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4.

 

If Vehicle has XM module but subscription has expired:

 

Connect male-to-male cable audio cable (See 

Fig. 4

) to  “AUX” input 

jack  on module (See 

Fig. 5

)  

 

 

Fig. 4 

 

 

Fig. 5 

Bluetooth module 

 

5.

 

If vehicle has XM module (subscribed), remote CD changer or RSE: 

Connect straight angle 3.5mm plug from harness  (See 

Fig. 6

) to 

“XM/AUX* input jack on module (See 

Fig. 5

 

Fig. 6

 

6.

 

Connect installation harness right angle 3.5mm plug (See 

Fig.6

) to jack 

on module pigtail (See 

Fig. 7

 

Fig. 7

 

 

7.

 

Connect module 

Red wire

 

to 

12V Accessory supply

 in vehicle.  

Do not 

use 12V constant supply (battery).

 

Tip

: Accessory (ACC) is available on ignition harness (under steering 

column). Remove steering column cover and tap into orange or brown wire. 
Accessory power may also be available from fuse panel.  
Accessory power is active when ignition is in “ACC” or “ON “positions. 

8.

 

Connect module 

black wire

 to ground (radio chassis is a good option), 

cigar lighter plug etc.

 

 

Warning: 

The GM3x-HF will not operate in RAP (Retained Accessory 

Power) mode. Ignition must be turned ON in order to hold phone calls, 
stream applications or listen to XM (if subscribed) 
For module to work in RAP mode we recommend purchasing our 

TR-4

 

module

 

 

9.

 

The GM3x-HF microphone is built-into the control button. To install; 
connect control button 3.5mm plug to “MIC” jack on module (See 

Fig. 5

Summary of Contents for GM3X-HF

Page 1: ...ng the internet community since 1995 Driving without distraction is a necessity for a safer driving experience GM3X HF QUICKSTARTINSTALLATIONGUIDEFORGMCLASSIIWITHXMTUNERMODULEORREMOTECDCHANGER Created...

Page 2: ...he GM3 HF works in 2003 12 GM Class II vehicles equipped with an XM tuner module remote CD changer or RSE See Fig 18 If vehicle only has XM and subscription has expired an AUX input jack is provided f...

Page 3: ...ttery Tip Accessory ACC is available on ignition harness under steering column Remove steering column cover and tap into orange or brown wire Accessory power may also be available from fuse panel Acce...

Page 4: ...mic It is best to mount button facing driver USB charging port install options Should you decide to use charging port we suggest one of 3 connecting options A Flush to dash panel requires drilling a...

Page 5: ...o mount USB support bracket See Fig 14 using adhesive backing or screws Fig 14 USB mounting bracket 2 Insert USB male terminal through bracket See Fig 15 and connect to module USB port See Fig 11 Fig...

Page 6: ...formed upon initial install at which the GM3x HF will automatically reconnect with paired device upon entering vehicle 1 Turn vehicle ignition to ON 2 Red LED inside module should flash otherwise chec...

Page 7: ...ess button twice call goes to VM Cancel outgoing call Press button twice Activate Voice Control Press hold button for 2 seconds Notes 1 If playback is distorted adjust volume on Bluetooth device 2 To...

Page 8: ...structions also apply to enable Aux playback option instead of XM CD changer 7 Where is the best place to install control button mic We found that having the control button mic mounted higher on the d...

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