The engine types may include 3.6L 3564CC 217Cu. V6 FLEX OHV Naturally Aspirated,4.3L 262Cu. V6 GAS OHV Naturally Aspirated,5.3L 5328CC 325Cu. V8 FLEX OHV Naturally Aspirated,5.3L 5328CC 325Cu. V8 GAS OHV Naturally Aspirated,5.3L 5328CC 325Cu.
It would start fine for a week, then suddenly refuse to crank for an hour. No codes, no warning. After checking the battery, starter, and ignition system—all of which tested fine—we hooked up a high-end scanner to monitor live data.
The engine types may include 3.6L 3564CC 217Cu. V6 FLEX OHV Naturally Aspirated,4.3L 262Cu. V6 GAS OHV Naturally Aspirated,5.3L 5328CC 325Cu. V8 FLEX OHV Natura lly Aspirated,5.3L 5328CC 325Cu. V8 GAS OHV Naturally Aspirated,6.2L 6162CC 376Cu.