Contents Section: Cooling System (mechanical) All sections

Cooling System Specifications Chevrolet Step Van P20

THERMOSTAT

All models use thermostat that starts to open at 195°F (91°C), and is fully open at 222°F (106°C).

PRESSURE CAP

All models use 15 psi (1.0 kg/cm 2 ) pressure cap which should be tested at 14-17 psi (.9-1.2 kg/cm 2 ).

WATER PUMP

Water pump is serviced only as an assembly.

MAINTENANCE

Inspect cooling system every 12 months or 15,000 miles. Drain and flush cooling system every 24 months or 30,000 miles. Maintain coolant level with 50% mixture of ethylene glycol based anti-freeze and low mineral content water in all seasons.

ApplicationQuarts (L)
1.9L9.5 (9.0)
2.2L Diesel
Standard11.5 (11.0)
Heavy Duty or A/C12.0 (11.5)
2.5L10.0 (9.5)
2.8L12.0 (11.5)
4.3L
Astro/Safari Models13.5 (12.8)
"C" & "K" Models10.9 (10.3)
"G" Models11.1 (10.5)
4.8L
"P" Models13.8 (13.1)
All Other Models15.5 (14.7)
5.0L & 5.7L
"P" Models15.5 (14.6)
"G" Models17.0 (16.0)
All Other Models
With A/C18.0 (17.0)
Without A/C17.5 (16.6)
6.2L Diesel
"C" & "K" Models25.0 (23.7)
"G" Models
VIN C24 (22.7)
VIN J25.6 (24.2)
"P" Models
Forward Control Chassis25 (23.7)
Motor Home Chassis24.7 (23.4)
7.4L
"C" & "K" Models
With A/C24.5 (23.2)
Without A/C23.0 (21.8)
"P" Models22.5 (21.3)

COOLANT CAPACITY