Having problems with your 2003 Chevrolet Avalanche ?

I went through a huge puddle and 300 ft after it there was a red light, I stopped and my avalanche stalled and won't start again- it sounds like it wants to but it won't- all the power comes on for windows radio and dash but it just won't start- what can I do?

Posted / edited by AnonymousUser on : 19-02-2018

Answers :

Though the commercials show 4x4's plowing their way through rivers etc, the reality of it is, without special mods to seal sensors and ignition components from water, the low voltage used there can easily cross over between connector pins and cause all kinds of problems including complete shut down. Only cure for that is to carefully dry off every connector inside and out, as well as all ignition wiring. Hopefully, no water got into the airstream and damaged the engine internals (water causes hydro-lock that can bend piston connecting rods).
You should be able to re-start it once it's completely dry.
Remember this when you feel the urge to hose off your engine to clean it. That too will result in the same problem.
If it turns over and will not start chances are you ingested some water.remove the spark plugs,disconnect fuel injectors,and coils.turn engine over to remove water from cylinders.If vehicle does not turn OVER you hydrolocked the engine due to water ingestion.You can proceed with the above procedure but chances are you bent a rod in the engine and will need a engine.
Repair Help & Product Troubleshooting for 2003 Chevrolet Avalanche

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