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HOMESERVICE MANUALSCHEVROLET2006SUBURBAN C1500, 5.3 ZREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 676 (ENGINE CONTROLS - 6.6L - INTRODUCTION (2 OF 2))COMPONENT LOCATORENGINE CONTROL MODULE (ECM) CONNECTORSENGINE CONTROL MODULE (ECM) - C1
2006 Chevrolet Suburban C1500, 5.3 Z

Engine Control Module (ECM) - C1

2006 Chevrolet Suburban C1500, 5.3 ZSECTION Engine Control Module (ECM) - C1
WARNING: This page is about a different car, the 2006 GMC Sierra, 2006 GMC Cab & Chassis Sierra, 2006 Chevrolet Silverado, and 2006 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Engine Control Module (ECM) - C1

GM1544242Courtesy of GENERAL MOTORS CORP.
Connector Part Information 
  • OEM:15438366
  • Service: 89046933
  • Description: 96-Way F Sealed (BK)
Pin  Wire Color  Circuit No.  Function 
1 OG 5421 Injector Positive Voltage Control Group 1
2 D-BU/WH 878 Fuel Injector 8 Control
3 RD/BK 877 Fuel Injector 7 Control
4-5 - - Not Used
6 OG/BK 469 Low Reference
7 PU 806 Crank Voltage
8 YE 2522 PTO Engage Signal
9 BN 1174 Oil Level Switch Signal
10 GY/BK 87 Cruise Control Resume/Accel Switch Signal
11 GY/BK 6272 Low Reference
12 GY 2704 5-Volt Reference
13 TN 5928 5-Volt Reference
14 - - Not Used
15 GY 2705 5-Volt Reference
16-17 - - Not Used
18 YE 492 MAF Sensor Signal
19 L-GN 432 Turbocharger Boost Sensor Signal
20 YE 5947 Turbocharger Vane Position Sensor Signal
21 L-BU 1162 APP Sensor 2 Signal
22 - - Not Used
23 BK 2755 Low Reference
24 PU/WH 2530 Fuel Pressure Regulator Solenoid Supply Voltage
25 PK Injector Positive Voltage Control Group 4 Fuel Injector Supply Voltage
26 YE/BK 846 Fuel Injector 6 Control
27 PK/BK 1746 Fuel Injector 3 Control
28-29 - - Not Used
30 OG/BK 2919 Low Reference
31 L-BU 494 Engine Shutoff Signal (PTO w/A/T)
32 GY 48 CPP Switch Signal
33 - - Not Used
34 D-BU 84 Cruise Control Set/Coast Switch Signal
35-36 - - Not Used
37 GY 2703 5-Volt Reference
38 TN 1274 5-Volt Reference
39 TN 2917 5-Volt Reference
40 PU/WH 6270 5-Volt Reference
41 RD 6259 5-Volt Reference
42 TN 472 IAT Sensor Signal
43 - - Not Used
44 TN/WH 332 Oil Pressure Sensor Signal
45-46 - - Not Used
47 GY 720 Low Reference
48 D-BU 5930 Turbocharger Vane Position Control Solenoid Valve Control
49 PU 5423 Injector Positive Voltage Control Group 3
50 BK/WH 845 Fuel Injector 5 Control
51 L-BU/BK 844 Fuel Injector 4 Control
52 - - Not Used
53 YE/BK 6120 Low Reference
54 - - Not Used
55 GY/BK 2931 Low Reference
56 D-BU/WH 6265 CMP Sensor Signal
57 GY/BK 1694 4WD Low Signal
58 L-GN 1478 Coolant Level Switch Signal
59 - - Not Used
60 L-GN 488 PTO On Switch Signal
61 GY 397 Cruise Control ON Switch Signal
62 BK 552 Low Reference
63 OG/BK 5929 Low Reference
64 - - Not Used
65 L-BU 6118 IAT Sensor 2 Signal
66 - - Not Used
67 BN/WH 5763 EGR Valve Position Signal
68 YE 410 ECT Sensor Signal
69-70 - - Not Used
71 YE/BK 625 Starter Enable Relay Control
72 YE 2834 Fuel Pressure Regulator Solenoid Control
73 YE 5422 Injector Positive Voltage Control Group 2
74 BK 1744 Fuel Injector 1 Control
75 L-GN/BK 1745 Fuel Injector 2 Control
76 PK 1039 Ignition 1 Voltage
77 OG 440 Battery Positive Voltage
78 PU 1272 Low Reference
79 WH/BK 6271 CKP Sensor Signal
80-81 - - Not Used
82 BK/WH 1695 Axle Switch Signal
83 - - Not Used
84 GY 1524 Backup Lamp Supply Voltage
85 YE/BK 508 Water In Fuel Indicator Control
86 BK 2754 Low Reference
87 - - Not Used
88 BN 6266 Low Reference
89-91 - - Not Used
92 YE 2918 FRP Sensor Signal
93-95 - - Not Used
96 WH 5931 Low Reference
RENDER: 1.0x

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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.