Only lockout I know of is the anti-rollover switch that will cut gas flow which can be accidentally triggered by a sharp impact/jolt from a pothole.....reset switch is behind a rear body panel. Fords use them but I don't believe that GM does, their ECU cuts power to the fuel pump.
No way to tell for certain unless you can get a breaker bar on the crankshaft.
Might be an overheat message in the DIC, pegged temperature gauge and an engine light, but Only overheat protection mode I know of is to pull over immediately and stop the engine. Keep moving and the next automatic mode is a blown gasket, cracked block or seized engine. If not seized, could be a blown gasket with hydro-lock condition, pull the dipstick and see if it is in the crankcase froma leaking head gasket, warped or cracked head/block.
Current Chevys -'16 Silverado LT;'18 Malibu LT Redline;'18 Traverse Premier Redline<br /><br />Previous Chevys: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
Last edited by Thomcat; 05-13-2019 at 07:57 PM.