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Service bulletin PIC-4816

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 id10026106
Published by NHTSA2008-09-30
Manufacturer's numberPIC-4816
Manufacturer's date2008-07-01
NHTSA componentELECTRICAL SYSTEM; VISIBILITY:WINDSHIELD WIPER/WASHER

NHTSA's summary

GMC: THE WINDSHIELD WIPER WASHERS TURN ON BY THEMSELVES. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system, Glass, wipers and mirrors, Wipers and washers

Vehicles listed
BUICK LUCERNE2006, 2007, 2008, 2009
CADILLAC DTS2006, 2007, 2008, 2009

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

Other bulletins for the same vehicles and component
PIC5376A2023-12-11. Service bulletin. Rain Sense Wipers Operate In Delay Mode.
06-08-43-003E2017-08-15. Service bulletin. This informational bulletin explains how to care for wiper blades.
PIC5376A2017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that the rain sense wipers are not working correctly or are inoperative. Technician will use the scantool to review Body Control Module data on the scan tool for the Wipers, the "Rain Sense Signal". If the data shows a value of "NoGlass", technician should check the windshield for being replaced with a non OEM. If the windshield is not original equipment manufacturer it should be replaced with a windshield from General Motors.
0608430012007-01-24. Service bulletin. WINSHEILD WIPER DRIVE LINK DICONNECTED FROM MOTOR CRANK ARM. *KB