STARTING/CHARGING – GMC Sierra 3500 HD 2008 – SYSTEM WIRING DIAGRAMS

STARTING/CHARGING

4.3L VIN X

4.3L VIN X, Charging Wiring Diagram for GMC Sierra 3500 HD 2008

List of elements for 4.3L VIN X, Charging Wiring Diagram for GMC Sierra 3500 HD 2008:

• 10 series
• 175a
• 4.3l
• Battery current sensor (right rear of engine compt)
• Body control module (bcm) (lower left side of dash)
• Charge ind sig
• Charge indicator
• Computer data lines system
• Current sply
• Data bus +
• Data bus -
• Driver information center (dic)
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 4.3l
• Fuse holder (right side of firewall)
• G101 (on lower right radiator support)
• G103 (on front of right cylinder head)
• Generator
• Generator sig
• Hot at all times
• Ign
• Instrument panel cluster
• Ipc fuse 46 10a
• Logic
• Low ref
• Mega fuse (right rear of engine compt)
• Mega fuse 175a
• Pnk
• Power distribution system
• Red
• Right battery
• Sens sig
• Serial data
• Tan
• Underhood fuse block (left side of engine compt)
• Volt

4.3L VIN X, Starting Wiring Diagram for GMC Sierra 3500 HD 2008

List of elements for 4.3L VIN X, Starting Wiring Diagram for GMC Sierra 3500 HD 2008:

• (on front of right cylinder head) (6.6l) g103
• 175a
• 4 speed a/t
• 4.3l
• 6 speed a/t
• 6.6l
• Acc
• Allison transmission 6 speed a/t
• Automatic transmission
• Automatic transmission fluid pressure (tfp) manual valve position switch
• Automatic transmission internal mode switch (ims)
• Battery
• Body control module (bcm) (lower left side of dash)
• Computer data lines system
• Control solenoid valve assembly
• Data bus +
• Data bus -
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 4.3l
• Fuse holder (right side of firewall)
• G101 (on lower right radiator support)
• G102 (except 4.3l) (on lower left front of engine)
• G103 (except 4.3l) (on front of right cylinder head)
• G103 (on front of right cylinder head)
• G106 (4.3l) (right rear of engine)
• G107 (4.3l) (top left rear of engine)
• Ign
• Ignition switch
• Internal mode switch
• J105
• J106
• J144
• Lock
• Mega fuse (right rear of engine compt)
• Mega fuse 175a
• Park/ neutral position (pnp) switch (on left rear side of transmission)
• Pnk
• Power distribution system
• Red
• Run
• Start
• Starter motor
• Strt rly ctrl
• Strtr fuse 62 (except 6.6l) fuse 57 (6.6l) 40a
• Strtr relay
• Tan
• Transmission control module (tcm) (left front of engine compt, near fan shroud)
• Underhood fuse block (left side of engine compt)

4.8L VIN C

4.8L VIN C, Charging Wiring Diagram for GMC Sierra 3500 HD 2008

List of elements for 4.8L VIN C, Charging Wiring Diagram for GMC Sierra 3500 HD 2008:

• 10 series
• 175a
• 4.3l
• Battery current sensor (right rear of engine compt)
• Body control module (bcm) (lower left side of dash)
• Charge ind sig
• Charge indicator
• Computer data lines system
• Current sply
• Data bus +
• Data bus -
• Driver information center (dic)
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 4.3l
• Fuse holder (right side of firewall)
• G101 (on lower right radiator support)
• G103 (on front of right cylinder head)
• Generator
• Generator sig
• Hot at all times
• Ign
• Instrument panel cluster
• Ipc fuse 46 10a
• Logic
• Low ref
• Mega fuse (right rear of engine compt)
• Mega fuse 175a
• Pnk
• Power distribution system
• Red
• Right battery
• Sens sig
• Serial data
• Tan
• Underhood fuse block (left side of engine compt)
• Volt

4.8L VIN C, Starting Wiring Diagram for GMC Sierra 3500 HD 2008

List of elements for 4.8L VIN C, Starting Wiring Diagram for GMC Sierra 3500 HD 2008:

• (on front of right cylinder head) (6.6l) g103
• 175a
• 4 speed a/t
• 4.3l
• 6 speed a/t
• 6.6l
• Acc
• Allison transmission 6 speed a/t
• Automatic transmission
• Automatic transmission fluid pressure (tfp) manual valve position switch
• Automatic transmission internal mode switch (ims)
• Battery
• Body control module (bcm) (lower left side of dash)
• Computer data lines system
• Control solenoid valve assembly
• Data bus +
• Data bus -
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 4.3l
• Fuse holder (right side of firewall)
• G101 (on lower right radiator support)
• G102 (except 4.3l) (on lower left front of engine)
• G103 (except 4.3l) (on front of right cylinder head)
• G103 (on front of right cylinder head)
• G106 (4.3l) (right rear of engine)
• G107 (4.3l) (top left rear of engine)
• Ign
• Ignition switch
• Internal mode switch
• J105
• J106
• J144
• Lock
• Mega fuse (right rear of engine compt)
• Mega fuse 175a
• Park/ neutral position (pnp) switch (on left rear side of transmission)
• Pnk
• Power distribution system
• Red
• Run
• Start
• Starter motor
• Strt rly ctrl
• Strtr fuse 62 (except 6.6l) fuse 57 (6.6l) 40a
• Strtr relay
• Tan
• Transmission control module (tcm) (left front of engine compt, near fan shroud)
• Underhood fuse block (left side of engine compt)

5.3L VIN 0

5.3L VIN 0, Charging Wiring Diagram for GMC Sierra 3500 HD 2008

List of elements for 5.3L VIN 0, Charging Wiring Diagram for GMC Sierra 3500 HD 2008:

• 10 series
• 175a
• 4.3l
• Battery current sensor (right rear of engine compt)
• Body control module (bcm) (lower left side of dash)
• Charge ind sig
• Charge indicator
• Computer data lines system
• Current sply
• Data bus +
• Data bus -
• Driver information center (dic)
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 4.3l
• Fuse holder (right side of firewall)
• G101 (on lower right radiator support)
• G103 (on front of right cylinder head)
• Generator
• Generator sig
• Hot at all times
• Ign
• Instrument panel cluster
• Ipc fuse 46 10a
• Logic
• Low ref
• Mega fuse (right rear of engine compt)
• Mega fuse 175a
• Pnk
• Power distribution system
• Red
• Right battery
• Sens sig
• Serial data
• Tan
• Underhood fuse block (left side of engine compt)
• Volt

5.3L VIN 0, Starting Wiring Diagram for GMC Sierra 3500 HD 2008

List of elements for 5.3L VIN 0, Starting Wiring Diagram for GMC Sierra 3500 HD 2008:

• (on front of right cylinder head) (6.6l) g103
• 175a
• 4 speed a/t
• 4.3l
• 6 speed a/t
• 6.6l
• Acc
• Allison transmission 6 speed a/t
• Automatic transmission
• Automatic transmission fluid pressure (tfp) manual valve position switch
• Automatic transmission internal mode switch (ims)
• Battery
• Body control module (bcm) (lower left side of dash)
• Computer data lines system
• Control solenoid valve assembly
• Data bus +
• Data bus -
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 4.3l
• Fuse holder (right side of firewall)
• G101 (on lower right radiator support)
• G102 (except 4.3l) (on lower left front of engine)
• G103 (except 4.3l) (on front of right cylinder head)
• G103 (on front of right cylinder head)
• G106 (4.3l) (right rear of engine)
• G107 (4.3l) (top left rear of engine)
• Ign
• Ignition switch
• Internal mode switch
• J105
• J106
• J144
• Lock
• Mega fuse (right rear of engine compt)
• Mega fuse 175a
• Park/ neutral position (pnp) switch (on left rear side of transmission)
• Pnk
• Power distribution system
• Red
• Run
• Start
• Starter motor
• Strt rly ctrl
• Strtr fuse 62 (except 6.6l) fuse 57 (6.6l) 40a
• Strtr relay
• Tan
• Transmission control module (tcm) (left front of engine compt, near fan shroud)
• Underhood fuse block (left side of engine compt)

5.3L VIN 3

5.3L VIN 3, Charging Wiring Diagram for GMC Sierra 3500 HD 2008

List of elements for 5.3L VIN 3, Charging Wiring Diagram for GMC Sierra 3500 HD 2008:

• 10 series
• 175a
• 4.3l
• Battery current sensor (right rear of engine compt)
• Body control module (bcm) (lower left side of dash)
• Charge ind sig
• Charge indicator
• Computer data lines system
• Current sply
• Data bus +
• Data bus -
• Driver information center (dic)
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 4.3l
• Fuse holder (right side of firewall)
• G101 (on lower right radiator support)
• G103 (on front of right cylinder head)
• Generator
• Generator sig
• Hot at all times
• Ign
• Instrument panel cluster
• Ipc fuse 46 10a
• Logic
• Low ref
• Mega fuse (right rear of engine compt)
• Mega fuse 175a
• Pnk
• Power distribution system
• Red
• Right battery
• Sens sig
• Serial data
• Tan
• Underhood fuse block (left side of engine compt)
• Volt

5.3L VIN 3, Starting Wiring Diagram for GMC Sierra 3500 HD 2008

List of elements for 5.3L VIN 3, Starting Wiring Diagram for GMC Sierra 3500 HD 2008:

• (on front of right cylinder head) (6.6l) g103
• 175a
• 4 speed a/t
• 4.3l
• 6 speed a/t
• 6.6l
• Acc
• Allison transmission 6 speed a/t
• Automatic transmission
• Automatic transmission fluid pressure (tfp) manual valve position switch
• Automatic transmission internal mode switch (ims)
• Battery
• Body control module (bcm) (lower left side of dash)
• Computer data lines system
• Control solenoid valve assembly
• Data bus +
• Data bus -
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 4.3l
• Fuse holder (right side of firewall)
• G101 (on lower right radiator support)
• G102 (except 4.3l) (on lower left front of engine)
• G103 (except 4.3l) (on front of right cylinder head)
• G103 (on front of right cylinder head)
• G106 (4.3l) (right rear of engine)
• G107 (4.3l) (top left rear of engine)
• Ign
• Ignition switch
• Internal mode switch
• J105
• J106
• J144
• Lock
• Mega fuse (right rear of engine compt)
• Mega fuse 175a
• Park/ neutral position (pnp) switch (on left rear side of transmission)
• Pnk
• Power distribution system
• Red
• Run
• Start
• Starter motor
• Strt rly ctrl
• Strtr fuse 62 (except 6.6l) fuse 57 (6.6l) 40a
• Strtr relay
• Tan
• Transmission control module (tcm) (left front of engine compt, near fan shroud)
• Underhood fuse block (left side of engine compt)

5.3L VIN J

5.3L VIN J, Charging Wiring Diagram for GMC Sierra 3500 HD 2008

List of elements for 5.3L VIN J, Charging Wiring Diagram for GMC Sierra 3500 HD 2008:

• 10 series
• 175a
• 4.3l
• Battery current sensor (right rear of engine compt)
• Body control module (bcm) (lower left side of dash)
• Charge ind sig
• Charge indicator
• Computer data lines system
• Current sply
• Data bus +
• Data bus -
• Driver information center (dic)
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 4.3l
• Fuse holder (right side of firewall)
• G101 (on lower right radiator support)
• G103 (on front of right cylinder head)
• Generator
• Generator sig
• Hot at all times
• Ign
• Instrument panel cluster
• Ipc fuse 46 10a
• Logic
• Low ref
• Mega fuse (right rear of engine compt)
• Mega fuse 175a
• Pnk
• Power distribution system
• Red
• Right battery
• Sens sig
• Serial data
• Tan
• Underhood fuse block (left side of engine compt)
• Volt

5.3L VIN J, Starting Wiring Diagram for GMC Sierra 3500 HD 2008

List of elements for 5.3L VIN J, Starting Wiring Diagram for GMC Sierra 3500 HD 2008:

• (on front of right cylinder head) (6.6l) g103
• 175a
• 4 speed a/t
• 4.3l
• 6 speed a/t
• 6.6l
• Acc
• Allison transmission 6 speed a/t
• Automatic transmission
• Automatic transmission fluid pressure (tfp) manual valve position switch
• Automatic transmission internal mode switch (ims)
• Battery
• Body control module (bcm) (lower left side of dash)
• Computer data lines system
• Control solenoid valve assembly
• Data bus +
• Data bus -
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 4.3l
• Fuse holder (right side of firewall)
• G101 (on lower right radiator support)
• G102 (except 4.3l) (on lower left front of engine)
• G103 (except 4.3l) (on front of right cylinder head)
• G103 (on front of right cylinder head)
• G106 (4.3l) (right rear of engine)
• G107 (4.3l) (top left rear of engine)
• Ign
• Ignition switch
• Internal mode switch
• J105
• J106
• J144
• Lock
• Mega fuse (right rear of engine compt)
• Mega fuse 175a
• Park/ neutral position (pnp) switch (on left rear side of transmission)
• Pnk
• Power distribution system
• Red
• Run
• Start
• Starter motor
• Strt rly ctrl
• Strtr fuse 62 (except 6.6l) fuse 57 (6.6l) 40a
• Strtr relay
• Tan
• Transmission control module (tcm) (left front of engine compt, near fan shroud)
• Underhood fuse block (left side of engine compt)

5.3L VIN M

5.3L VIN M, Charging Wiring Diagram for GMC Sierra 3500 HD 2008

List of elements for 5.3L VIN M, Charging Wiring Diagram for GMC Sierra 3500 HD 2008:

• 10 series
• 175a
• 4.3l
• Battery current sensor (right rear of engine compt)
• Body control module (bcm) (lower left side of dash)
• Charge ind sig
• Charge indicator
• Computer data lines system
• Current sply
• Data bus +
• Data bus -
• Driver information center (dic)
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 4.3l
• Fuse holder (right side of firewall)
• G101 (on lower right radiator support)
• G103 (on front of right cylinder head)
• Generator
• Generator sig
• Hot at all times
• Ign
• Instrument panel cluster
• Ipc fuse 46 10a
• Logic
• Low ref
• Mega fuse (right rear of engine compt)
• Mega fuse 175a
• Pnk
• Power distribution system
• Red
• Right battery
• Sens sig
• Serial data
• Tan
• Underhood fuse block (left side of engine compt)
• Volt

5.3L VIN M, Starting Wiring Diagram for GMC Sierra 3500 HD 2008

List of elements for 5.3L VIN M, Starting Wiring Diagram for GMC Sierra 3500 HD 2008:

• (on front of right cylinder head) (6.6l) g103
• 175a
• 4 speed a/t
• 4.3l
• 6 speed a/t
• 6.6l
• Acc
• Allison transmission 6 speed a/t
• Automatic transmission
• Automatic transmission fluid pressure (tfp) manual valve position switch
• Automatic transmission internal mode switch (ims)
• Battery
• Body control module (bcm) (lower left side of dash)
• Computer data lines system
• Control solenoid valve assembly
• Data bus +
• Data bus -
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 4.3l
• Fuse holder (right side of firewall)
• G101 (on lower right radiator support)
• G102 (except 4.3l) (on lower left front of engine)
• G103 (except 4.3l) (on front of right cylinder head)
• G103 (on front of right cylinder head)
• G106 (4.3l) (right rear of engine)
• G107 (4.3l) (top left rear of engine)
• Ign
• Ignition switch
• Internal mode switch
• J105
• J106
• J144
• Lock
• Mega fuse (right rear of engine compt)
• Mega fuse 175a
• Park/ neutral position (pnp) switch (on left rear side of transmission)
• Pnk
• Power distribution system
• Red
• Run
• Start
• Starter motor
• Strt rly ctrl
• Strtr fuse 62 (except 6.6l) fuse 57 (6.6l) 40a
• Strtr relay
• Tan
• Transmission control module (tcm) (left front of engine compt, near fan shroud)
• Underhood fuse block (left side of engine compt)

6.0L VIN Y

6.0L VIN Y, Charging Wiring Diagram for GMC Sierra 3500 HD 2008

List of elements for 6.0L VIN Y, Charging Wiring Diagram for GMC Sierra 3500 HD 2008:

• 10 series
• 175a
• 4.3l
• Battery current sensor (right rear of engine compt)
• Body control module (bcm) (lower left side of dash)
• Charge ind sig
• Charge indicator
• Computer data lines system
• Current sply
• Data bus +
• Data bus -
• Driver information center (dic)
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 4.3l
• Fuse holder (right side of firewall)
• G101 (on lower right radiator support)
• G103 (on front of right cylinder head)
• Generator
• Generator sig
• Hot at all times
• Ign
• Instrument panel cluster
• Ipc fuse 46 10a
• Logic
• Low ref
• Mega fuse (right rear of engine compt)
• Mega fuse 175a
• Pnk
• Power distribution system
• Red
• Right battery
• Sens sig
• Serial data
• Tan
• Underhood fuse block (left side of engine compt)
• Volt

6.0L VIN Y, Starting Wiring Diagram for GMC Sierra 3500 HD 2008

List of elements for 6.0L VIN Y, Starting Wiring Diagram for GMC Sierra 3500 HD 2008:

• (on front of right cylinder head) (6.6l) g103
• 175a
• 4 speed a/t
• 4.3l
• 6 speed a/t
• 6.6l
• Acc
• Allison transmission 6 speed a/t
• Automatic transmission
• Automatic transmission fluid pressure (tfp) manual valve position switch
• Automatic transmission internal mode switch (ims)
• Battery
• Body control module (bcm) (lower left side of dash)
• Computer data lines system
• Control solenoid valve assembly
• Data bus +
• Data bus -
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 4.3l
• Fuse holder (right side of firewall)
• G101 (on lower right radiator support)
• G102 (except 4.3l) (on lower left front of engine)
• G103 (except 4.3l) (on front of right cylinder head)
• G103 (on front of right cylinder head)
• G106 (4.3l) (right rear of engine)
• G107 (4.3l) (top left rear of engine)
• Ign
• Ignition switch
• Internal mode switch
• J105
• J106
• J144
• Lock
• Mega fuse (right rear of engine compt)
• Mega fuse 175a
• Park/ neutral position (pnp) switch (on left rear side of transmission)
• Pnk
• Power distribution system
• Red
• Run
• Start
• Starter motor
• Strt rly ctrl
• Strtr fuse 62 (except 6.6l) fuse 57 (6.6l) 40a
• Strtr relay
• Tan
• Transmission control module (tcm) (left front of engine compt, near fan shroud)
• Underhood fuse block (left side of engine compt)

6.2L VIN 8

6.2L VIN 8, Charging Wiring Diagram for GMC Sierra 3500 HD 2008

List of elements for 6.2L VIN 8, Charging Wiring Diagram for GMC Sierra 3500 HD 2008:

• 10 series
• 175a
• 4.3l
• Battery current sensor (right rear of engine compt)
• Body control module (bcm) (lower left side of dash)
• Charge ind sig
• Charge indicator
• Computer data lines system
• Current sply
• Data bus +
• Data bus -
• Driver information center (dic)
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 4.3l
• Fuse holder (right side of firewall)
• G101 (on lower right radiator support)
• G103 (on front of right cylinder head)
• Generator
• Generator sig
• Hot at all times
• Ign
• Instrument panel cluster
• Ipc fuse 46 10a
• Logic
• Low ref
• Mega fuse (right rear of engine compt)
• Mega fuse 175a
• Pnk
• Power distribution system
• Red
• Right battery
• Sens sig
• Serial data
• Tan
• Underhood fuse block (left side of engine compt)
• Volt

6.2L VIN 8, Starting Wiring Diagram for GMC Sierra 3500 HD 2008

List of elements for 6.2L VIN 8, Starting Wiring Diagram for GMC Sierra 3500 HD 2008:

• (on front of right cylinder head) (6.6l) g103
• 175a
• 4 speed a/t
• 4.3l
• 6 speed a/t
• 6.6l
• Acc
• Allison transmission 6 speed a/t
• Automatic transmission
• Automatic transmission fluid pressure (tfp) manual valve position switch
• Automatic transmission internal mode switch (ims)
• Battery
• Body control module (bcm) (lower left side of dash)
• Computer data lines system
• Control solenoid valve assembly
• Data bus +
• Data bus -
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 4.3l
• Fuse holder (right side of firewall)
• G101 (on lower right radiator support)
• G102 (except 4.3l) (on lower left front of engine)
• G103 (except 4.3l) (on front of right cylinder head)
• G103 (on front of right cylinder head)
• G106 (4.3l) (right rear of engine)
• G107 (4.3l) (top left rear of engine)
• Ign
• Ignition switch
• Internal mode switch
• J105
• J106
• J144
• Lock
• Mega fuse (right rear of engine compt)
• Mega fuse 175a
• Park/ neutral position (pnp) switch (on left rear side of transmission)
• Pnk
• Power distribution system
• Red
• Run
• Start
• Starter motor
• Strt rly ctrl
• Strtr fuse 62 (except 6.6l) fuse 57 (6.6l) 40a
• Strtr relay
• Tan
• Transmission control module (tcm) (left front of engine compt, near fan shroud)
• Underhood fuse block (left side of engine compt)