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 (U.S.). (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:
- What is the message displayed on the radio screen? See #PIT6209.
- 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
- If the radio is not at the latest software level, did the technician update the radio, clear all codes and recheck for the concern?
- If concerns continue, did the technician disconnect, inspect and reconnect all related connections, clear any codes and recheck for the concern?
- 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.
– Thanks to John Sauer
Updated August 4, 2025
can we please put USA only on this please, up in Canada we dont need to do these apparently