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Engine & Drivetrain

Discuss engine and drivetrain items from brakes, transmissions, towing, error codes, anything in the engine bay and so on here.

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  1.    
  2. ScottyBoy

    07+ Brake upgrade on a 00-06 NBS, is it worth it?

    ScottyBoy, Jun 6, 2016 ... 39 40 41
    Replies:
    402
    Views:
    114,924
    TheAutumnWind
    Aug 28, 2020
  3. Chads93GT

    No oil pressure at start up, 2001 Tahoe

    Chads93GT, Dec 11, 2014 ... 7 8 9
    Replies:
    86
    Views:
    22,623
    Supergmc
    Feb 11, 2020
  4. JKmotorsports

    Ordered my 6.0

    JKmotorsports, Aug 8, 2009 ... 40 41 42
    Replies:
    416
    Views:
    88,880
    Lee Dutton
    Oct 3, 2016
  5.    
  6. ladorn45

    Fuel pump suggestions

    ladorn45, Sep 25, 2020 at 4:54 PM ... 2
    Replies:
    10
    Views:
    144
    ladorn45
    Oct 1, 2020 at 5:07 PM
  7. 2007 Denali XL

    Dying on idle.

    2007 Denali XL, Jul 10, 2020 ... 3 4 5
    Replies:
    44
    Views:
    1,148
    treehan77
    Oct 1, 2020 at 4:29 PM
  8. ROGELIO A GUZMAN

    Any tips for better mpg

    ROGELIO A GUZMAN, Sep 29, 2020 at 12:33 AM ... 2 3
    Replies:
    24
    Views:
    740
    bill1013
    Oct 1, 2020 at 2:26 PM
  9. skyhighsami

    Worth it to go from 3.73 to 4.11

    skyhighsami, Sep 30, 2020 at 6:36 PM ... 2 3
    Replies:
    20
    Views:
    252
    Dantheman1540
    Oct 1, 2020 at 1:34 PM
  10. ROGELIO A GUZMAN

    hd fan clutch vs severe duty fan clutch

    ROGELIO A GUZMAN, Oct 1, 2020 at 2:00 AM
    Replies:
    1
    Views:
    49
    PNW VietVet
    Oct 1, 2020 at 5:31 AM
  11. RefireMetallic

    02 Yukon Denali PO420 Code

    RefireMetallic, Jul 14, 2020 ... 2
    Replies:
    12
    Views:
    513
    Vetkllr
    Oct 1, 2020 at 3:48 AM
  12. Matthew Jeschke

    Home built 4L60E beast

    Matthew Jeschke, Sep 13, 2020 ... 4 5 6
    Replies:
    50
    Views:
    1,460
    Matthew Jeschke
    Oct 1, 2020 at 3:46 AM
  13. Jlaughtr

    Tru-Cool Max 40k Transmission Cooler

    Jlaughtr, Jul 15, 2020 ... 6 7 8
    Replies:
    74
    Views:
    4,194
    PNW VietVet
    Oct 1, 2020 at 12:08 AM
  14. theangrynortherne

    Engine redux

    theangrynortherne, Sep 10, 2020 ... 2
    Replies:
    10
    Views:
    283
    theangrynortherne
    Sep 29, 2020 at 11:35 PM
  15. Thouse

    Little noob wants to change spark plugs

    Thouse, Sep 24, 2020 ... 2 3
    Replies:
    20
    Views:
    497
    wjburken
    Sep 29, 2020 at 12:04 PM
  16. Larryjb

    Rear Main Oil Seal

    Larryjb, Mar 15, 2020 ... 15 16 17
    Replies:
    160
    Views:
    9,397
    Larryjb
    Sep 28, 2020 at 5:30 PM
  17. K9Gunner

    Engine flush

    K9Gunner, Sep 24, 2020
    Replies:
    8
    Views:
    328
    Rocket Man
    Sep 28, 2020 at 4:27 PM
  18. ROGELIO A GUZMAN

    160 degree thermostat

    ROGELIO A GUZMAN, Sep 26, 2020 at 9:14 PM
    Replies:
    8
    Views:
    348
    PNW VietVet
    Sep 28, 2020 at 1:17 PM
  19. silky28

    Runs like crap after plug change

    silky28, Sep 21, 2020 ... 2 3
    Replies:
    21
    Views:
    802
    Rocket Man
    Sep 28, 2020 at 12:25 PM
  20. Keiterburb

    Intermittent Rear end noise 2003 Z71

    Keiterburb, Sep 26, 2020 at 10:16 AM
    Replies:
    9
    Views:
    146
    PNW VietVet
    Sep 26, 2020 at 2:19 PM
  21. jonnytahoe

    RWD Transmission Output Shaft

    jonnytahoe, Sep 25, 2020 at 12:44 PM
    Replies:
    1
    Views:
    50
    PNW VietVet
    Sep 25, 2020 at 1:22 PM
  22. Sdp1234

    Towing Transmission Temp Question

    Sdp1234, Sep 24, 2020
    Replies:
    7
    Views:
    145
    S33k3r
    Sep 25, 2020 at 12:08 AM
  23. Sstevieboy0208

    2005 suburban 5.3 surging on highway under load

    Sstevieboy0208, Sep 17, 2020 ... 2 3 4
    Replies:
    32
    Views:
    555
    Sstevieboy0208
    Sep 24, 2020
  24. BoatGuyVB

    6.0 or 8.1

    BoatGuyVB, Sep 5, 2020 ... 2
    Replies:
    11
    Views:
    496
    bigdog9191999
    Sep 23, 2020
  25. Blackout7c

    O2 sensor issues with LT headers?

    Blackout7c, Sep 18, 2020 ... 2
    Replies:
    18
    Views:
    353
    Blackout7c
    Sep 22, 2020
  26. Farmer Rob

    AC fuse keeps blowing.

    Farmer Rob, Sep 15, 2020
    Replies:
    5
    Views:
    147
    PNWTahoe
    Sep 21, 2020
  27. SouthernDuke

    More 4L80E discussion

    SouthernDuke, Sep 16, 2020
    Replies:
    3
    Views:
    181
    PNWTahoe
    Sep 21, 2020
  28. mijohnst

    Brake Line replacement question

    mijohnst, Jul 29, 2020 ... 2 3
    Replies:
    25
    Views:
    1,023
    mijohnst
    Sep 21, 2020
  29. ROGELIO A GUZMAN

    Replacing 04 yukon xl 6.0 radiator any upgrades recommend

    ROGELIO A GUZMAN, Sep 21, 2020
    Replies:
    3
    Views:
    109
    ROGELIO A GUZMAN
    Sep 21, 2020
  30. ROGELIO A GUZMAN

    trans coolers

    ROGELIO A GUZMAN, Sep 21, 2020
    Replies:
    2
    Views:
    108
    ROGELIO A GUZMAN
    Sep 21, 2020
  31. mattt

    Did a 6.0 swap in your 1/2T....what cam did you use in the 6.0?

    mattt, Sep 15, 2020 ... 2
    Replies:
    12
    Views:
    462
    91RS
    Sep 20, 2020
  32. Victor arroyo

    2002 z71 Tahoe not going into overdrive

    Victor arroyo, Sep 19, 2020
    Replies:
    2
    Views:
    81
    PNW VietVet
    Sep 20, 2020
  33. anthonyragazzo3

    What cam should i get

    anthonyragazzo3, Sep 17, 2020 ... 2
    Replies:
    11
    Views:
    327
    Bear77
    Sep 19, 2020
  34. 4WDTRK

    Service Brake System DIC message

    4WDTRK, Sep 14, 2020
    Replies:
    2
    Views:
    104
    Doubeleive
    Sep 17, 2020
  35. ThwopKing

    So I guess im starting a 5.3 rebuild project.....

    ThwopKing, Sep 11, 2020
    Replies:
    3
    Views:
    187
    ThwopKing
    Sep 17, 2020
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