▁using ▁optional ▁Vor te c ▁ 5 3 0 0 ▁V 8 ▁engine . ▁G M ▁also ▁extended ▁the ▁technology ▁on ▁the ▁new ▁High ▁Value ▁L Z 8 ▁V 6 ▁engine ▁in ▁the ▁Che v ro let ▁Imp ala ▁and ▁Monte ▁Carlo ▁as ▁well ▁as ▁the ▁ 5 . 3 L ▁V 8 ▁L S 4 ▁engine ▁in ▁the ▁last ▁generation ▁Che v ro let ▁Imp ala ▁SS , ▁Monte ▁Carlo ▁SS ▁and ▁Pont iac ▁Grand ▁Prix ▁G X P . ▁ ▁In ▁both ▁designs , ▁half ▁of ▁the ▁cyl ind ers ▁can ▁be ▁switched ▁off ▁under ▁light ▁loads . ▁ ▁On ▁July ▁ 2 1 , ▁ 2 0 0 8 , ▁General ▁Mot ors ▁un ve iled ▁the ▁production ▁version ▁of ▁the ▁ 2 0 1 0 ▁Che v ro let ▁Cam aro . ▁The ▁Cam aro ▁SS ▁with ▁an ▁automatic ▁transmission ▁features ▁the ▁G M ▁L 9 9 ▁engine , ▁a ▁development ▁of ▁the ▁L S 3 ▁with ▁Active ▁F uel ▁Management ▁which ▁allowed ▁it ▁to ▁run ▁on ▁four ▁cyl ind ers ▁during ▁light ▁load ▁conditions . ▁ ▁Third ▁generation ▁In ▁January ▁ 2 0 1 8 , ▁G M ▁announced ▁an ▁improved ▁version ▁of ▁A FM ▁called ▁Dynamic ▁F uel ▁Management ▁to ▁be ▁initially ▁released ▁in ▁Che vy ▁Silver ado ▁tr uck s . ▁This ▁system ▁sh uts ▁off ▁any ▁number ▁of ▁cyl ind ers ▁in ▁a ▁variety ▁of ▁combinations , ▁maxim izing ▁fuel ▁economy ▁and ▁avoid ing ▁switching ▁between ▁banks ▁of ▁cyl ind ers ▁. ▁The ▁system ▁is