More than the customer would desire Smoke (White or Gray)
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect the coolant level in the reservoir. White coolant smoke may be mistaken for blue/gray smoke. If the coolant level is low, refer to Loss of Coolant
- If more than the customer would desire smoke is present, inspect for a stuck open fuel injector by performing the following procedure:
- Disconnect the electrical connector at the fuel injection pump.
- Remove the glow plugs. Refer to Glow Plug Replacement .
- Crank the engine while observing the glow plug holes for fuel spray.
- Replace the fuel injectors for the cylinders that spray fuel.
- Inspect for contaminated oil or high oil level.
NOTE:Do not stand in front of the glow plug holes while cranking the engine.
- If the ECM or a fuel injector has recently been replaced, it may be necessary to confirm the fuel injector flow rate values.
- Inspect the fuel injectors.