2004 Pontiac Aztek Base, FWDFACTORY OEM SERVICE PROCEDURE

Cellular Communication Component Views

WARNING: This page is about a different car, the 2004 Chevrolet Monte Carlo and 2004 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: OnStar Subsystem
GM772332Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Roof Harness
2 OnStar Button Assembly
3 Inside Rearview Mirror
4 Cellular Antenna
5 C393
6 Navigation Antenna
7 Vehicle Communication Interface Module (VCIM)
8 C395
9 C392
Fig 2: Above Left Side of Package Shelf
GM695155Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 C395
2 C393
3 Cellular Antenna Coax Connector
4 C392
5 Main Body Wiring Harness
Fig 3: Vehicle Communication Interface Module (VCIM), Rear of Left Rear Wheelhouse
GM924921Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Vehicle Communication Interface Module (VCIM)
2 Wheelhouse-LR
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

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.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.