SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2006SUBURBAN K2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2174 (WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEW 5 OF 5)TRANSMISSION CONTROL MODULE (TCM) (MT1)
2006 Chevrolet Suburban K2500, 6.0 U

Transmission Control Module (TCM) (MT1)

2006 Chevrolet Suburban K2500, 6.0 USECTION Transmission Control Module (TCM) (MT1)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Transmission Control Module (TCM) (MT1) Connector End View
GM1530595Courtesy of GENERAL MOTORS CORP.
Transmission Control Module (TCM) (MT1)

Pin Wire Color Circuit Function
1 0.5 BN 418 Torque Converter Clutch Pulse Width Modulated (TCC PWM) Solenoid Valve Control
2 0.5 L-GN 1222 1-2 Shift Solenoid Valve Control
3 0.35 OG/BK 1230 Automatic Transmission Input Speed Sensor (AT ISS) High Signal
4 - - Not Used
5 0.35 OG/BK 6399 Replicated TOS Signal
6 0.5 TN 2501 High Speed GMLAN Serial Data Bus - (CAN)
7 0.5 TN/WH 2500 High Speed GMLAN Serial Data Bus + (CAN)
8-10 - - Not Used
11 0.35 D-BU 5985 Accessory Wake Up Serial Data
12-14 - - Not Used
15 0.35 TN/BK 2500 High Speed GMLAN Serial Data Bus + (CAN)
16 0.5 L-GN/BK 822 Vehicle Speed Sensor (VSS) Low Signal
17 0.5 L-BU/WH 1229 Pressure Control (PC) Solenoid Valve Low Control
18 - - Not Used
19 0.35 TN 2501 High Speed GMLAN Serial Data Bus - (CAN)
20 0.5 YE/BK 1223 2-3 Shift Solenoid Valve Control
21-22 - - Not Used
23 0.35 GY 773 Transmission Range (TR) Switch Signal C
24 0.35 PK 1224 Transmission Fluid Pressure (TFP) Switch Signal A
25 - - Not Used
26 D-BU/WH 1231 Automatic Transmission Input Speed Sensor (AT ISS) Low Signal
27-28 - - Not Used
29 0.35 TN/WH 771 Transmission Range (TR) Switch Signal A
30 0.35 TN 2762 Low Reference
31 0.5 PK 2139 Ignition Voltage
32 0.5 RD/WH 1840 Battery Positive Voltage
33 0.35 OG 1226 Transmission Fluid Pressure (TFP) Switch Signal C
34 - - Not Used
35 0.5 YE/BK 1227 Transmission Fluid Temperature (TFT) Sensor Signal
36 - - Not Used
37 0.5 TN 2501 High Speed GMLAN Serial Data Bus - (CAN)
38 0.5 TN/WH 2500 High Speed GMLAN Serial Data Bus + (CAN)
39 0.35 WH 776 Transmission Range (TR) Switch Signal P
40 0.5 OG/BK 1228 Pressure Control (PC) Solenoid Valve High Control
41 0.5 PU/WH 821 Vehicle Speed Sensor (VSS) High Signal
42 0.5 L-BU/WH 6311 Brake Switch Signal
43 - - Not Used
44 D-BU 1225 Transmission Fluid Pressure (TFP) Switch Signal B
45 - - Not Used
46 0.35 YE 772 Transmission Range (TR) Switch Signal B
47-48 - - Not Used
49 0.8 BK/WH 451 Ground
Connector Part Information 
  • OEM: 15463921
  • Service: N/A
  • Description: 49-Way F Micro-64 GT 280 Series Sealed (BK)
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.

Shop Manual-Ready ToolsFree Quote CheckQuote 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.