2000 Chevrolet C3500 HD 6.5 F, AutomaticFACTORY OEM SERVICE PROCEDURE

Engine Controls

Accelerator Pedal Position (APP) Sensor

GM570216Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12065425
  • 10 Way F Metri-pack 150 Series (BLK)
Pin Wire Color Circuit No. Function
A BRN 1271 Low Reference
B PPL 1272 Low Reference
C LT BLU 1162 APP Sensor 2 Signal
D TAN 1274 5 Volt Reference
E YEL/BLK 1275 5 Volt Reference
F DK BLU 1161 APP Sensor 1 Signal
G WHT/BLK 1164 5 Volt Reference
H - - Not Used
J GRY 1273 Low Reference
K DK GRN 1163 APP Sensor 3 Signal
Crankshaft Position (CKP) Sensor

GM684807Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12110293
  • 3 Way F Metri-pack 150 Series (BLK)
Pin Wire Color Circuit No. Function
A YEL 573 CKP Sensor Signal
B PPL 452 Low Reference
C GRY 416 5 Volt Reference
Engine Coolant Temperature (ECT) Sensor

GM237066Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12162194
  • 2 Way F Metri-pack 150.2 Series P2S (BLK)
Pin Wire Color Circuit No. Function
A YEL 410 ECT Sensor Signal
B BLK 452 Low Reference
Fuel Pump

GM258174Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12010973
  • 2 Way M Weather-pack SHD Type (BLK)
Pin Wire Color Circuit No. Function
A BLK 150 Ground
B GRY 120 Fuel Pump Supply Voltage
Fuel Pump - Secondary

GM258174Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12010973
  • 2 Way M Weather-pack SHD Type (BLK)
Pin Wire Color Circuit No. Function
A BLK 150 Ground
B LT GRN 1058 Fuel Balance Pump Supply Voltage
Fuel Balance Pump Relay (Dual Tanks)

GM535912Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12129716
  • 4 Way F Metri-pack 280 Series (GRY)
Pin Wire Color Circuit No. Function
30 PNK 639 Ignition 1 Voltage
85 GRY 120 Fuel Pump Supply Voltage
86 LT GRN 497 Fuel Pump Relay Control - Secondary
87 LT GRN 1058 Fuel Balance Pump Supply Voltage
Fuel Solenoid Driver

GM697046Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12186568
  • 4 Way F Metri-pack 150 Series (BLK)
Pin Wire Color Circuit No. Function
A LT GRN 260 Fuel Injection Control
B BLK 491 Low Reference
C PNK 439 Ignition 1 Voltage
D RED 313 Injection Pump Timing Signal
Fuel Temperature Sensor

GM697039Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12052848
  • 6 Way F Metri-pack 150 Series (BLK)
Pin Wire Color Circuit No. Function
A GRY 474 5 Volt Reference
B BRN/WHT 633 CMP Sensor Signal
C ORN 1799 High Resolution Signal
D PNK/BLK 632 Low Reference
E YEL 1578 Fuel Temperature Signal
F PNK/BLK 632 Low Reference
Glow Plug Relay

GM62433Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12045636
  • 4 Way F Metri-pack 280 Series (MD GRY)
Pin Wire Color Circuit No. Function
A PNK 539 Ignition 1 Voltage
B YEL 505 Glow Plug Relay Control
C BLK 150 Ground
D - - Not Used
Intake Air Temperature (IAT) Sensor

GM646180Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12162198
  • 2 Way F Metri-pack 150.2 Series P2S (GRY)
Pin Wire Color Circuit No. Function
A TAN 472 IAT Sensor Signal
B BLK 452 Low Reference
Turbocharger Boost Sensor

GM280779Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12103771
  • 3 Way M Weather-pack TWR Type (WHT)
Pin Wire Color Circuit No. Function
A BLK 452 Low Reference
B LT GRN 432 MAP Sensor Signal
C GRY 416 5 Volt Reference
Turbocharger Wastegate Solenoid

GM635009Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12052641
  • 2 Way F Metri-pack 150 Series (BLK)
Pin Wire Color Circuit No. Function
A PNK 539 Ignition 1 Voltage
B YEL 258 Wastegate Solenoid Control
Vehicle Speed Sensor (VSS) - M/T

GM38554Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12124819
  • 2 Way F Metri-pack 280 Series (BLK)
Pin Wire Color Circuit No. Function
A PPL/WHT 821 VSS High Signal
B LT GRN/BLK 822 VSS Low Signal
Vehicle Speed Sensor (VSS) - A/T

GM237066Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12162194
  • 2 Way F Metri-pack 150.2 Series (BLK)
Pin Wire Color Circuit No. Function
A PPL/WHT 821 VSS High Signal
B LT GRN/BLK 822 VSS Low Signal
Vehicle Speed Sensor (VSS) Buffer

GM62467Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12066130
  • 9 Way F Micro-pack 100 Series (NAT)
Pin Wire Color Circuit No. Function
7 LT GRN/BLK 822 VSS Low Signal
8 BLK/WHT 451 Ground
9 PNK 39 Ignition 1 Voltage
10 YEL/BLK 1827 Vehicle Speed Signal
11 - - Not Used
12 PPL/WHT 821 VSS High Signal
13 BRN 437 Vehicle Speed Signal
14 DK GRN/WHT 817 Vehicle Speed Signal
15 DK GRN 389 Vehicle Speed Signal
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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