HVAC Control Module X1

2008 Pontiac Grand Prix BaseSECTION HVAC Control Module X1
WARNING: This page is about a different car, the 2008 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: HVAC Control Module X1 Connector End View
GM1664553Courtesy of GENERAL MOTORS CORP.
Connector Part Information 
  • OEM: 31410-1202
  • Service: 15126709
  • Description: 20-Way F USCAR 0.64 Series (BN)
Terminal Part Information 
  • Pins: 1, 4, 5, 15-19
  • Terminal/Tray: 7116-4618-02
  • Core/Insulation Crimp: P/P
  • Release Tool/Test Probe: See Terminal Repair Kit
Pin Wire Circuit Function
1 0.35 WH/BK 5515 Inside Air Temperature Sensor Assembly Control
2-3 - - Not Used
4 0.35 D-GN 734 Inside Air Temperature Sensor Signal
5 0.35 GY 1548 Passenger Sunload Sensor Signal
6-14 - - Not Used
15 0.35 L-BU/BK 590 Driver Sunload Sensor Signal
16 0.35 TN 516 Upper Left Air Temperature Sensor Signal
17 0.35 TN 517 Upper Right Air Temperature Sensor Signal
18 0.35 PK 2145 Air Temperature Switch Signal - Right (C69)
19 0.35 GY 2599 Auxiliary Mode Door Control (C69)
20 - - Not Used
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

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

Affiliate disclosure: We may earn a commission at no extra cost to you.

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.