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HOMESERVICE MANUALSCHEVROLET2008HHR SS, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSELECTRICAL COMPONENT LOCATIONSWIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT VIEWS & COMPONENT CONNECTOR END VIEWSCOMPONENT CONNECTOR END VIEWSTRANSMISSION CONTROL MODULE (TCM) (MN5)
2008 Chevrolet HHR SS, Standard

Transmission Control Module (TCM) (MN5)

2008 Chevrolet HHR SS, StandardSECTION Transmission Control Module (TCM) (MN5)
Fig 1: Transmission Control Module (TCM) (MN5) Connector End View
GM1372727Courtesy of GENERAL MOTORS CORP.
Transmission Control Module (TCM) (MN5)

Pin Wire Circuit Function
1 0.35 TN/BK 422 Torque Converter Clutch Pulse Width Modulated (TCC PWM) Solenoid Valve Control
2 0.35 L-GN 1222 1-2 Shift Solenoid (SS) Valve Control
3 0.35 OG/BK 1230 Input Speed Sensor (ISS) High Signal
4-5 - - Not Used
6 0.35 TN 2501 High Speed GMLAN Serial Data Bus - (CAN)
7 0.35 TN/BK 2500 High Speed GMLAN Serial Data Bus + (CAN)
8 - - Not Used
9 0.35 YE 657 TCC Release Switch Signal
10 - - Not Used
11 0.35 BN 4 Accessory Voltage
12-15 - - Not Used
16 0.35 PU 401 Output Speed Sensor (OSS) Low Signal
17 0.35 L-BU/WH 1229 Pressure Control (PC) Solenoid Valve Low Control
18-19 - - Not Used
20 0.35 YE/BK 1223 2-3 SS Valve Control
21-22 - - Not Used
23 0.35 GY 773 Transmission Range Switch Signal C
24-25 - - Not Used
26 0.35 D-BU/WH 1231 ISS Low Signal
27-28 - - Not Used
29 0.35 TN/WH 771 Transmission Range Switch Signal A
30 0.35 TN 2762 Transmission Fluid Temperature (TFT) Sensor Low Reference
31 0.35 PK 1039 Ignition 1 Voltage
32 0.5 RD/WH 840 Battery Positive Voltage
33 0.35 OG 1226 Transmission Fluid Pressure (TFP) Switch Signal C
34 - - Not Used
35 0.35 YE/BK 1227 TFT Sensor Signal
36 - - Not Used
37 0.35 TN 2501 High Speed GMLAN Serial Data Bus - (CAN)
38 0.35 TN/BK 2500 High Speed GMLAN Serial Data Bus + (CAN)
39 0.35 WH 776 Transmission Range Switch Signal P
40 0.35 OG/BK 1228 PC Solenoid Valve High Control
41 0.35 YE 400 OSS High Signal
42 0.35 L-BU 20 Stop Lamp Switch Signal
43 - - Not Used
44 0.35 D-BU 1225 TFP Switch Signal B
45 - - Not Used
46 0.35 YE 772 Transmission Range Switch Signal B
47-48 - - Not Used
49 0.35 BK/WH 451 Ground
Connector Part Information 
  • OEM: 15463921
  • Service: Non-Serviceable
  • Description: 49-Way F Micro-64 GT 280 Series Sealed (BK)

Terminal Part Information 
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit
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.