Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Perform a visual system check to look for a coolant loss. Inspect the ground under the vehicle. Is there coolant on the ground? | -- | -- | |
2 | Inspect the radiator for stains and wetness. Is the radiator wet or stained? | -- | ||
3 | Repair or replace the radiator as necessary. Refer to the following procedures: Is there still a loss of coolant? | -- | System OK | |
4 | Inspect the hoses for stains or wetness. Are the hoses stained or wet? | -- | ||
5 | Repair or replace the hoses as necessary. Refer to Radiator Hose Replacement . Is there still a loss of coolant? | -- | System OK | |
6 | Inspect the water pump for stains or wetness. Is the water pump stained or wet? | -- | ||
7 | Repair or replace the water pump. Refer to the following procedures: Is there still a loss of coolant? | -- | System OK | |
8 | Inspect the coolant recovery reservoir. Does the coolant overflow after you stop the engine? | -- | -- | |
9 | Inspect the radiator cap for pressure retention. Is the radiator cap retaining the proper pressure? | 103 kPa (15 psi) | ||
10 | Inspect the temperature reading. Is the temperature too high? | -- | Go to Engine Overheating . | |
11 | Replace the radiator cap. Refer to Pressure Cap Description . Is there still a loss of coolant? | -- | System OK | |
12 | Inspect the coolant gravity for glycol concentration. Refer to Coolant Concentration Testing . Is the glycol concentration too low? | -- | System OK | |
13 | Replace the glycol with a 50/50 mixture in accordance with GM 6277M. Is there still a loss of coolant? | -- | -- | System OK |
