@rbarrios my 2011 Enclave yesterday drove fine in the am to work, but leaving 8 hours later, the car wouldn't turn over. This is different from the last issue you helped me with (that's is now fixed, ie purge valve). This time upon attempting to turn over , the lights and everything comes on, but it does turn over. It gives a whirling sound (maybe like a distant saw being ran) as I'm turning the key. I had checked the battery, that wasn't it. I had to get it towed. I'm being told it could be fuel pump, alternator, starter or relay. Any thoughts? I'll add this to a new post too.when you turn the key--- the computer takes over the vehicle starting--
and will crank engine until it starts..
I believe after 9 or 15 seconds of cranking--- it stops... to avoid damaging starter.
This is in the manual.
at the car wash--- did you use a pressure washer on the engine?