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Service bulletin 05-08-46-006S

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 id10137929
Published by NHTSA2018-05-21
Manufacturer's number05-08-46-006S
Manufacturer's date2014-05-22
NHTSA componentELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

This informational bulletin advises the technician to update the Onstar from an analog system to a digital system if the customer wishes.

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, Software

Vehicles listed
BUICK CENTURY2004, 2005
BUICK LESABRE2000, 2001, 2002, 2003, 2004
BUICK RAINIER2004
BUICK REGAL2004
BUICK RENDEZVOUS2003, 2004
CADILLAC CTS2003, 2004, 2005
CADILLAC DEVILLE2002, 2003, 2004
CADILLAC ESCALADE2003, 2004
CADILLAC ESCALADE ESV2003, 2004 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC SEVILLE2002, 2003, 2004
CADILLAC SRX2004, 2005
CADILLAC STS2005
CADILLAC XLR2004, 2005
CHEVROLET AVALANCHE 15002003, 2004 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET CAVALIER2003, 2004, 2005
CHEVROLET COBALT2005
CHEVROLET COLORADO2004
CHEVROLET CORVETTE2005
CHEVROLET EQUINOX2005
CHEVROLET EXPRESS2003, 2004
CHEVROLET IMPALA2001, 2002, 2003, 2004
CHEVROLET MALIBU2004, 2005
CHEVROLET MONTE CARLO2001, 2002, 2003, 2004
CHEVROLET SILVERADO 1500 HD2003, 2004 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SUBURBAN2003, 2004
CHEVROLET TAHOE2003, 2004
CHEVROLET TRAILBLAZER2002, 2003, 2004
CHEVROLET VENTURE2003, 2004, 2005
GMC C SERIES2004
GMC CANYON2004
GMC ENVOY2002, 2003, 2004
GMC ENVOY XUV2004 (the catalog's model; the bulletin names a series or trim of it)
GMC G SERIES2003
GMC SAVANA2003, 2004
GMC SIERRA 15002003, 2004 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA DENALI2003 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON2003, 2004
GMC YUKON DENALI2003, 2004 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON XL2003, 2004
HUMMER H22003, 2004
OLDSMOBILE AURORA2001, 2002, 2003
OLDSMOBILE BRAVADA2002, 2003, 2004
OLDSMOBILE SILHOUETTE2003, 2004
PONTIAC AZTEK2003, 2004
PONTIAC BONNEVILLE2000, 2001, 2002, 2003, 2004
PONTIAC G62005
PONTIAC GRAND PRIX2004
PONTIAC MONTANA2003, 2004
PONTIAC MONTANA2005
PONTIAC MONTANA EXT2003, 2004 (the catalog's model; the bulletin names a series or trim of it)
PONTIAC PURSUIT2005
PONTIAC SUNFIRE2003, 2004, 2005
SATURN ION2003, 2004
SATURN L-SERIES2003
SATURN L2002003
SATURN L2002004
SATURN L3002003, 2004
SATURN VUE2002, 2003, 2004

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

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15-08-73-001A2018-05-21. Service bulletin. This informational bulletin explains how to update the older Onstar module software to new software over GSA.
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PIT5264A2018-05-07. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that are travelling from Canada to the United States. While in the United States they are unable to receive Turn-by-Turn directions. Due to the existing cellular provider not having roaming agreements in areas outside of Canada to support transmitting of the packet data required for Turn-By-Turn feature to operate. The customer has 3 options while traveling through the United Sates. First if the vehicle is equipped with a navigation radio they can request a "Destination Download" to the vehicle. Second if the customer uses the OnStar RemoteLink app they can send the directions to the vehicle. The third option would be to have the vehicle loaded with a ?500 phone number? The customer will no longer be able to use their Hands Free Calling minutes when the new 500 phone number is loaded. If a customer chooses to restore Hands Free Calling in the future a new phone number will be assigned to the vehicle; previous phone numbers are not available.
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