Chiclayo is a city in the north of Peru.
North towards Piura
If in the downtown area, take a mototaxi (1.00 USD) to the "Grifo Salida Norte." They will leave you in a good spot for hitchhiking, but what they say is a sketchy part of town.
South towards Lima
You can take a mototaxi or walk all the way out from the city on the Panamericana Sur, stick a thumb up and you should get a ride within 30 min. Doesn´t matter much were, because the side of the road is wide, lorries can pull over anywhere. Yep, lorries are your best option, most of them go to Trujillo or Lima, so you can cover good distance.
Places to avoid
Accommodation and Sleep
Other useful info
You can check out the Señor de Sipan archaeological site here.