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HOMESERVICE MANUALSBUICK2006TERRAZA CXL, 3.5 L, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 253 (HVAC SYSTEM - MANUAL)COMPONENT LOCATORHVAC CONNECTORSHVAC CONTROL MODULE C2
2006 Buick Terraza CXL, 3.5 L, AWD

HVAC Control Module C2

2006 Buick Terraza CXL, 3.5 L, AWDSECTION HVAC Control Module C2
WARNING: This page is about a different car, the 2007 Chevrolet Monte Carlo and 2007 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: HVAC Control Module C2 Connector End Views
GM1664552Courtesy of GENERAL MOTORS CORP.
HVAC Control Module C2 Connector Parts Information

Connector Part Information 
  • OEM: 15491304
  • Service: See Catalog
  • Description: 20-Way F Receptacle 0.64 (GY)
Terminal Part Information 
  • Terminal/Tray: 7116-4618-02/14
  • Core/Insulation Crimp: P/P
  • Release Tool/Test Probe: J-38125-215/J-35616-64B (L-BU)
HVAC Control Module C2 Connector Terminal Identification

Pin Wire Color Circuit No. Function
1-3 - - Not Used
4 GY/BK 754 Blower Motor Speed Control
5 L-GN 2275 Mode Door Control A
6 YE 1791 Left Air Temperature Door Control A (CJ3)
7 PK/WH 1648 Recirculation Door Control A
8 D-BU 1646 Air Temperature Door Control A
9-14 - - Not Used
15 TN 2273 Mode Door Control B
16 D-BU/WH 1199 Left Air Temperature Door Control B (CJ3)
17 L-GN/BK 1647 Recirculation Door Control B
18 WH/BK 1236 Air Temperature Door Control B
19-20 - - Not Used
RENDER: 1.0x

NO RELATED

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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.