GM Service Manual Online
For 1990-2009 cars only

Application

Specification

Metric

English

Charging System

  • Brush Length - Standard

16 mm

0.63 in

  • Brush Length - Minimum

2 mm

0.08 in

  • Condenser Capacity

0.5 ยต F

  • Direction of Rotation

Clockwise (as viewed from pulley side)

  • Maximum Generator Output

55 Amps

  • Maximum Generator Speed

18,000 RPM

  • No-Load Generator Speed

1100 RPM

  • Normal Operating Voltage

12 Volts

  • Polarity

Negative (-) Ground

  • Regulator Voltage

14.4 - 15.0 Volts

  • Temperature Range

30 to 90°C

-22 to 194°F

Drive Belt Tension

  • Drive Belt Deflection - New Belt

5 - 7 mm at 10 kg

0.20 - 0.27 in at 22 lbs

  • Drive Belt Deflection - Used Belt

6 - 8 mm at 10 kg

0.24 - 0.31 in at 22 lbs

Ignition System

  • Spark Plug Gap

0.71 mm

0.028 in

  • Spark Plug Type-NGK

BKR6E

  • Spark Plug Type-Denso

K20PR-U

  • Spark Plug Type-AC Delco

R43XLS

Starting System

  • Brush Length - Standard

17.5 mm

0.69 in

  • Brush Length - Minimum

12.0 mm

0.47 in

  • Brush Spring Tension - Standard

1.9 kg

4.19 lbs

  • Brush Spring Tension - Minimum

0.7 kg

1.54 lbs

  • Commutator Insulation Depth - Standard

0.50-0.80 mm

0.020 - 0.031 in

  • Commutator Insulation Depth - Maximum

0.20 mm

0.47 in

  • Commutator Outside Diameter - Standard

29.4 mm

1.157 in

  • Commutator Outside Diameter - Minimum

28.8 mm

1.134 in

  • Commutator Run-out - Standard

0.05 mm

0.002 in

  • Commutator Run-out -Maximum

0.40 mm

0.016 in

  • Direction of Rotation

Clockwise (as viewed from pinion)

  • Locked Rotor - Automatic Transmission (25.5 N·m/18.8 lb ft)

980 amps at 4 volts

  • Locked Rotor - Manual Transmission (18.6 N·m/13.8 lb ft)

780 Amps at 4 Volts

  • Number of Pinion Teeth

9

  • Output-Automatic Transmission

1.4 kwatts

  • Output-Manual Transmission

1.2 kwatts

  • Rating

30 Seconds

  • Starter Current Draw, load, automatic transmission (10.4 N·m/92 lb in of torque)

300 Amps at 7.7 Volts

  • Starter Current Draw, load, manual transmission (9.1 N·m/80.5 lb in of torque)

300 Amps at 7.7 Volts

  • Starter Current Draw, no load, automatic transmission

90 Amps at 11 Volts

  • Starter Current Draw, no load, manual transmission

90 Amps at 11 Volts

  • Starter Solenoid Operating Voltage

8 Volts Minimum

  • Voltage

12 Volts