THERMOSTAT
Thermostat contains a restriction valve actuated by a thermostatic element. On Chevette models, thermostat is designed to open and close at 190° F (88°C). On all other models, thermostat is designed to open and close at 195° F (91°C).
PRESSURE CAP
All models, except 4.3L Diesel, use a 15 psi (1.0 kg/cm 2 )
pressure cap. The 4.3L Diesel engine uses a 16-18.5 psi (1.1-1.3 kg/cm 2 ) pressure cap.
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. On all models, except 4.3L Diesel, maintain a 50% mixture of ethylene glycol anti-freeze and water. On 4.3L Diesel, use 64% ethylene glycol anti-freeze and 36% water.
Note. Rusty appearing coolant is an indication that coolant has become ineffective. System should be flushed and new coolant added to radiator.
COOLANT
Note. Actual capacity figures are shown, but may vary 15% due to system variations. Capacities include coolant reservoir (filled to ADD mark).
| Application | Quarts (L) | |
|---|---|---|
| Chevette | 9.6 (9.0) | |
| Cavalier | 9.6 (9.1) | |
| Celebrity | ||
| 2.5L | (1) 9.6 (9.0) | |
| 2.8L | (1) 12.5 (11.8) | |
| 4.3L Diesel | (1) 13.1 (12.2) | |
| Citation II | ||
| 2.5L | (1) 9.0 (8.8) | |
| 2.8L | (2) 11.0 (10.4) | |
| Camaro | ||
| 2.5L | 13.0 (12.1) | |
| 2.8L | 12.5 (11.8) | |
| 5.0L | 17.0 (16.1) | |
| Caballero, El Camino & Monte Carlo | ||
| 3.8L (229") | 15.0 (14.2) | |
| 3.8L (231") | 11.6 (11.1) | |
| 5.0L | 16.3 (15.6) | |
| 5.7L Diesel | 17.3 (16.5) | |
| Caprice & Impala | ||
| 3.8L (229") | 14.3 (13.5) | |
| 3.8L (231") | 11.5 (11.0) | |
| 5.0L | 15.0 (14.2) | |
| 5.7L Diesel | 18.2 (17.2) | |
| Corvette | 14.0 (13.3) | |
| (1) Add .5 qts. (.4L) with A/C. (2) Capacity with A/C is 13.1 qts. (12.4L). | ||
| (1) | Add .5 qts. (.4L) with A/C. |
| (2) | Capacity with A/C is 13.1 qts. (12.4L). |
COOLANT CAPACITY