2004 Chevrolet Malibu BaseFACTORY OEM SERVICE PROCEDURE

Powertrain Control Module (PCM) Connector End Views

Powertrain Control Module (PCM) C1 Connector End View

GM1228485Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15430210
  • 56-Way F Micro-Pack 64 Series Sealed (BU)
Pin Wire Color Circuit No. Function
1 TN/BK 2500 High Speed GMLAN Serial Data (+)
2 TN 2501 High Speed GMLAN Serial Data (-)
3-5 - - Not Used
6 D-GN/WH 459 A/C Compressor Clutch Relay Control
7 BN 1271 Low Reference
8 TN 1274 5-Volt Reference
9 - - Not Used
10 D-GN 335 Low Speed Cooling Fan Relay Control
11 - - Not Used
12 PU 1589 Fuel Level Sensor Signal
13 PK/BK 5290 Ignition 1 Voltage
14 - - Not Used
15 PU 1807 Class 2 Serial Data
16 - - Not Used
17 GY 2700 5-Volt Reference
18 BN 4 Accessory Voltage
19 PK 639 Ignition 1 Voltage
20 RD/WH 540 Battery Positive Voltage
21 - - Not Used
22 WH 1310 EVAP Canister Vent Solenoid Control
23 - - Not Used
24 D-GN 890 Fuel Tank Pressure Sensor Signal
25 - - Not Used
26 OG/BK 380 A/C Refrigerant Pressure Sensor Signal
27 D-BU 1161 APP Sensor 1 Signal
28 - - Not Used
29 OG/BK 1057 Low Reference
30 WH/BK 1164 5-Volt Reference
31 - - Not Used
32 WH 17 Stop Lamp Switch Signal
33-36 - - Not Used
37 D-GN/WH 465 Fuel Pump Relay Control
38 BN 5069 Main Relay Control
39 - - Not Used
40 BN/WH 419 MIL Control
41 L-BU 1162 APP Sensor 2 Signal
42 - - Not Used
43 PU 1272 Low Reference
44 - - Not Used
45 PU 5526 Tap Up/Tap Down Switch Signal
46 - - Not Used
47 GY 705 5-Volt Reference
48 YE 447 Starter Relay Coil Control
49-50 - - Not Used
51 D-BU 473 High Speed Cooling Fan Relay Control
52-53 - - Not Used
54 PU/WH 1035 Starter Relay Coil Supply Voltage
55 OG/BK 1057 Low Reference
56 TN 5514 Low Reference
Powertrain Control Module (PCM) C2 Connector End View

GM1335545Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15430225
  • 73-Way F Micro 64 Series Sealed (BK)
Pin Wire Color Circuit No. Function
1 OG 225 Generator Turn On Signal
2 D-GN 485 TP Sensor 1 Signal
3-5 - - Not Used
6 GY 2701 5-Volt Reference
7 PU 486 TP Sensor 2 Signal
8 GY 2704 5-Volt Reference
9 L-BU/BK 1688 5-Volt Reference
10-16 - - Not Used
17 YE 573 Crankshaft Position Sensor Signal (1)
18 PU 574 Crankshaft Position Sensor Low Reference (1)
19 - - Not Used
20 OG/BK 469 CKP Sensor B Signal
21-24 - - Not Used
25 TN/WH 3121 HO2S Low Signal Bank 1 Sensor 2
26 BN/WH 633 Camshaft Position Signal
27-31 - - Not Used
32 TN/WH 3111 HO2S Low Reference Bank 1 Sensor 1
33 TN 1744 Fuel Injector 1 Control
34 - - Not Used
35 YE 410 ECT Sensor Signal
36 TN/WH 1704 Low Reference
37 L-GN 432 MAP Sensor Signal
38 - - Not Used
39 TN 2752 Low Reference
40 WH 423 IC Timing Control
41 YE 492 MAF Sensor Signal
42 - - Not Used
43 GY/WH 3122 HO2S Heater Low Control Sensor 1
44 - - Not Used
45 GY 23 Generator Field Duty Cycle Signal
46 PU 3120 HO2S High Signal Sensor 2
47 - - Not Used
48 PU/WH 3110 HO2S Reference Voltage Sensor 1
49-50 - - Not Used
51 TN 472 IAT Sensor Signal
52 TN 2761 Low Reference
53 PK/BK 1746 Fuel Injector 3 Control
54 L-GN/BK 1745 Fuel Injector 2 Control
55 L-BU/BK 844 Fuel Injector 4 Control
56-57 - - Not Used
58 GY/WH 3113 HO2S Heater Low Control Sensor 1
59 OG 406 IC Timing Control B
60-63 - - Not Used
64 TN/BK 2760 Low Reference
65 BN 582 TAC Motor Control 2
66 YE 581 TAC Motor Control 1
67 - - Not Used
68 D-BU 496 Knock Sensor Signal
69 GY 1716 Low Reference
70-72 - - Not Used
73 BK/WH 451 Ground
Powertrain Control Module (PCM) C3 Connector End View

GM1335548Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15430209
  • 56-Way F Micro 64 Series Sealed (GY)
Pin Wire Color Circuit No. Function
1 - - Not Used
2 GY 773 Transmission Range Switch Signal C
3-5 - - Not Used
6 OG/BK 1228 PC Solenoid Valve High Control (Sol. A)
7 YE/BK 1227 TFT Sensor Signal
8-10 - - Not Used
11 OG/BK 1230 AT ISS High Signal
12-14 - - Not Used
15 TN/BK 231 Oil Pressure Switch Signal
16 - - Not Used
17 TN 2762 Low Reference
18-19 - - Not Used
20 TN/WH 771 Transmission Range Switch Signal A
21-28 - - Not Used
29 YE 657 Transmission Fluid Pressure Sensor Signal
30 OG 1226 Transmission Fluid Pressure Switch Signal C
31-32 - - Not Used
33 L-GN 1222 Shift Solenoid Valve 1 High Control
34 - - Not Used
35 YE/BK 1223 Shift Solenoid Valve 2 High Control
36 - - Not Used
37 D-GN/WH 428 EVAP Canister Purge Solenoid Control
39 BN 418 TCC PWM Solenoid Valve Control
40-42 - - Not Used
43 D-BU 1225 Transmission Fluid Pressure Switch Signal B
44 PU 401 Vehicle Speed Sensor Low Reference
45 YE 400 Vehicle Speed Sensor Signal
46-47 - - Not Used
48 L-BU/WH 1229 PC Solenoid Valve Low Control (Sol. A)
49 D-BU/WH 1231 A/T ISS Low Signal
50 YE 772 Transmission Range Switch Signal B
51 - - Not Used
52 WH 776 Transmission Range Switch Signal P
53-56 - - Not Used
Factory Service Tools

Use the Manual With the Right Hardware

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

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote 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.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.