mine has the same dents, its from the previous owner not latching the tire carrier all the way then DRIVING IT!! and for anyone wondering this is what makes a ZR2 a ZR2...

Ladder Type Frame with Modified Mounting Points
100mm wider track
Increased Ground Clearance (Approx 3")
Enhanced front (7.25" ring gear) and rear (8.5" ring gear) axles w/ 3.73:1 rear-axle ratio with rear limited slip Auburn Cone style clutch
Larger wheel and axle bearings
31 x 10.50" BFG A/T Tires (Pickup), 31 x 10.50" BFG Longtrails (Blazer)
Fender Flares (Spectra Gray on the Chevrolet Models, despite body color. Body color on all GMC Models)
46mm gas pressurized Bilstein Monotube shocks
Rear Track Bar (Pickup), Front Anti-Sway Bar (Blazer)
Skid Plates
Full Size Spare Tire

 

Nice info and what makes a zr2 a zr2, good to know, considering I just got one a month ago.

 

all of the 2nd gens regular blazers have a "skid" plate, and a full size spare

 

Here is the build sheet for that VIN#
1GNCT18W12K182731
VEHICLE BUILD
Merchandising Model : CT10516 -2002 2-DOOR 4WD BLAZER LS
Gross Vehicle Weight Rating : 2202 kg (4855 lb)
Order Number : DWGV5G
Build Date : 02/15/2002
Build Plant : 12K16
OPTION CODES
AJ1 - DEEP TINTED GLASS
AM7 - SPLIT FOLDING REAR SEAT
AU0 - REMOTE KEYLESS ENTRY
AU3 - POWER DOOR LOCK SYSTEM
AV5 - RECLINING HIGHBACK BUCKET SEATS
AXP - MPV VIN IDENT POSITION
A31 - POWER WINDOWS
B30 - FULL FLOOR CARPETING
CTF - INTERIM RADIO ENHANCEMENTS
C25 - REAR WINDOW WIPER & WASHER
C49 - ELECTRIC REAR WINDOW DEFOGGER
C6I - GVW RATING - 4850 LB
C60 - AIR CONDITIONING
DK2 - ELECTRIC OSRV MIRROR W/DEFOGGER
D34 - VISOR MIRRORS
D55 - FLOOR CONSOLE W/DUAL CUPHOLDERS
EVA - EVAP EMISSION REQUIREMENT
E55 - TAILGATE BODY
FE9 - 50-STATE LOW EMISSION VEHICLE
FF4 - TORSION BAR SPRING ADJUSTMENT
FK3 - TORSION BAR SPRING ADJUSTMENT
GU6 - REAR AXLE 3.42 RATIO
G80 - LOCKING DIFFERENTIAL-REAR AXLE
JC1 - FOUR WHEEL DISC BRAKES
K34 - ELECTRONIC SPEED CONTROL WITH RESUME SPEED
K60 - 100 AMP DELCOTRON GENERATOR
LIN - LINDEN ASSEMBLY PLANT
L35 - VORTEC 4300 V6 SFI ENGINE
M50 - 5 SPEED MANUAL TRANSMISSION
NF7 - FEDERAL EMISSION SYSTEM NLEV
NP1 - ELECTRONIC SHIFT TRANSFER CASE
N33 - COMFORTILT STEERING WHEEL
N40 - POWER STEERING
PA3 - FLAT 5-SPOKE ALUMINUM WHEELS
P16 - OUTSIDE SPARE WHEEL AND TIRE CARRIER
QEB - P235/75R 15 OOR WL TIRES
RSA - PASSIVE AUTO FRT SEAT RESTRAINT
SLM - STOCK ORDERS
T61 - DAYTIME RUNNING LIGHTS
UN0 - ETR AM/FM STEREO WITH SEEK/SCAN DIGITAL CLOCK, THEFT LOCK, SPEED COMPENSATED VOLUME, COMPACT DISC AND AUTO TONE CONTROL (REPLACES STD/OPT PKG RADIO)
UP8 - STEREO RADIO PROVISIONS
U16 - TACHOMETER
U73 - FIXED MAST ANTENNA
U89 - WIRING HARNESS - 5 LEAD
VXS - COMPLETE VEHICLE LABEL
V54 - BLACK ROOF LUGGAGE CARRIER
V73 - STATEMENT OF VEHICLE CERT.-U.S. /CANADA
XEB - P235/75R 15 OOR WL FRT TIRES
X88 - CHEVROLET CONVERSION
YD3 - BASE EQUIP FOR SCH GVW PL-FT AX
YD5 - BASE FRONT SPRING
YD6 - BASE REAR SPRING
YEB - P235/75R 15 OOR WL REAR TIRES
ZEB - P235/75R 15 ON/OFF SPARE TIRE
ZM8 - REAR WINDOW CONVENIENCE PACKAGE * ELECTRIC TAILGATE RELEASE * REAR WINDOW DEFOGGER * REAR WINDOW WIPER/WASHER
ZQ3 - TILT WHEEL & SPEED CONTROL
ZQ6 - POWER CONVENIENCE GROUP * POWER WINDOWS * POWER DOOR LOCKS * POWER HEATED OUTSIDE REARVIEW MIRRORS * REMOTE KEYLESS ENTRY
ZY1 - SOLID PAINT
Z85 - TOURING SUSPENSION
1SB - PREFERRED EQUIPMENT GROUP 1SB CONSISTS OF: * DEEP TINTED GLASS * REAR WINDOW CONVENIENCE PKG * TILT STEERING & SPEED CONTROL * PWR WINDOWS/LOCKS/HTD MIRRORS
1SZ - DISCOUNT RADIO/SUNROOF OFFER
11U - LT PEWTER METALLIC
12H - GRAPHITE CUSTOM CLOTH
12I - GRAPHITE INTERIOR TRIM
6WJ - FRONT SUSPENSION
7WJ - FRONT SUSPENSION

 

Correct, but their are skid plates under the front of the engine (which all blazers have but ZR2 Blazers have aluminum ones opposed to plastic up to 98 then carbon fiber 99and up) and ZR2's have a transmission skid plate (aluminum 98- and carbon fiber 99+).

 

sorry, but you're wrong on that one Ryan.

my '98 4 door LT has the full 3 skid plates package on it (front, oil, and t-case), and they're naturally aluminum. pretty soon i'm gonna have my trans covered too (God i hate automatic's)

my '92 Jimmy also came with the full 3 skid plate package on it (of course aluminum as well).

and yet my youngest brother's '94 Jimmy doesn't have anything beyond the crapy plastic front skid plate only.

i even had aluminum plates on a '88 i picked up to strip.

try and figure out the way these trucks were equipped, and you'll probably be able to pick the winning #'s for the lottery.

 

I am going to have to partially agree with Ryan. There were certain packages that put the skid plates on, but as standard, nothing but the plastic air dam. I refuse to call that a skid plate because about the only thing they'll skid along is snow and light mud. Rocks, ice, or thick mud and they'll crack.

That whole optional vs. standard thing...

 

but Kyle, the way Ryan put it, it came across that he was saying only the ZR's came with the full aluminum 3 skid plate set-up.

and i'd like to see a pic of an actual trans pan skid plate-NOT the one for the t-case, but the one Ryan mentioned. not that i don't believe you Ryan, but if their is one available, it might just be cheaper to buy, than the one i'm designing.

 

That truck is not a ZR2 but It should have a Cast Iron front diff.

 

only the 5 speed ZR2's came with a cast iron front pumpkin.