdude said:

 

 

 

Earth to Ken?  Others keep de-railing this thread and its getting old.

 

 

 

No one is forcing you to stay, fella. I'm sure the guy can read. He's an engineer. 😂

  • Like 1
Posted
On 9/2/2022 at 1:50 PM, Amcguy1970 said:

 

Since you are no GM tech then you probably understand being an engineer doesn't matter in this situation (unless you are a specific automotive engineer?). Lets apply some common sense here. All those forward sensors use cameras and radar to determine points (probably some other types of waves being sent out too), what you did was alter those points. There has to be some leeway built in from the factory for towing and hauling as well as other parameters that might change during use but you pushed those readings to the edge where at times it is outside of the parameters and causes faults. I see companies mention needing calibrations to sensors when ride height is changed. Shoot, even changing the windshield and removing the reinstalling the camera needs a calibration to correct and change. Point is they are probably right, and it isn't a cop out. The response from RC sounds suspect, nope, never heard of this before; like they are going to say, yeah a quarter of the trucks have had issues sorry. 

 

Lifts affect everything, you have to pay to play (that is the cost for looking cool), it might just need a recalibration. Some manufacturers mention with their factory lifts that safety sensor (and non safety sensors) might need a calibration or they include it. I think the Trailboss kit does include calibrations, Toyota mentions maybe needing one and I am sure others as well. They don't want to assume liability in an accident because you put their sensors out of spec and it read wrong, they are covering their own ass it sounds like and I don't blame them.

 

BTW, did you only lift the front? How much? It looks nose high in the picture. 

 

 

Care to elaborate or is that just a childish rant? I am guessing you will be bringing up lifter failures and the whole 0.05% that have that happened and some rough shifting 8speed transmissions due to bad fluid? 

 

GM is well and known to build some long lasting and durable mechanical components, but today as with all manufacturers vehicles are ton more complicated and connected which leaves more room for errors. You see it with any brand you name that someone should switch to who yells "GM sucks". 

 

Either way until you can provide some legit broad examples that needed a recall due to design short comings (if there is no recall it wasn't that large of an impactful issue) then your statement is just flat out false; and solely of an opinion of someone who I am guess was upset with an outcome on an issue with a purchased vehicle and is now just here to troll and complain. 

 

Tyler

Tyler,

 

Thanks for taking to the time to review/respond, I appreciate that. 

 

It's a 3.5" front lift, 2.5" rear, still leaves about 1" of rake to the front end.   Made by RC specifically for trucks with the ARC systems.  Aside from their direct feedback on the phone, I've looked at their reviews from folks with Denalis and AT4's, same trucks essentially, zero impact to other truck systems.  I'd think that if people had issues with needing to recalibrate the systems with this small of a lift, they'd have made mention in their reviews.  To be honest, I keep things pretty modest with regards to lifts - and it's only because I do actually go offroad come hunting season in northern Maine, so I do need the clearance. If there were known issues or a need to recalibrate, I wouldn't have done it.

 

I understand engineering, practical applications across many disciplines and industries to include Naval with tons of radar/telemetry, PLCs, sensors, etc etc - automotive engineering is not on any level above what I know from the others. What I meant was that while yes, I can see that a variation in height may have impact on the effectiveness and accuracy of those systems, outright failure of them doesn't make any practical sense (can't reset, can't reprogram, not even giving a signal, etc).   

 

Looking through the forums with Intellibeam and collision alert sensors, I've seen a lot of 2019-2021s that have had similar issues and while some dealers threw their hands up, others stuck with it and found that a number of resets were needed or there was chaffing in a harness somewhere from the factory (none of the ones I saw made mention they had lifts).  So while I firmly believe anything is possible (I guess it "could" be the lift), the evidence doesn't point that direction based on multiple sources of info - that's why I felt the dealership was somewhat giving me a "cop-out" response by defaulting to the ol' "it's the lift" argument.  

  • Like 1
Posted
On 9/2/2022 at 2:08 PM, Jsdirt said:

You're probably right, but it's worth a shot anyway.

 

Here's a question for everyone ... what kind of piece of ****** loses 20 computers because of a lift kit??? :wtf:

I agree, that was kind of my point.  If this was the lift affecting the telemetry of the camera in the front, how does that cause outright failure of 20+ systems - doesn't even make sense.  That's why I'm thinking a short or chaff somewhere.  Or yeah, TERRIBLE design! 

  • Like 2
Posted

Par for the course today. They're getting top dollar for these trucks, yet they find the cheapest, most unreliable low-bidder parts throughout the 3rd world to install in it. Never ceases to amaze me. Been seeing it over 20 years with GMs stuff.

 

Problem today is, any other brand you pick is just as bad. There's no escaping it. Only solution for myself is to buy something built decades ago, and resto-mod it into something simple, reliable, powerful, and cheap to operate. Not everyone has time for that, though, understandably.

  • Like 1
Posted
On 9/2/2022 at 3:08 PM, newdude said:

 

 

Gonna play a bit of both sides here.  The dealer is "technically" not in the wrong on blaming the lift, but they aren't 100% right either. 

 

Any time a vehicle is brought to a GM dealer, the dealer is required to note all and any accessories installed on them, be it factory or aftermarket.  Aftermarket components typically get shotgunned as the ultimate "that's what is causing the issue" as they are...aftermarket.  It sounds like they could be taking the easy way out, unless they have 100% PROOF that the main point of what's causing the failures is from the lift install.  

 

"Technically" your lift kit does have an electrical interface because the suspension does.  The ARC sensor brackets as they are supposed to "correct" the ARC sensors so they read properly.  Is your kit a lift or is it just a level?  

 

The other thing to consider is that the camera systems are designed and programmed to work with stock ride height and rake as well as wheel/tire size from the factory.  Even if you installed the GM Trail Boss 2 inch lift, there is a camera reprogram that has to be done.  

 

Did they give you any sort of documentation with codes explaining what modules are "failing"?  If you don't, see if OnStar can send you the codes as they can scan the truck assuming you still have your trial or a plan.  I'm curious as to what codes are there.

 

Also, one other very important question.  What size tires was the truck built with?  What size tires do you have on it now?  

 

Thanks for the response.  Oh I get it, they need to document the aftermarket parts, because I do understand that some certainly will impact their equipment and I get the liability they are trying to avoid with that.  But, to your point they've offered no actual evidence that the lift is the cause - more of a recommendation/opinion. 

 

The truck does have ARC, the kit comes with adapter brackets that maintain the OEM telemetry on the sensors.  So, unless RC completely screwed the pooch on that design, I'd imagine that the ARC itself wouldn't be the cause - but, I could see the height difference maybe causing issues with the cameras.  The kit is a lift and level - 3.5" front, 2.5" rear to leave some rake. 

 

They did give me a printout of the codes they were seeing.  I'll have to dig that out and share it. 

 

Do you think that if I asked them to apply the Trailboss or factory 2" lift recalibration, that would possibly work (if this is the lift kit that is causing this)?  Not the same height, but I'd think it'd fall pretty close within its tolerances...

 

Tires are 285/75R18...so about 35" vs the factory 32.5"-33".  So, all told, I may be sitting about 1.5"-2" taller than a TrailBoss...not a ton, but it is different.  

 

Posted
2 hours ago, Ken Rackliff said:

Thanks for the response.  Oh I get it, they need to document the aftermarket parts, because I do understand that some certainly will impact their equipment and I get the liability they are trying to avoid with that.  But, to your point they've offered no actual evidence that the lift is the cause - more of a recommendation/opinion. 

 

The truck does have ARC, the kit comes with adapter brackets that maintain the OEM telemetry on the sensors.  So, unless RC completely screwed the pooch on that design, I'd imagine that the ARC itself wouldn't be the cause - but, I could see the height difference maybe causing issues with the cameras.  The kit is a lift and level - 3.5" front, 2.5" rear to leave some rake. 

 

They did give me a printout of the codes they were seeing.  I'll have to dig that out and share it. 

 

Do you think that if I asked them to apply the Trailboss or factory 2" lift recalibration, that would possibly work (if this is the lift kit that is causing this)?  Not the same height, but I'd think it'd fall pretty close within its tolerances...

 

Tires are 285/75R18...so about 35" vs the factory 32.5"-33".  So, all told, I may be sitting about 1.5"-2" taller than a TrailBoss...not a ton, but it is different.  

 

 

 

For the tire size, did you install any sort of speedometer calibration device?  

 

Also yea, if you happen to come across the time, I'd love to see what codes they've got out of the truck.  

Posted
7 minutes ago, newdude said:

 

 

For the tire size, did you install any sort of speedometer calibration device?  

 

Also yea, if you happen to come across the time, I'd love to see what codes they've got out of the truck.  

No, I did not recal the speedo.  It's a couple MPH off at higher speeds.  I didn't recal, because I didn't want to mess with the OEM electrical systems or setups.

 

See attached. Found the list of codes for the failed units from the dealership.  23 total DTCs... I can see that many relate to the camera system(s), BUT most reference outright lost communication with the PCUs...

SilveradoDTCcodes.pdf

Posted
2 hours ago, Ken Rackliff said:

No, I did not recal the speedo.  It's a couple MPH off at higher speeds.  I didn't recal, because I didn't want to mess with the OEM electrical systems or setups.

 

See attached. Found the list of codes for the failed units from the dealership.  23 total DTCs... I can see that many relate to the camera system(s), BUT most reference outright lost communication with the PCUs...

SilveradoDTCcodes.pdf 103.09 kB · 0 downloads

 

 

 

So I found one thing that seems worth a look, and its something you can try since they seem to be giving you a hard time.  PI is below.  The only thing you might not be able to do is a code wipe, but if you have something like a BlueDriver or OBDMXLink+ you might be able to.

 

Its quite possible the dealer might have done this PI, but sounds like they might not have since it they scanned and said tough luck its lifted.  

 

 

PIT5912E: Lane Keep Assist Unavailable / Adaptive Cruise Control Inop / Service Driver Assist Systems / Amber Front Collision Icon On / Dead Battery / No Crank / Front View Camera / Auto Start Stop Inop / DTC U3000 49 - (Aug 29, 2022)

 

With RPO UHY - your truck has this code

WithOUT RPO UGN - does NOT have this code so this PI does apply

 

Some customers may comment on an amber Forward Collision icon displayed in the IPC, as shown below. Also, DTC U3000 sym49 may or may not be set current in the Front View Camera Module.  In some cases, there could be a low or dead battery condition. Customers may also notice certain features related to the Front View Camera are unavailable, such as:  

 

Forward Collision Alert (RPO: UEU)

Following Distance Indicator (RPO: UE4)

Low Speed Collision Mitigation Braking (RPO: UHY)

Pedestrian Collision Mitigation Braking (RPO: UKJ)

Lane Keep Assist (RPO: UHX)  

Automatic High Beam Assist (RPO: TQ5)

Adaptive Cruise Control (RPO: KSG)

 

Note: Because this condition could cause a low/dead battery, it can cause the Auto Stop/Start feature to be disabled due to the battery start of charge.  The front view camera module issue should be corrected first before diagnosing an auto stop/start complaint.

 

Cause

The cause of this concern could be Onstar performing a task, which causes the B174W Front View Camera to set the DTC and disable during the next vehicle start up. 

 

Correction

Perform the following to repair the concern: 

 

Note: If the battery was low or dead, then charge and test the battery. The battery may require charging a second time before it will pass the test.  

 

Turn the ignition off.

 

Remove the F11DR fuse for the B174W Front View Camera, located in the X51R Right Instrument Panel Fuse block.

 

Leave the fuse removed for 1 minute, then reinstall the fuse.

 

Clear any DTC's and check camera operation.

If the camera operation has returned, then no further action is required.

If the camera operation has NOT returned, then perform a camera relearn using GDS2.

If the camera operation has returned after the camera relearn, then no further action is required.

If the camera operation has NOT returned after the camera relearn then perform normal SI diagnostics and repair as necessary.  

  • Thanks 1
Posted
5 hours ago, Ken Rackliff said:

Thanks for the response.  Oh I get it, they need to document the aftermarket parts, because I do understand that some certainly will impact their equipment and I get the liability they are trying to avoid with that.  But, to your point they've offered no actual evidence that the lift is the cause - more of a recommendation/opinion. 

 

The truck does have ARC, the kit comes with adapter brackets that maintain the OEM telemetry on the sensors.  So, unless RC completely screwed the pooch on that design, I'd imagine that the ARC itself wouldn't be the cause - but, I could see the height difference maybe causing issues with the cameras.  The kit is a lift and level - 3.5" front, 2.5" rear to leave some rake. 

 

They did give me a printout of the codes they were seeing.  I'll have to dig that out and share it. 

 

Do you think that if I asked them to apply the Trailboss or factory 2" lift recalibration, that would possibly work (if this is the lift kit that is causing this)?  Not the same height, but I'd think it'd fall pretty close within its tolerances...

 

Tires are 285/75R18...so about 35" vs the factory 32.5"-33".  So, all told, I may be sitting about 1.5"-2" taller than a TrailBoss...not a ton, but it is different.  

 

 

 

As far as the Trail Boss calibrations for the cameras, its a bit of a grey area.  GM has to get an authorization code that is provided inside the lift install which is the handshake that the GM lift kit was installed to the truck and lets them write new calibration files for the cameras and power steering control module.  

 

After re-reading your original post, you had 2500mi AFTER the lift was installed of zero issues.  No camera faults, etc.  To me, that right there would possibly rule out the lift being the cause.  None of the codes in there are for suspension either.  

  • Like 1
Posted
4 hours ago, newdude said:

 

 

As far as the Trail Boss calibrations for the cameras, its a bit of a grey area.  GM has to get an authorization code that is provided inside the lift install which is the handshake that the GM lift kit was installed to the truck and lets them write new calibration files for the cameras and power steering control module.  

 

After re-reading your original post, you had 2500mi AFTER the lift was installed of zero issues.  No camera faults, etc.  To me, that right there would possibly rule out the lift being the cause.  None of the codes in there are for suspension either.  

I greatly appreciate the help! I’ll for sure give your correction PI a shot! Couldn’t hurt.

 

Obviously I’m not a GM Tech, but my thought process aligned with yours in that the fact none of this occurred immediately following install of the lift, so it “shouldn’t” be the lift causing it. 
 

Again, appreciate the help. Will post once I’ve tried the correction this weekend. Thanks!

Posted
On 9/8/2022 at 3:56 PM, newdude said:

 

 

 

So I found one thing that seems worth a look, and its something you can try since they seem to be giving you a hard time.  PI is below.  The only thing you might not be able to do is a code wipe, but if you have something like a BlueDriver or OBDMXLink+ you might be able to.

 

Its quite possible the dealer might have done this PI, but sounds like they might not have since it they scanned and said tough luck its lifted.  

 

 

PIT5912E: Lane Keep Assist Unavailable / Adaptive Cruise Control Inop / Service Driver Assist Systems / Amber Front Collision Icon On / Dead Battery / No Crank / Front View Camera / Auto Start Stop Inop / DTC U3000 49 - (Aug 29, 2022)

 

With RPO UHY - your truck has this code

WithOUT RPO UGN - does NOT have this code so this PI does apply

 

Some customers may comment on an amber Forward Collision icon displayed in the IPC, as shown below. Also, DTC U3000 sym49 may or may not be set current in the Front View Camera Module.  In some cases, there could be a low or dead battery condition. Customers may also notice certain features related to the Front View Camera are unavailable, such as:  

 

Forward Collision Alert (RPO: UEU)

Following Distance Indicator (RPO: UE4)

Low Speed Collision Mitigation Braking (RPO: UHY)

Pedestrian Collision Mitigation Braking (RPO: UKJ)

Lane Keep Assist (RPO: UHX)  

Automatic High Beam Assist (RPO: TQ5)

Adaptive Cruise Control (RPO: KSG)

 

Note: Because this condition could cause a low/dead battery, it can cause the Auto Stop/Start feature to be disabled due to the battery start of charge.  The front view camera module issue should be corrected first before diagnosing an auto stop/start complaint.

 

Cause

The cause of this concern could be Onstar performing a task, which causes the B174W Front View Camera to set the DTC and disable during the next vehicle start up. 

 

Correction

Perform the following to repair the concern: 

 

Note: If the battery was low or dead, then charge and test the battery. The battery may require charging a second time before it will pass the test.  

 

Turn the ignition off.

 

Remove the F11DR fuse for the B174W Front View Camera, located in the X51R Right Instrument Panel Fuse block.

 

Leave the fuse removed for 1 minute, then reinstall the fuse.

 

Clear any DTC's and check camera operation.

If the camera operation has returned, then no further action is required.

If the camera operation has NOT returned, then perform a camera relearn using GDS2.

If the camera operation has returned after the camera relearn, then no further action is required.

If the camera operation has NOT returned after the camera relearn then perform normal SI diagnostics and repair as necessary.  

So, your SI worked! Boom, cleared DTCs, all systems are functioning as they should. Test drove it 20 miles day and night, everything works! Thanks so much! Admittedly I had already pulled the fuses I could find relating to camera and radar systems, but didn’t realize there was a third fuse panel on the passenger side 🤦🏼‍♂️
 

So now I’m certainly questioning how “hard” my dealer really tries to remedy this issue. On to a new dealer for service and sales im the future I suppose! 
 

Again though, thanks so much NewDude!!!! You rock, appreciate the help! 

  • Like 2
Posted

Good deal - glad that's all it was. Yep - you need a new dealer. Par for the course today! 

  • Like 1
Posted
On 9/10/2022 at 8:37 PM, Ken Rackliff said:

So, your SI worked! Boom, cleared DTCs, all systems are functioning as they should. Test drove it 20 miles day and night, everything works! Thanks so much! Admittedly I had already pulled the fuses I could find relating to camera and radar systems, but didn’t realize there was a third fuse panel on the passenger side 🤦🏼‍♂️
 

So now I’m certainly questioning how “hard” my dealer really tries to remedy this issue. On to a new dealer for service and sales im the future I suppose! 
 

Again though, thanks so much NewDude!!!! You rock, appreciate the help! 

 

 

Glad to see this worked out for you.  

  • Like 1
  • 1 year later...
Posted

Sounds like something has happened to one of the main grounds between the frame and body engine and body or both. Seen a 2019 a dealer said needed and ECM TCM and I don’t know how many other modules and wanted 10k to do the repair and could not explain why all these failed. This was a stock I lifted truck. Took it to someone with some sense and the corrosive things they use on our roads had ate through that wonderful 10 cent braided uninsulated grounf between the frame and body. Old boy put a nice insulated heavy cable on it good to go.

  • Like 1
Posted (edited)

Not surprised. I've seen these kinds of failures a million times on 21st century stuff. The newer it is, the cheaper the wiring, and a half-billion more miles of it, too. 

 

Sad that you have to re-engineer stuff that costs $60,000 and up.

 

I finally threw in the towel and dumped that POS Silverado after 16 agonizing years. Replaced it with a '93 W250 with a Cummins and a 5-speed. Couldn't be happier! Thing is a breeze to modify and maintain, completely unlike the Silverado. And it tows effortlessly, without having to scream the engine to 5k on every hill. 

 

Should've bought this thing 30 years ago!

 

93-Dodge-D250-ad-2.jpg

 

IMG-8850.jpg

Edited by Jsdirt
Can't upload pics here!! GRRR ...

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