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Thread: GM Z71 Rear end

  1. #1

    Question GM Z71 Rear end

    hey guys i was wonderin if u could help me here because ive gotten mixed answers. i have a 10 bolt rear end in my Z71 and it has never not given me the traction i need when off road but i was wondering wut kind of differential i have in it? of course the entire rear axle is just a stock 10 bolt but i herd somewhere that w/ the Z71 option that you get a locking differential standard. any truth to this? i was just wanting to know and i thought this would be less hassling than pulling the cover off lol

    thanks!
    Payden Parker
    '06 Chevrolet Silverado Z71
    6in. Superlift F.I.T. Lift w/ Bilstein Shock upgrade
    35in. Pro Comp M/T Tires on 17in. Pro Comp Alloy Chrome Wheels U.S. Stryker Series
    AEM Brute Force Air Intake System
    Superchips FlashPaq Tuner
    Magnaflow Exhaust
    Chevy 2500HD Torsion Bars
    AVS Smoked Rain Gaurds
    Paulding County, Georgia
    OC Poole USMC



    THERES NOTHING LIKE THE SMELL OF A NEW TRUCK.....IN THE DIRT!

  2. #2

    Default

    Look in the glove box for the option sheet.

    It should have a lot of numbers.

    They are all the options installed in your truck at the factory.

    I have the 188 page list, ya it’s that long. But I believe Patrick has a link to the list.

    That will tell you what you had in the truck when it was built.

    I forget what the numbers are for the rear axels.

    001 to 009 are axel ratios


    OptCode OptCont Opt OptFamOpt OptNounName OptDesc ActionDat OpRe OwActivityStatus
    001 34660 P RAT M RATIO 3.70 910409 E T T A
    002 34661 P RAT M RATIO 4.11 (4 1/9) 910409 E T T A
    003 34662 P RAT M RATIO 4.33 910409 E T T A
    004 34663 P RAT M RATIO 4.78 940623 E T T A
    005 34664 P RAT M RATIO 4.56 (4 5/9) 910409 E T T A
    006 34665 P RAT M RATIO 4.63 (4 5/8) 960806 E T E A
    007 34666 P RAT M RATIO 3.07 970827 E T E A
    008 34667 P RAT M RATIO 4.88 960806 E T E A
    009 34668 P RAT M RATIO 5.29 910409 E T T A
    00L 34644 P CCL R SECONDARY COLOR EXTERIOR, PRIME 890523 E T E A
    00U 34653 P CCU M PRIMARY COLOR EXTERIOR, PRIME 890523 E T E A
    010 34695 P RAT M RATIO 5.43 910409 E T T A
    011 34696 P RAT M RATIO 5.57 (5 4/7) 910409 E T T A
    012 34697 P RAT M RATIO 5.83 910409 E T T A
    013 34698 P RAT M RATIO 3.73 950213 E T E A
    014 34699 P RAT M RATIO 6.14 (6 1/7) 910409 E T T A
    015 34700 P RAT M RATIO 6.17 910409 E T T A
    016 34701 P RAT M RATIO 5.25 910409 E T T A
    017 34702 P RAT M RATIO 6.50 910409 E T T A
    018 34703 P RAT M RATIO 6.65 890208 E T T A
    019 34704 P RAT M RATIO 6.67 891118 E T T A
    01A 47354 P STC R STRIPE COLOR ACCENT, TWO TONE, SILVER/GUNMETAL (1995) 980622 E T E A
    01L 34680 P CCL R SECONDARY COLOR EXTERIOR, SPECIAL (96) 960118 E 1 E A
    01L 49222 P CCL R SECONDARY COLOR EXTERIOR, STARSILVER III, MET2 (OPEL) (2001) 991102 E 0 E A
    01U 34689 P CCU M PRIMARY COLOR EXTERIOR, SPECIAL (02) 20419 E 1 E A
    020 34731 P RAT M RATIO 5.63 910409 E T T A
    021 34732 P RAT M RATIO 6.83 910409 E T T A
    022 34733 P RAT M RATIO 7.17 910409 E T T A
    02A 47386 P STC R STRIPE COLOR ACCENT, TWO TONE, BEIGE/GARNET (93) 911105 E 1 E A
    02I 34713 P CCM M INTERIOR TRIM MED FIRETHORN RED (I) (97) 970522 E E E A
    02I 49442 P CCM M INTERIOR TRIM COBALT RED (04) 10820 E 1 E A
    02L 34716 P CCL R SECONDARY COLOR EXTERIOR, SPECIAL, CHART NOT REQUIRED 890406 E T E A
    02L 49158 P CCL R SECONDARY COLOR EXTERIOR, FIFTIES GREEN (OPEL) 00 990524 E 0 E A
    02U 34725 P CCU M PRIMARY COLOR EXTERIOR, SPECIAL, CHART NOT REQUIRED 890406 E T E A
    032 34769 P RAT M RATIO 6.29 910409 E T T A
    034 34771 P RAT M RATIO 3.54 950719 E T T A
    035 34772 P RAT M RATIO 3.38 950719 E T T A
    036 34773 P RAT M RATIO 4.44 950719 E T T A
    037 34774 C RAT M RATIO 9.77 950807 E T T A
    038 34775 P RAT M RATIO 6.57 910409 E T T A
    039 34776 P RAT M RATIO 3.55 910409 E T T A
    03A 47356 P STC R STRIPE COLOR ACCENT, TWO TONE, WHITE/DK ROYAL BLUE (94) 920511 E 1 E A
    03L 34752 P CCL R SECONDARY COLOR EXTERIOR, MARBLEHEAD GRAY MET (96) 960118 E 4 E A
    03L 49152 P CCL R SECONDARY COLOR EXTERIOR, CORN YELLOW (00) (OPEL) 990524 E 0 E A
    03Q 34757 P MCI R MOLDING COLOR MARBLEHEAD GRAY MET (95) 971103 E 1 E A
    03T 34760 P VRC R TOP COLOR MARBLEHEAD GRAY MET (95) 971103 E 1 E A
    03U 34761 P CCU M PRIMARY COLOR EXTERIOR, MARBLEHEAD GRAY MET (02) 20419 E 1 E A
    041 34804 C RAT M RATIO 7.39 920218 E T T A
    045 34808 P RAT M RATIO 5.91 910413 E T T A
    049 34812 P RAT M RATIO 5.11 950615 E T T A
    04A 34777 P STC R STRIPE COLOR ACCENT, TWO TONE, RED/DK ROYAL BLUE (94) 920511 E 1 E A
    04F 34782 P FMT R COVERING COLOR FLOOR MAT, CAPPUCCINO CREAM (F) (95) 921030 E 6 E A
    04L 34788 P CCL R SECONDARY COLOR EXTERIOR, BRIGHT WHITE DIAMOND MET (96) 930415 E 4 E A
    04L 49153 P CCL R SECONDARY COLOR EXTERIOR, BREEZE BLUE, MET 2 (00) (OPEL) 990524 E 0 E A
    051 34840 P RAT M RATIO 6.43 950109 E T E A
    052 34841 P TRM M TRIM COMBINATION LEATHER, SHALE (2) (95) 921030 E 6 E A
    053 34842 P RAT M RATIO 3.58 10510 E T E A
    056 34845 P RAT M RATIO 3.23 950921 E T E A
    057 34846 P RAT M RATIO 3.36 910409 E T T A
    058 34847 P RAT M RATIO 5.13 941117 E T E A
    059 34848 P RAT M RATIO 5.14 910409 E T T A
    05A 47323 P STC R STRIPE COLOR ACCENT, TWO TONE, RED/LT BLUE (94) 920511 E 1 E A
    05B 34814 P TRM M TRIM COMBINATION CLOTH, SHALE (B) (95) 921030 E 6 E A
    05F 34818 P FMT R COVERING COLOR FLOOR MAT, SHALE (F) (95) 921030 E 6 E A
    05I 34821 P CCM M INTERIOR TRIM SHALE (I) (95) 980622 E 6 E A
    05I 49436 P CCM M INTERIOR TRIM SHALE/MED DK CASHMERE (I) (04) 10806 E 6 E A
    05L 34824 P CCL R SECONDARY COLOR EXTERIOR, CYCLAMEN (95) 920811 E 1 E A
    05L 48871 P CCL R SECONDARY COLOR EXTERIOR, AZTEC GOLD, MET, OPEL (99) 980622 E 0 E A
    05P 34828 P WHC R WHEEL COLOR ARGENT (91) 890306 E T E A
    05Q 34829 P MCI R MOLDING COLOR CYCLAMEN (95) 930507 E 1 E A
    066 34881 P RAT M RATIO 4.10 (4 1/10) 910409 E T T A
    069 34884 P RAT M RATIO 3.90 910409 E T T A
    06A 47507 P STC R STRIPE COLOR ACCENT, TWO TONE, DK ROYAL BLUE/RED (94) 920623 E 1 E A
    06I 34857 P CCM M INTERIOR TRIM MEDICI RED (I) (97) 980622 E 6 E A
    06L 34860 P CCL R SECONDARY COLOR EXTERIOR, SILVERSTONE MET (95) 930312 E E E A
    06L 48294 P CCL R SECONDARY COLOR EXTERIOR, LT MEDICI RED MET (97) 970425 E E E A
    06L 49154 P CCL R SECONDARY COLOR EXTERIOR, SPACE GREEN, MET 2 (00) (OPEL) 990524 E 0 E A
    06U 49497 P CCU M PRIMARY COLOR EXTERIOR, MARY KAY PEARL III (04) 20418 E E E A
    070 34911 P RAT M RATIO 5.38 (5 3/8) 910409 E T T A
    071 34912 P RAT M RATIO 3.91 941219 E T E A
    073 34914 P RAT M RATIO 5.04 910409 E T T A
    075 34916 P RAT M RATIO 5.86 (5 6/7) 891127 E T T A
    07A 47324 P STC R STRIPE COLOR ACCENT, TWO TONE, DK ROYAL BLUE/LT BLUE (95) 970505 E 1 E A
    07L 34896 P CCL R SECONDARY COLOR EXTERIOR, APPLE GREEN (95) 920811 E 1 E A
    07L 48757 P CCL R SECONDARY COLOR EXTERIOR, MARY KAY PINK (99) 970108 E 4 E A
    07L 49083 P CCL R SECONDARY COLOR EXTERIOR, CARBON BLACK, BERTONE (00) 981120 E 0 E A
    086 34953 P RAT M RATIO 9.08 910409 E T T A
    08A 47388 P STC R STRIPE COLOR ACCENT, TWO TONE, DK ROYAL BLUE/WHITE (94) 920623 E 1 E A
    08L 34932 P CCL R SECONDARY COLOR EXTERIOR, MARY KAY PINK (96) 960118 E E E A
    08L 48999 P CCL R SECONDARY COLOR EXTERIOR, URAL MOUNTAIN, MICA (00) (OPEL) 980805 E 0 E A
    08U 34941 P CCU M PRIMARY COLOR EXTERIOR, MARY KAY PINK (02) 20419 E 3 E A
    090 34983 P RAT M RATIO 3.08 991116 E T E A
    092 34985 P RAT M RATIO 4.30 910409 E T T A
    09A 46951 P STC R STRIPE COLOR ACCENT, TWO TONE, WHITE/DK SAPPHIRE (91) 891025 E 1 E A
    09L 48268 P CCL R SECONDARY COLOR EXTERIOR, CRIMSON KING (97) 940414 E 4 E A
    09L 48759 P CCL R SECONDARY COLOR EXTERIOR, MARY KAY PEARL (99) 970108 E 4 E A
    09L 48998 P CCL R SECONDARY COLOR EXTERIOR, METEOR GRAY, MICA (00) (OPEL) 980805 E 0 E A
    09U 48267 P CCU M PRIMARY COLOR EXTERIOR, CRIMSON KING (02) 20419 E 4 E A
    Page 1
    And that’s just the first page.

    Technology is great, when it Works,
    And one Big Pain in the Ass When it Doesn’t.
    Detroit Iron Rules, All the Rest are Just Toys.
    94 GMC Burban, 5.7L (350), 4X4, Auto
    86 GMC Burban, 350, 2 WD, Auto
    79 GMC pickup plow truck, 400, Full time 4X4, Auto
    86 Pontiac Fiero SE, 2.8L, Auto, only mid engine American car
    See a Pattern yet?

    15 year GM assembly line worker.

  3. #3

    Default

    thanks for the help man i really appreciate it!

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