Cab Chassis option lists decoding can be difficult at times.
You got a RPO “C7E” which is a code for “heavy duty chassis equipment” rated at GVWR 11,000 lbs. rating but you also got a RPO “G52” which gives you extra extra high-capacity rear springs rated at 15,000 lbs. GVWR - I assume that the G52 option overrides the C7E base option.
But here is the confusing part - the 4th digit in your VIN is “J” and that indicates that the chassis has a GVWR of 14,000 lbs.
Anyone else got any cab chassis SPID sheets they can post a pic of ?