And you have had this car how long? I presume long enough to realize anything less than 3 or 4 on the heater dial is "non existent" as far as a blower speed. On mine it sometimes feels like the fan needs a kick start to get going. As far as the lights, I don't know. I never really pay attention to them. Esp since it is typically on vent. Unless I need the defrost.

 

I've had the car for a year and am familiar with it's operation. A low fan speed can sometimes be adequate for ventilation or even heating/cooling if the conditions are mild.

My question was really an attempt to find out if anybody else has seen this temporary HVAC outage on their Cruze. I hadn't driven the car for about 3 days. Maybe some memory functions and car settings are cleared after a certain number of hours of non-use, although I don't remember reading anything in the owner's manual about it.

 

i have issues with the radio like that very hard for a dealer to correct a concer that is intermitent or not able to duplicate wait till the issue worsens or mayb will never happen again

 

Erratic problems like this can be caused by the POR or power on reset, a pin on the microcontroller that has a resistor tied to Vdd with a capacitor grounded to to Vss. All have a program counter that must be reset to zero, if not reset, would have a random number so it doesn't start reading code at the beginning, so its all confused. Vdd is applied simultaneously to power this chip and also to the POR RC circuit. If glitches appear on this line due to a dirty relay contact or ignition switch, the program counter will not be reset to zero.

On some vehicles, had to pull both the BCM and PCM and install a larger capacitor to solve this problem, hey that would add a couple of cents that would kill the stockholders.

04 Cavalier had this problem with the cruise control, wouldn't work, would turn it off, hit the clutch, turn off the ignition, and switch it back on rapidly, switch on the cruise, and then it would work again. Ha, when Microsoft first came out with Windows, hired a bunch of foreigners that could barely say in English, try rebooting your computer. Dealer couldn't fix that, but after awhile, those contacts took a set and that problem went away.

Code can be written by a good guy that is self correcting, but that takes time conflicting with time to market. Called looping. Yet another problem created in the late 60's, is that the first microprocessors had a separate data and program bus. What a microcontroller is, is a microprocessor with extra components to make it a miniature computer. But marketing killed that as that added for an eight bit processor, eight pins, and bit more real estate savings on the chip by multiplexing both the data and program within the confines of the chip.

With one minor problem, if the processor was looking for a program code, but saw an unidentified date byte, it would get confused and crash if the program counter skipped a beat. We had to live with this every since. Just like the two digit year they pushed in the early 80's to save 30 cents on computers that then cost thousands of dollars. That cost billions in Y2K.

Concept of these processors was to save design cost on hardware, that sure worked well, can buy a computer for practically nothing today. Software was suppose to cost nothing, just code, but they sure rob you on that.

If marketing people were honest, they wouldn't say all the time and convenience you would save by buying their products, they would say, you want problems, we've got problems.

 

I drove it again today and no issues, which is good because I had to tap into the BCM wiring to install my Rostra cruise control. I bet the dealer would blame that for any problems. I doubt it's related because the cruise control uses vampire taps on the wires specifically for the cruise control functions. No other wires were touched.

 

I have experienced the same issue you described. it has always occurred when the battery was low and/or needed a boost. After, getting the car started I notice I had no lights in the center lower section of the dash panel. (the heater/AC section) and no power to the the control switches. I found that simply turning the car off and restarting it solved the problem.

This would seem to agree with NickD's explanation above.
:rotate:

 

I recently bought a 2011 Chevy cruze and stayed having issues. It starated with the passenger window going down on its own. At first it would go right back up and now is delayed for several minutes before it will go up. Then the radio started flashing on and off randomly and the abs and maintenance traction control lights keeps appearing. Then the last few week the cat has been slow at cranking this morning it wouldn't crank at all the first two attempts them it started up. My battery voltage reads 15.4 always id that matters.