GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Cadillac
🢒
2005
🢒
CTS
🢒
Body
🢒
Instrument Panel, Gages, and Console
🢒 Engine Controls Schematics
Figure
1:
Power, Ground, Serial Data, DIC and Indicator
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Engine Data Sensors - 5 volt and Low References Busses
Engine Controls Schematic Icons
Underhood Fuse Block B+ Bus - 2 of 2
Underhood Fuse Block DIM/ALDL, VOLT CHECK, FLASHER, CCP, EGM/TCM and ABS Fuses
Ignition Switch - 2 of 2
Ignition Switch - 2 of 2
Underhood Fuse Block STARTER Relay, IGN 1 Relay, HTR VLV/CLTCH and TCM/IPC Fuses
Underhood Fuse Block STARTER Relay, IGN 1 Relay, HTR VLV/CLTCH and TCM/IPC Fuses
G104 - 1 of 2
Ignition Switch - 1 of 2
Engine Data Sensors - Throttle Actuator Control (TAC) System
Class 2 Serial Data Bus - LHD - 1 of 2
Class 2 Serial Data Bus - LHD - 2 of 2
G140, G141 and G142 (L56)
G140, G141 and G142 (L56)
G140, G141 and G142 (L56)
G104 - 1 of 2
Figure
2:
Engine Data Sensors - 5-Volt and Low Reference Buses
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Engine Data Sensors - MAP, ECT, MAF and IAT Sensors
Power, Ground, Serial Data, DIC and Indicator
Engine Controls Schematic Icons
Figure
3:
Engine Data Sensors - MAP, ECT, MAF and IAT Sensors
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Engine Data Sensors - Heated Oxygen Sensors (HO2S)
Engine Data Sensors - 5 volt and Low References Busses
Engine Controls Schematic Icons
Underhood Fuse Block B+ Bus - 2 of 2
Underhood Fuse Block STARTER Relay, IGN 1 Relay, HTR VLV/CLTCH and TCM/IPC Fuses
G104 - 1 of 2
Underhood Fuse Block WASH NOZ, STRG CTLS and IGN MOD/MAF Fuses
G104 - 1 of 2
G140, G141 and G142 (L56)
Figure
4:
Engine Data Sensors - Heated Oxygen Sensors (HO2S)
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Engine Data Sensors - Throttle Actuator Control (TAC) System
Engine Data Sensors - MAP, ECT, MAF and IAT Sensors
Engine Controls Schematic Icons
Module Power, Ground, Serial Data, and MIL
Underhood Fuse Block B+ Bus - 2 of 2
Underhood Fuse Block B+ Bus - 2 of 2
Underhood Fuse Block PRE 02/CAM Fuse
Figure
5:
Engine Data Sensors - Throttle Actuator Control (TAC) System
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Ignition Controls - Odd Ignition Coils
Engine Data Sensors - Heated Oxygen Sensors (HO2S)
Engine Controls Schematic Icons
Underhood Fuse Block STARTER Relay, IGN 1 Relay, HTR VLV/CLTCH and TCM/IPC Fuses
Underhood Fuse Block STARTER Relay, IGN 1 Relay, HTR VLV/CLTCH and TCM/IPC Fuses
Underhood Fuse Block STARTER Relay, IGN 1 Relay, HTR VLV/CLTCH and TCM/IPC Fuses
BPP Sensor, Switches and Indicators 5.7L
Cruise Control System - 5.7L (L56)
Steering Wheel Controls - 5.7L (L56)
G140, G141 and G142 (L56)
Figure
6:
Ignition Controls - Odd Ignition Coils
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Ignition Controls - Even Ignition Coils
Engine Data Sensors - Throttle Actuator Control (TAC) System
Engine Controls Schematic Icons
Module Power, Ground, Serial Data, and MIL
Underhood Fuse Block ODD INJ/COIL Fuse
Underhood Fuse Block ODD INJ/COIL Fuse
G140, G141 and G142 (L56)
Figure
7:
Ignition Controls - Even Ignition Coils
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Ignition Controls - Knock, CKP and CMP Sensors
Ignition Controls - Odd Ignition Coils
Engine Controls Schematic Icons
Module Power, Ground, Serial Data, and MIL
Underhood Fuse Block EVEN INJ/COIL Fuse
Underhood Fuse Block EVEN INJ/COIL Fuse
G140, G141 and G142 (L56)
Figure
8:
Ignition Controls - Knock, CKP and CMP Sensors
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Fuel Controls - Fuel Injectors, Fuel Pump and Sender Assembly
Ignition Controls - Even Ignition Coils
Engine Controls Schematic Icons
Figure
9:
Fuel Controls - Fuel Injectors and Fuel Pump and Sender Assembly
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Fuel Controls - EVAP Controls
Ignition Controls - Knock, CKP and CMP Sensors
Engine Controls Schematic Icons
Module Power, Ground, Serial Data, and MIL
Underhood Fuse Block ODD INJ/COIL Fuse
Underhood Fuse Block B+ Bus - 2 of 2
Right Rear Fuse Block B+ Bus
G401
Gages - 5.7L (L56)
Figure
10:
Fuel Controls - EVAP Controls
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Controlled/Monitored Subsystem References
Fuel Controls - Fuel Injectors, Fuel Pump and Sender Assembly
Engine Controls Schematic Icons
Module Power, Ground, Serial Data, and MIL
Underhood Fuse Block Cooling Fan Fuses/Relays, MAIN Relay, ECM and TOS Fuses
Underhood Fuse Block Cooling Fan Fuses/Relays, MAIN Relay, ECM and TOS Fuses
Right Rear Fuse Block DR MOD PWR Circuit Breaker, CANISTER VENT, RIM/IGN SW, R FRT HTD SEAT MOD, and POWER SOUNDER Fuses
Engine Data Sensors - 5 volt and Low References Busses
Figure
11:
Controlled/Monitored Subsystem References
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Fuel Controls - EVAP Controls
Engine Controls Schematic Icons
Starting System - 2.8L/3.6L (LP1/LY7)
BPP Sensor, Switches and Indicators - 2.8L/3.6L (LP1/LY7)
Cooling Fans 5.7L (L56)
Engine OIl Pressure (EOP) Sensor, Engine Oil Level/Temperature Sensor, TFT and Indicator
A/C Compressor Controls 5.7L
Manual Transmission (M12)