Service bulletin PIT-4662

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)
Type	Service bulletin
NHTSA id	10026744
Published by NHTSA	2008-12-12
Manufacturer's number	PIT-4662
Manufacturer's date	2008-06-01
NHTSA component	ELECTRICAL SYSTEM:WIRING; SEATS; ELECTRICAL SYSTEM

NHTSA's summary

GMC: SIR MIL DTC B0084 AND/OR B0085. THIS CONCERN COULD BE CAUSED BY BROKEN SEAT POSITION SENSOR CIRCUITS UNDER THE DRIVER OR PASSENGER FRONT SEATS. OVER TIME, FROM REPEATED SEAT MOVEMENT, THE WIRING COULD BREAK. *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, Seats, Wiring and fuses

Trouble codes named

B0084, B0085

Vehicles listed
CADILLAC ESCALADE	2003, 2004, 2005, 2006
CADILLAC ESCALADE ESV	2003, 2004, 2005, 2006 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC ESCALADE EXT	2003, 2004, 2005, 2006 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET AVALANCHE	2003, 2004, 2005, 2006
CHEVROLET SILVERADO CLASSIC	2003, 2004, 2005, 2006, 2007 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SUBURBAN	2003, 2004, 2005, 2006
CHEVROLET TAHOE	2003, 2004, 2005, 2006
GMC SIERRA CLASSIC	2003, 2004, 2005, 2006, 2007 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON	2003, 2004, 2005, 2006
GMC YUKON DENALI	2003, 2004, 2005, 2006 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON DENALI XL	2003, 2004, 2005, 2006 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON XL	2003, 2004, 2005, 2006
GMC YUKON XL DENALI	2002, 2003 (the catalog's model; the bulletin names a series or trim of it)

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
100089005G	2019-05-13. Service bulletin. This warranty admin bulletin explains to the technician additional information may be needed when submitting transactions when doing wiring repairs.
100089005H	2019-03-18. Service bulletin. This warranty admin bulletin explains to the technician additional information may be needed when submitting transactions when doing wiring repairs.
10-00-89-005C	2018-06-04. Service bulletin. This informational bulletin is a revision for 10-00-89-005B to add the 2014 model year and labor codes.
10-00-89-005E	2018-05-21. Service bulletin. This warranty administration bulletin adds the 2016 model year to a communication which provides dealership personnel revised wiring repair labor operations and required additional information.
13-08-116-001	2018-04-16. Service bulletin. This technical bulletin provides a procedure on suspected tampering due to aftermarket ALDL or DLC interface devices causing multiple issues.
100089005D	2017-12-22. Service bulletin. This warranty informational bulletin advised the technician that when performing a wiring repair, more information is required.
10-08-42-001D	2017-08-15. Service bulletin. This technical bulletin provides a procedure to check the headlamp wiring connector and replace if damaged.
PIT4844D	2017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician with the installation of Cruise Control on a vehicle which did not come equipped with the option. Technician will need to contact the Techline Customer Support Center to determine if a calibration is available for the vehicle. If they are able to provide a calibration for the vehicle then order steering wheel with cruise control buttons, steering wheel sir coil, and steering column wiring harness.
PIT5184	2017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have an instrument panel backlighting flashes, flickers or inoperative, unwanted horn activation, radio controls inoperative or unwanted activation, OnStar unwanted activation, and cruise control inoperative. Technician should inspect for a short to ground on the steering wheel near the Supplemental Inflatable Restraint coil connector X2 and make necessary repairs to any shorted circuits and then position the wiring.
PIT5184A	2017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have an instrument panel backlighting flashes, flickers or inoperative, unwanted horn activation, radio controls inoperative or unwanted activation, OnStar unwanted activation, and cruise control inoperative. Technician should inspect for a short to ground on the steering wheel near the Supplemental Inflatable Restraint coil connector X2 and make necessary repairs to any shorted circuits and then position the wiring.