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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 8 (CELLULAR SYSTEM, ENTERTAINMENT SYSTEM, AND NAVIGATION SYSTEM)REPAIR INSTRUCTIONSCOAXIAL CABLE REPLACEMENT - NAVIGATION AND CELLULAR TELEPHONE ANTENNA
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Coaxial Cable Replacement - Navigation and Cellular Telephone Antenna

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Coaxial Cable Replacement - Navigation and Cellular Telephone Antenna
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: View Of Navigation/Cellular Coaxial Cable
GM1722651Courtesy of GENERAL MOTORS CORP.
Coaxial Cable Replacement - Navigation and Cellular Telephone Antenna

Callout Component Name

Preliminary Procedure

  1. Lower the front of the headliner. Refer to Headlining Trim Panel Replacement (Avalanche/Escalade EXT w/CF5 and U42) or Headlining Trim Panel Replacement (Avalanche/Escalade EXT w/CF5 w/o U42) or Headlining Trim Panel Replacement (Avalanche w/CJ2 w/o CF5 and U42) or Headlining Trim Panel Replacement (Avalanche/Escalade EXT w/CJ3) or Headlining Trim Panel Replacement (Avalanche/Escalade EXT w/U42 w/o CF5) or Headlining Trim Panel Replacement (LWB w/CF5 and U42) or Headlining Trim Panel Replacement (LWB w/CF5 w/o U42) or Headlining Trim Panel Replacement (LWB w/CJ2) or Headlining Trim Panel Replacement (LWB w/CJ3) or Headlining Trim Panel Replacement (LWB w/U42 w/o CF5) or Headlining Trim Panel Replacement (SWB w/CF5 and U42) or Headlining Trim Panel Replacement (SWB w/CF5 w/oU42) or Headlining Trim Panel Replacement (SWB w/CJ3) or Headlining Trim Panel Replacement (SWB w/o CF5 and U42) or Headlining Trim Panel Replacement (SWB w/U42 w/o CF5) .
  2. Remove the upper instrument panel (I/P) defroster grille. Refer to Instrument Panel Upper Trim Panel with Windshield Defroster Nozzle Grille Replacement (Cadillac) or Instrument Panel Upper Trim Panel with Windshield Defroster Nozzle Grille Replacement (Except Cadillac) .
  3. Remove the instrument panel compartment door. Refer to Instrument Panel Compartment Door Replacement (Cadillac) or Instrument Panel Compartment Door Replacement (Except Cadillac) .
  4. Remove the interface communication module. Refer to Communication Interface Module Replacement (Cadillac)  or Communication Interface Module Replacement (Except Cadillac) .
1 Navigation/Cellular Coaxial Cable
Tip: 
  1. If the coaxial antenna cable is taped in the wiring harness then just cut the ends off at the interface communication module and the antenna connection and route the new harness next to the old and use tie straps as needed to secure routing.
  2. If needed use a piece of mechanics wire or suitable equivalent to route new cable through windshield pillar and I/P area.
RENDER: 1.0x

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When to See a Mechanic

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

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