looks like to many options for a wt its more of a ls or lt

 

http://www.rpocodes.com

 

The information by your user name says 2011 GMC Sierra 1500 v8 5.3 4x4 SLE. The trim package is SLE, which is definitely not the WT package. Your tranny cooler should be on the front of your radiator. Z85 is your heavy duty trailering suspension. The locker is not selectable. It will come on automatically, but im not sure if it is considered LSD.

 

The GM G80 locked is not a limited slip differntial. Its a mechanical locker by Eaton.

The only trucks/SUV's to ever get a limited slip is the Quadrasteer and the was option code G86. Limited slip is more of a performance axle so its common option on Camaro, CTS-V etc.

KW1 alternator is a upgrade to handle the extra load of the snow plow, when equipped

TRW is a wire lead to power a roof mounted beacon or strobe warning lights, if you want to drill a hole thru the roof and mount one.

Work Truck 1SA denotes what is standard and what can be ordered as options. less standard equipment as 2SA=SL, 3SA=SLE, 4SA=SLT

 

PCX comes up as Control- Sales item number 115 (I don't know what that is)

UQ3 is performance enhanced audio. (I have it on my WT, its slightly better speakers than stock, but not Bose)

YD3 comes up Axle- (Base equip) for scheduling GVW plate (no clue what it means)

 

The SA codes
Control Sales item is internal not an option on the truck

 

R9U - GM ACCESS - AUTOBOOK IDENTIFIER (Control, Sales Item #95)

and the most well known Control Sales Item

R8C Control sales item 53 National Corvette Museum delivery

R6A Control sales item 1
R6B Control sales item 2
R6C Control sales item 3
R6D Control sales item 4
R6E Control sales item 5
R6F Control sales item 6
R6G Control sales item 7
R6H Control sales item 8
R6I Control sales item 9
R6J Control sales item 10
R6K Control sales item 11
R6L Control sales item 12
R6M Control sales item 13 New Jersey cost surcharge
R6N Control sales item 14
R6P Control sales item 15
R6Q Control sales item 16
R6R Control sales item 17
R6S Control sales item 18
R6T Control sales item 19
R6U Control sales item 20
R6V Control sales item 21
R6W Control sales item 22
R6X Control sales item 23
R6Y Control sales item 24
R6Z Control sales item 25
R7A Control sales item 26 special option processing
R7B Control sales item 27
R7C Control sales item 28
R7D Control sales item 29
R7E Control sales item 30
R7F Control sales item 31
R7G Control sales item 32
R7H Control sales item 33
R7I Control sales item 34
R7J Control sales item 35
R7K Control sales item 36 Special option processing
R7L Control sales item 37
R7M Control sales item 38
R7N Control sales item 39
R7P Control sales item 40
R7Q Control sales item 41
R7R Control sales item 42
R7S Control sales item 43
R7T Control sales item 44
R7U Control sales item 45
R7V Control sales item 46
R7W Control sales item 47
R7X Control sales item 48
R7Y Control sales item 49
R7Z Control sales item 50
R8A Control sales item 51
R8B Control sales item 52
R8C Control sales item 53 National Corvette Museum delivery
R8D Control sales item 54
R8E Control sales item 55
R8F Control sales item 56
R8G Control sales item 57
R8H Control sales item 58
R8I Control sales item 59
R8J Control sales item 60
R8K Control sales item 61
R8L Control sales item 62
R8M Control sales item 63
R8N Control sales item 64
R8P Control sales item 65
R8Q Control sales item 66
R8R Control sales item 67
R8S Control sales item 68
R8T Control sales item 69
R8U Control sales item 70
R8V Control sales item 71
R8W Control sales item 72
R8X Control sales item 73
R8Y Control sales item 74
R8Z Control sales item 75
R9A Control sales item 76
R9B Control sales item 77
R9C Control sales item 78
R9D Control sales item 79
R9E Control sales item 80
R9F Control sales item 81
R9G Control sales item 82
R9H Control sales item 83
R9I Control sales item 84
R9J Control sales item 85
R9K Control sales item 86
R9L Control sales item 87
R9M Control sales item 88
R9N Control sales item 89
R9P Control sales item 90
R9Q Control sales item 91
R9R Control sales item 92
R9S Control sales item 93
R9T Control sales item 94
R9U Control sales item 95
R9V Control sales item 96
R9W Control sales item 97
R9X Control sales item 98
R9Y Control sales item 99
R9Z Control sales item 100

 

looks like to many options for a wt its more of a ls or lt

VIN code calls mine WT. Looking at it I don't know what else one WOULD call it. Has 60 RPO codes on the sticker too.

 

Some info for you,

KNP - Cooling, external transmission oil cooler - The cooler is usually located in front of the engine radiator. Size is about 9"X6".

Z85 - Designed for enhanced handling and trailer towing, with 46mm-piston, monotube shocks and a 34mm front stabilizer bar

Cf

 

I had some issues when trying to decode my RPOs. I found there was a lot of discrepancies in the online information depending on what site you looked at. Your best bet is a VIS(vehicle information sheet). This can be obtained with your vin number at your dealer parts dept. or from a customer service rep here. Good Luck.