GM Service Manual Online
For 1990-2009 cars only
Figure 1:

4.3L VCM, DLC, FUSE, MIL, EBCM


Object Number: 52617  Size: FS
Engine Controls Components
4.3L VCM, CKP, CMP, IC, COIL
OBD II Symbol Description Notice
Engine Controls Schematic References
Engine Controls Schematic References
Engine Controls Schematic References
Engine Controls Schematic References
Engine Controls Schematic References
Engine Controls Schematic References
Engine Controls Schematic References
Engine Controls Schematic References
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Engine Controls Schematic References
Engine Controls Schematic References
Engine Controls Schematic References
Engine Controls Schematic References
Engine Controls Schematic References
Figure 2:

4.3L VCM, CKP, CMP, IC, COIL


Object Number: 52636  Size: FS
Engine Controls Components
4.3L VCM, FUSE-RELAY, FUEL PUMP
4.3L VCM, DLC, FUSE, MIL, EBCM
OBD II Symbol Description Notice
Engine Controls Schematic References
Engine Controls Schematic References
Engine Controls Schematic References
Engine Controls Schematic References
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Engine Controls Schematic References
Figure 3:

4.3L VCM, FUSE-RELAY, FUEL PUMP


Object Number: 52651  Size: FS
Engine Controls Components
4.3L VCM, FUEL INJECTORS
4.3L VCM, CKP, CMP, IC, COIL
OBD II Symbol Description Notice
Engine Controls Schematic References
Handling Electrostatic Discharge Sensitive Parts Notice
Engine Controls Schematic References
Figure 4:

4.3L VCM, FUEL INJECTORS


Object Number: 52661  Size: FS
Engine Controls Components
4.3L VCM, SENSORS
4.3L VCM, FUSE-RELAY, FUEL PUMP
OBD II Symbol Description Notice
Engine Controls Schematic References
Handling Electrostatic Discharge Sensitive Parts Notice
Engine Controls Schematic References
Figure 5:

4.3L VCM, SENSORS


Object Number: 52679  Size: FS
Engine Controls Components
4.3L VCM, MAF, EVAP, EGR
4.3L VCM, FUEL INJECTORS
OBD II Symbol Description Notice
4.3L VCM, MAF, EVAP, EGR
4.3L VCM, MAF, EVAP, EGR
4L60E VCM, FUSES, VSS
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Figure 6:

4.3L VCM, MAF, EVAP, EGR


Object Number: 52684  Size: FS
Engine Controls Components
4.3L VCM, FUSE-RELAY, HO2S
4.3L VCM, SENSORS
OBD II Symbol Description Notice
Engine Controls Schematic References
4.3L VCM, SENSORS
4.3L VCM, SENSORS
Engine Controls Schematic References
Handling Electrostatic Discharge Sensitive Parts Notice
Engine Controls Schematic References
Figure 7:

4.3L VCM, FUSE-RELAY, HO2S


Object Number: 52698  Size: FS
Engine Controls Components
4.3L HO2S3 BANK 1
4.3L VCM, MAF, EVAP, EGR
OBD II Symbol Description Notice
Engine Controls Schematic References
Engine Controls Schematic References
Handling Electrostatic Discharge Sensitive Parts Notice
Engine Controls Schematic References
Figure 8:

4.3L VCM, I/C, IAC


Object Number: 52705  Size: FS
Engine Controls Components
4.3L VCM, CRUISE CONTROL, VSS, EBCM
4.3L HO2S3 BANK 1
OBD II Symbol Description Notice
Engine Controls Schematic References
Engine Controls Schematic References
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Engine Controls Schematic References
Engine Controls Schematic References
Figure 9:

4.3L VCM, CRUISE CONTROL, VSS, EBCM


Object Number: 52711  Size: FS
Engine Controls Components
4.3L W/4L60E
4.3L VCM, I/C, IAC
OBD II Symbol Description Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Figure 10:

4.3L W/4L60E


Object Number: 52718  Size: FS
Engine Controls Components
4.3L W/ 4L60E, BRAKE SWITCH
4.3L VCM, CRUISE CONTROL, VSS, EBCM
OBD II Symbol Description Notice
4.3L VCM, SENSORS
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Figure 11:

4.3L W/ 4L60E, BRAKE SWITCH


Object Number: 52722  Size: FS
Engine Controls Components
4.3L VCM, A/C SYSTEM
4.3L W/4L60E
OBD II Symbol Description Notice
Engine Controls Schematic References
Engine Controls Schematic References
Engine Controls Schematic References
Engine Controls Schematic References
Handling Electrostatic Discharge Sensitive Parts Notice
Engine Controls Schematic References
Figure 12:

4.3L VCM, A/C SYSTEM


Object Number: 52729  Size: FS
Engine Controls Components
4.3L W/ 4L60E, BRAKE SWITCH
OBD II Symbol Description Notice
Engine Controls Schematic References
Engine Controls Schematic References
Engine Controls Schematic References
Engine Controls Schematic References
Engine Controls Schematic References
Engine Controls Schematic References
Engine Controls Schematic References
Handling Electrostatic Discharge Sensitive Parts Notice
Engine Controls Schematic References
Engine Controls Schematic References
Engine Controls Schematic References
Figure 13:

4.3L HO2S3 BANK 1


Object Number: 65640  Size: FS
Engine Controls Components
4.3L VCM, I/C, IAC
4.3L VCM, FUSE-RELAY, HO2S
OBD II Symbol Description Notice
Engine Controls Schematic References
Engine Controls Schematic References
Handling Electrostatic Discharge Sensitive Parts Notice
Engine Controls Schematic References