Whenever the roads are wet my car loses all electrical power. It is currently at the garage where they state they have gone through everything and can find nothing wrong. This happens as I am driving down the road, the lights will dim, dashboard lights go off, heater goes off, wipers, etc.-all things electrical. At the same time all the dummy lights come on the dashboard, I step on the gas and it bogs down. Tune up was done last summer, starter, alternator & battery are all in working order.As I stated, this only happens when it is wet on the roads (when I'm driving it).
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Possible the trip throught the deep puddle soaked the alternatior when water got above the splash guard mounted on the under carrage suggest you check all of the electrical wiring amd relays to see if any are wet or are now exposed to the weather. Good luck. Fixes for deep puddle adventures can be difficult to find and fix.
90% of the time, it is a combination of neglected preventative maintenance. eg: spark plugs over 3 years old,also bad ignition coils or module or an egr valve gone bad Check for obd2 codes & cylinder misfires, & replace the front oxygen sensors when you get to 100,000 miles. You do not need a tune-up,you need to diagnose just the current drivability issues & resolve
Water leaks in along the top of the windshield and runs along the headliner and down the A pilar soaking your main harness plug which leads to a plethora of electrical issues. Eventually if it's not corrected the wet carpets causes the aluminum framework under the shifter console to corrode and you lose all electrical grounds from the fuse panel in the console to the body. It's a design flaw. An aluminum bracket in the console bolted to a steel floor will corrode anyway but the water causes it to happen much faster.
Take the car to a Chevy garage and tell them that is a well known problem with these cars. The first thing the garage will do is want to change a bunch expensive sensors so just stop them before they start. Your problems will continue until the water leak is fixed. Been there done that. 16 trips to three Chevy garages and I fixed it in my garage. A bad design and factory trained mechanics with very limited mechanical and electrical ability, pretty sad.
is their any chance the belt is getting wet and slipping or do you lose power steering whenever you turn? if so check that all your power steering lines are not leaking (presure line will spray out , return line will just drip) check and repair as necesary
the crank pulleys (also called a harmonic dampener) on these vehicle are a fairly common failure. as they begin to break apart, the pulley will begin to have a wobble as the engine runs, causing the drive belts that power your alternator, power steering, etc to loosen off. when the belts then get wet, combined with being loose, they will slip, causing your accessories not to work. hope this was helpful!
the stabilitrac system will turn the light on when its activated. Driving in wet/snowy roads will cause one or more wheel to spin as it slips on wet roads, this condition is normal.
I'm sure once your on flat even road without the possibility of your drice wheels to spin the light will turn off on its own.
pay more attention to when it happens, turning, taking off from a stop, is the road wet or slippery.
if the road is slippery and you take off from a stop or make a turn while acellerating on wet road the right tire will start to spin on the slippery surface, when this happens the computer will sense the slipping and reduce the engine power just long enough to re-gain control and goes back to normal.