For 1990-2009 cars

# ISO-MOUNT 'MINI-MAST' ANTENNA SERVICE PARTS

NEW ISO-MOUNT ANTENNA SERVICE PARTS - 1981-1983 CADILLACS

The following Iso-Mount "Mini-Mast" (23mm tube) service parts are available through GMWDD for use in servicing all Cadillac Iso-Mount "Mini-Mast" (23min tube) or Iso-Mount "Slim-Line" (29mm tube) antenna assemblies. The Iso-Mount design can be identified by two rubber grommets securing the motor housing to the mast (see Figure 1).

The Iso-Mount "Slim-Line" antenna was introduced in 1981 on Eldorado ("E") and Seville ("K") and in 1982 on Deville/Brougham ("C"), Limousine ("D") and Commercial Chassis ("Z"). Since approximately May, 1982, the Iso-Mount "Mini-Mast" antenna has been installed in all Cadillacs equipped with power antennas.

Additional parts may be required to adapt the 23mm "Mini-Mast" service parts to vehicles originally equipped with a 29mm "Slim-Line" antenna. Please read all "notes" and "comments" carefully to assure all of the required parts are ordered.

ISO-MOUNT '81-'82 AND SERVICE '83 '82-'83 2ND DESIGN 1ST DESIGN PARTS CIMARRON C,D,Z '83 E, K (2) '83 E, K (1)

Bracket, Upper 22038193 22038187 22038797 Not Used

Bracket, Lower 22038182 22038588 22038589

23mm Ant. Exc. CB 22038701 22038591 Assy.(3) W/CB Not Used 22038703 22038593

23mm Mast & Exc. CB 22038709 22038590 Tube(3)&(4) W/CB Not Used 22038710 22038592

Cable & Rod Exc. CB 22038195 Pkg. (5) W/CB Not Used 22038197

(1) 1st desion has upper crush mount (see Figure 2).

(2) 2nd design has upper bracket mnount (see Figure 3).

(3) Mounting brackets not included.

RF pin and seal included.

RF housing (P/N 22038652) required if coaxial cable connector is threaded design (see Figure 4). (RF housing may be included in later service packages.)

(4) Cup spacer (P/N 22038660) required if installing 23mm "Mini-Mast" tube on a 29mm "Slim-Line" motor housing. (Cup spacer may be included in later service packages.)

(5) Recently released for servicing top section of mast and drive cable separately.

ADDITIONAL ISO-MOUNT SERVICE PARTS

PART NAME PART NO. COMMENTS

Cap, Final Mast 22021393 Housing and Cover 22030932 Services 23mm "Mini-Mast" Tube Housing and Cover 22029571 Services 29mm "Slim-Line" Tube Switch - Cimarron 22038177 Includes Coaxial Cable and Grommet Switch - C,D,Z,E,K 22020275 Armature Package 22020274 Magnet Package 22020279 Gear and Cup 22030317 Bolt and Clip 22020281 Grommet Package 22029572 Cable, Coaxial - C,D,Z,E,K - Threaded Exc. CB 22029560 See Figure 4 - Threaded W/CB 22029573 See Figure 4 - Crimped Exe. CB 22038184 See Figure 4 - Crimped W/CB 22038185 See Figure 4

#### NOTICE: When adapting service mast for a threaded coaxial cable connector, service RF housing (P/N 22038652) must be used. Production antenna RF housing has a longer thread length and will not allow RF pin to fully seat against the mast.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.