General Motors: Notes

COOLING SYSTEM CAPACITY

Application⁽¹⁾

Quarts

250"

C10 & K10 Man. & Auto. Trans

⁽²⁾15

G10/30

292"

C20 Auto. & Man. Trans.

⁽²⁾15

C30 & K30 Auto. & Man. Trans.

⁽²⁾14.5

P10/30

13.5

305"

C10/30 & K10/30 Auto. & Man. Trans.

17.5

G10

⁽⁴⁾19

350" Gas

C10/30 & K10/30 Auto. & Man. Trans.

⁽²⁾17.5

G10/30 Auto. & Man. Trans.

P20

⁽³⁾16.5

350" Diesel

400"

K20 Auto. Trans.

⁽⁵⁾⁽⁶⁾18

G20/30 Auto. Trans

⁽⁵⁾20

454"

P30 Auto. Trans.

⁽⁴⁾23.5

C20/30 Auto. Trans.

⁽⁷⁾24

⁽¹⁾

When General Motors is referred to within this manual (rather than Chevrolet or GMC), the numerical vehicle series designations will be abbreviated for common reference to both Chevrolet and GMC. Chevrolet will use numerical series designation as listed. GMC models will be identified as follows: 10 = 1500; 20 = 2500; 30 = 3500.

⁽²⁾	Add 1/2 qt. with Air Conditioning.

⁽³⁾	Add 1/2 qt with Heavy Duty Cooling.

⁽⁴⁾	Add 1 qt. with Air Conditioning.

⁽⁵⁾	Add 1 qt. with Heavy Duty Cooling.

⁽⁶⁾	Add 2 qt. with Air Conditioning.

⁽⁷⁾	Add 1/2 qt. with Trans. Oil Cooler.

PRESSURE CAP

Application	PSI
All Models	15

THERMOSTAT

Application

⁽¹⁾ Rating °F

All

195

⁽¹⁾	Thermostat should be full open at 25°F above stamped rating and fully closed at 10°F below stamped rating.