2006 GMC Sierra 1500, 2D Pickup, 5.3 Z, 4WD, Part TimeFACTORY OEM SERVICE PROCEDURE

Engine Control Module Connector End View (ECM) - C2

Engine Control Module (ECM) - C2

GM1544260Courtesy of GENERAL MOTORS CORP.
Connector Part Information 
  • OEM: 15462694
  • Service: See Catalog
  • Description: 58-Way F Sealed (BK)
Pin  Wire Color  Circuit No.  Function 
1 PK 339 Ignition 1 Voltage
2 BK/WH 451 Ground
3 PK 339 Ignition 1 Voltage
4 BK/WH 451 Ground
5 PK 339 Ignition 1 Voltage
6 BK/WH 451 Ground
7-8 - - Not Used
9 D-GN 1049 Class 2 Serial Data
10-11 - - Not Used
12 D-GN/WH 465 Fuel Pump Relay Control
13 BK 2751 Low Reference
14 - - Not Used
15 WH/BK 1164 5-Volt Reference
16 D-BU 507 Wait to Start Indicator Control
17 - - Not Used
18 PU 2562 PTO Control (PTO)
19 GY/BK 2219 ECM Relay Control
20 - - Not Used
21 PK 439 Ignition 1 Voltage
22 L-BU 1320 CHMSL Supply Voltage
23 BN 25 Charge Indicator Control
24 BN 2524 Generator 2 Turn On Signal (8X5/YF2)
25-26 - - Not Used
27 GY 2700 5-Volt Reference
28 - - Not Used
29 BN 1271 Low Reference
30 BN/WH 419 MIL Control
31 D-GN/WH 459 A/C Compressor Clutch Relay Control
32 - - Not Used
33 OG/BK 5764 EGR Motor High Control
34 BK 470 Low Reference
35 RD/BK 380 A/C Refrigerant Pressure Sensor Signal
36 PU/WH 1589 Fuel Level Sensor Signal - Primary
37 - - Not Used
38 GY 23 Generator Field Duty Cycle Signal
39 OG/BK 1786 Park/Neutral Signal (MW7)
40 PU 420 TCC Brake Switch/Cruise Control Release Switch Signal
41 - - Not Used
42 D-GN/WH 817 Vehicle Speed Signal
43 - - Not Used
44 TN 2501 High Speed GMLAN Serial Data Bus -
45 PU/WH 821 VSS High Signal (ML6)
YE 400 VSS High Signal (MW7)
46 L-GN/BK 5746 EGR Motor Low Control
47 BN 6062 Low Reference
48 YE 1578 Fuel Temperature Signal
49 D-BU 1161 APP Sensor 1 Signal
50 D-BU 1936 Fuel Level Sensor Signal - Secondary (Except NQZ)
51-53 - - Not Used
54 YE/BK 1827 Vehicle Speed Signal
55 WH 121 Engine Speed Signal
56 PK 1020 Ignition 0 Voltage
57 TN/WH 2500 High Speed GMLAN Serial Data Bus +
58 L-GN/BK 822 VSS Low Signal (ML6)
Factory Service Tools

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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.

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