Chevy express 2004 code p0016 - 2004 Chevrolet Express

SOURCE: 2004 chevy 3500 express passenger van transmission

if ur replacing it remove front grill disconnect both lines and carefully remove retaining clips from radiator if replacement is original eguipt mount & reconnect --if its a universal follow instructions usually cut off fittings and use clamps and hose to hook up

SOURCE: 2004 chevy tb with 4200 motor have codes pop up p0014 n p0016

ck timing , have you had a head gasket replaced before this issue? I have seen clogged cats cause to much back pressure and making timing jump a tooth . or you have timing out due to timing gears or stretched chain . Do you have any bearing noise coming from the motor ?