Initially had the same concerns and hated it on my '16 Malibu. Newer one battery DC-DC system on the Traverse works seamlessly. Most of the time I don't even notice it operating. The engine restarts before you can get your foot from the brake to the accelerator..........don't even hear the engine crank for a restart just a slight bump. No hesitation, shutter or delay....engine is up to speed before you hit the accelerator and transmission servos are pressurized during the stop cycle so no delay in tranny engagement.
Easy to disable from the shift lever, shift to L and hit the (+) button eight times for L9 and transmission will automatically upshift and downshift through all the gears for the entire drive cycle same as if a disable button was used.
Aftermarket device will invalidate the warranty, but also requires a different remote starting procedure whose timing and waiting I found unsuitable for my non witnessed starts.
Current Chevys -'19 Silverado RST;'18 Malibu LT Redline;'18 Traverse Premier Redline<br /><br />Previous Chevys:16 Silverado LT;16 Malibu LT2;'17 Impala;'16 MalibuLT;'15 Camaro LS;'15 Traverse; '13,'12 and '07 Avalanche LTs; '11 Tahoe LT; '13 &'11 Malibu LTs; '08 Trailblazer;'06 Colorado WT..... Chrysler era.....'80 Citation;'75 Impala;'72 Chevelle;'69 Camaro R/T;'65 Impala SS;'62 Nova