WenmarOpen by Wenmar Pro

Service bulletin PIE0643

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10200171
Published by NHTSA2021-08-09
Manufacturer's numberPIE0643
Manufacturer's date2021-06-01
NHTSA componentELECTRICAL SYSTEM; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

NHTSA's summary

This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Malfunction Indicator Lamp (MIL) illuminated on Driver Information Center (DIC).

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Instrument cluster

Vehicles listed
BUICK ENVISION2021
CADILLAC CT42020, 2021
CADILLAC CT52020, 2021
CADILLAC ESCALADE ESV2021
CADILLAC ESCALADE NA2021 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET CORVETTE2020, 2021
CHEVROLET SUBURBAN2021
CHEVROLET TAHOE2021
GMC YUKON2021
GMC YUKON XL2021

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20V7900002020-12-17. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
PIT5851D2024-01-29. Service bulletin. This Preliminary information communicates an issues with the odometer being incorrect after a programming event and how the dealership can resolve the issue.
07-08-49-020R2023-10-18. Service bulletin. This informational bulletin provides information for the IPC odometer programming method quick reference guide.
PIT5851B2022-12-12. Service bulletin. This Preliminary information communicates an issues with the odometer being incorrect after a programming event and how the dealership can resolve the issue.
PIT5195G2022-06-13. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that the speedometer needle appears to be inaccurate. Dealer should advise the customer the specification for speedometer needle accuracy is +/- 2 MPH at any given speed when looking straight at the needle.
22-NA-1132022-06-06. Service bulletin. This service bulletin provides repair information to correct a customer concern of Head Up Display (HUD) Blank, Non-Responsive to Brightness, Aim, or Page Controls, DTC U0158 Set.
PIT5902A2022-04-18. Service bulletin. This Preliminary information communicates an issues where the fuel filter life can not be reset in the radio display and dealers are to reprogram the IPC with updated cals to correct the issue.
PIT59022022-04-18. Service bulletin. This Preliminary information communicates an issues where the fuel filter life can not be reset in the radio display and engineering is working on a fix.
PIT5837A2022-02-14. Service bulletin. This Preliminary information communicates an issues with false codes setting in vehicles due to timing issues between the modules.
PIT58512021-10-25. Service bulletin. This Preliminary information communicates an issues with the odometer being incorrect after a programming event and how the dealership can resolve the issue.
PIE0636A2021-08-09. Service bulletin. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Malfunction Indicator Lamp (MIL) Illuminated on Driver Information Center (DIC), DTCs P18E9, P18EA and/or P18EB Set.