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Information on Difficult to Install Fixed Radio Antenna Mast

Subject:Information on Difficult to Install Fixed Radio Antenna Mast

Models:2006-2007 Buick Rainier
2006 Cadillac Escalade Models
2006 Chevrolet SSR
2006-2009 Chevrolet Avalanche, Colorado, Silverado (Classic and New Style), Suburban, Tahoe, TrailBlazer Models
2006 GMC Denali
2006-2009 GMC Canyon, Envoy Models, Sierra (Classic and New Style), Yukon, Yukon XL
2006-2009 Saab 9-7X



This bulletin is being revised to add the 2009 model year for the Fullsize pickup and Utility models. Please discard Corporate Bulletin Number 07-08-44-001B (Section 08 -- Body and Accessories).


Do This

Don't Do This

Install the correct antenna mast.

DO NOT replace the antenna base.

A design change was made to the antenna base and antenna mast starting in October 2005. The radio antenna base size increased from 6 mm (0.23 in) to 7 mm (0.27 in) for improved stability and radio reception.


Object Number: 1879606  Size: SH

There are two different design antenna masts available. The antenna masts can be distinguished by the outer bottom of the antenna mast. The first design antenna mast (1) will have a six-sided hex design and a 6 mm (0.23 in) inside diameter thread. The second design antenna mast (2) will have two flats on the outer mast and a 7 mm (0.27 in) inside diameter thread.

The second design antenna mast will have more resistance when installing due to the interference fit of the threads. A wrench will be needed to install the antenna mast.

Important: Use a protective tape or a cloth inside an adjustable wrench when installing the mast. This will help prevent damage to the painted coating on the mast.

Tighten the antenna mast.

Tighten
Tighten to 6 N·m (53 lb in).

Part Number

Description

15087886

Radio Antenna Mast (First Design)

15141455

Radio Antenna Mast (Second Design)