GM Service Manual Online
For 1990-2009 cars only

Estimated Temperature

Estimated Temperature

Minimum Voltage

21°C

70°F

9.6 V

10°C

50°F

9.4 V

0°C

32°F

9.1 V

-10°C

15°F

8.8 V

-18°C

0°F

8.5 V