2024 GMC 1500 Ultimate no radio volume??

[2BigDogs]

So, got off work, hopped into the truck, started up... no radio, no audio of any kind. Tried the "hold end call on steering wheel for ten seconds", no luck. Called dealer service department, guy said "Huh, yeah. Disconnect negative terminal of the battery for 5 minutes, should fix it." What he didn't tell me was that when you do that, and then reconnect the battery, the horn alarm starts going off. WFT?? Does this happen enough that the service department tells you to "disconnect the battery for 5 minutes", even if you don't carry tools in the truck?

 

Got the alarm to shut off. However, my question is how often does the truck's audio (radio, phone, alerts, etc) just randomly shut off? Tried to call the wife... nope!! No audio at all.

 

Yes, I realize the truck is still under warranty, however, the engine issues seem to take priority.

[bobder41]

My truck did this one time. I was able to correct the issue by turning off the truck and letting it sit for 10 minutes. Restarted the truck and have not had any more issues.

[Z45]

Mine did this once. Went to dealer and they fixed. Had to reboot the radio system.   According to the tech that did it, common issue with the current system (took about 15 min). 

 

A friend said Onstar fixed his.  I tired but the Onstar tech did not speaka the good English and I had to hang up because I could not understand him. Very frustrating, he was getting po'd at me because I kept telling him I can not understand you!

Edited May 14, 2025 by Z45

[2BigDogs]

24 minutes ago, bobder41 said:

My truck did this one time. I was able to correct the issue by turning off the truck and letting it sit for 10 minutes. Restarted the truck and have not had any more issues.

This was the third time for me. First two the dealer "supposedly" took care of it by reprograming modules. Now I wonder if I will be left hanging with no connectivity with an $85K truck.

 

 

[Port Tack Farm]

This happened to me for the first time yesterday.  No sounds at all, no radio, no door chimes, no turn signal beeping, etc.  The next time I started it back up all was fine.  I'm not even sure if it sat 10 minutes between issues and restart.  I didn't panic or worry because I've heard this was a known issue.  I suspect something in the computer system isn't launching or starting at start up as it should.

[2BigDogs]

@Port Tack Farm I hope you're right. Next time I'll wait the ten minutes and see what happens.

[redwngr]

Might need a new radio.

 

There are specific steps a dealer must do to get one shipped in.  

 

Of course it's also possible the steps might correct the problem

 

Required Information for Restricted IOK Radios – TechLink

 

Required Information for Restricted IOK Radios

May 13, 2025

The infotainment system (RPO IOK) on 2022-2025 Silverado, Tahoe, Suburban, Sierra, Yukon, HUMMER EV; 2024-2025 Corvette, Silverado HD and Sierra HD models is on restriction. (Fig. 3) If the radio must be replaced, there are several procedures that must be followed to order a new radio.

 

Fig. 3

 

The IOK Radio part numbers 85086705 and 85086710 have been put on restriction based on #PIC6602. A PQC case will need to be created prior to ordering the part through Specmo. The PQC phone number is 866-654-7654.

Required Information

PQC will ask for the following information when creating the case:

1. What is the message displayed on the radio screen? See #PIT6209.
2. Did the technician confirm the radio software is up to date following:

• Bulletin #24-NA-261 – 2022-2024 Full-Size Trucks and SUVs
• Bulletin #24-NA-276 – 2025 Full-Size Trucks
• Bulletin #24-NA-168 – 2022-2024 HUMMER EV
• Bulletin #25-NA-098 – 2024-2025 Corvette and 2025 HUMMER EV

3. If the radio is not at the latest software level, did the technician update the radio, clear all codes and recheck for the concern?
4. If concerns continue, did the technician disconnect, inspect and reconnect all related connections, clear any codes and recheck for the concern?
5. What is the current as-built version for the radio?

Once the PQC case is created and the part is released, dealerships can reach out to Specmo to order the radio. Specmo is the only approved supplier of the part. They will verify the PQC case and verify the part can be shipped.

Refer to #PIC6602 for additional information.

Edited May 15, 2025 by redwngr

[2BigDogs]

20 hours ago, redwngr said:

Might need a new radio.

 

There are specific steps a dealer must do to get one shipped in.  

 

Of course it's also possible the steps might correct the problem

 

Required Information for Restricted IOK Radios – TechLink

 

 

Thanks for the info!  You gave me the first breadcrumb to follow. LOL

 

While searching for #PIC6602, I also found #PIT6101Q which says

So, I'm going to see if I can check the software version or I might have a bad/intermittent amplifier.

[redwngr]

You're under warranty.

Take it in and let them provide the service you already paid for. 

 

If it needs a radio, they will have to go thru the steps anyway.

 

 

 

Edited May 16, 2025 by redwngr

[Port Tack Farm]

This is all very helpful.  If my problem repeats, I'll schedule an appointment to take it in.