Boat suddenly just won't start

[realsteel63]

Was cleaning my boat for hours til I needed to drift away, but it suddenly just won't start. Theres a light under the blower switch that stays on even when everything is off, but turns off when the blower is running. Cant seem to find the light on the manual, so I guess its a guessing game now for me. Any help?

 

[oui baguette]

Was cleaning my boat for hours til I needed to drift away, but it suddenly just won't start. Theres a light under the blower switch that stays on even when everything is off, but turns off when the blower is running. Cant seem to find the light on the manual, so I guess its a guessing game now for me. Any help?

What? Was the light right there all along? Did you get your Tahoe brand new or secondhand? The light is probably tied into the blower circuit. Or it could be a stuck relay or short somewhere. Try to trace the wiring back if you can?

 

[anchorandgo]

I dealt with something similar on a friend's Tahoe Q5, there was this strange dash light that no one could figure out. It turned out to be an old owner's mod connected to an accessory ground. That was actually draining the battery too. If your vehicle is secondhand, it might be a remnant of a previous mod. I'd recommend tracing the blower circuit wiring to see if there's anything non-factory connected to it. By the way, did you notice if the light flickers or changes in brightness when you start it? That could help pinpoint the issue.