2003 Cadillac Escalade EXTFACTORY OEM SERVICE PROCEDURE

Cellular Communication Component Views

WARNING: This page is about a different car, the 2004 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Cellular Communication Components View (UE1)
GM1375715Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Inside Rearview Mirror (ISRVM)
2 Automatic Dimming Photo Cell
3 OnStar Indicator Light
4 Emergency Button
5 OnStar Button
6 Cellular Microphone
7 Call Button
8 Electrochromatic Mirror Button
9 Electrochromatic On Indicator
10 Cellular Antenna Coax Connector
11 Cellular Antenna
12 Rear Defogger Connector C2
13 Splice S309
14 Ground G304
15 Vehicle Communication Interface Module (VCIM)
16 Navigation Antenna Coax Connector
17 VCIM Connectors
18 Cellular Antenna Coax Connector
19 Navigation Antenna Coax Connector
20 Navigation Antenna
Fig 2: Cellular Antenna Component View
GM1347688Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Cellular Antenna (Outside View)
2 Upper Right Corner of Rear Window Glass
3 Rear Window Defogger Grid
Factory Service Tools

Use the Manual With the Right Hardware

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.