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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. Jmangmc

    New question (so sorry)

    Jmangmc, Mar 7, 2021 at 6:12 PM
    Replies:
    –
    Views:
    –
    N/A
  2. Blueinterceptor

    Was there a problem with the max towing

    Blueinterceptor, Mar 2, 2021 at 11:28 PM
    Replies:
    5
    Views:
    358
    Toasty
    Mar 7, 2021 at 12:23 PM
  3. Fireman591

    5.3 V8 valve spring issues?

    Fireman591, Dec 29, 2020 ... 2 3 4
    Replies:
    39
    Views:
    4,305
    Fireman591
    Mar 7, 2021 at 7:48 AM
  4. Campingfamco

    Gas Capacity

    Campingfamco, Jan 18, 2021 ... 2
    Replies:
    18
    Views:
    1,831
    swathdiver
    Mar 6, 2021 at 1:37 AM
  5. robgreg75

    2021 Tahoe with 6k miles mine has already had a head off

    robgreg75, Mar 1, 2021
    Replies:
    7
    Views:
    469
    Fireman591
    Mar 6, 2021 at 12:57 AM
  6. Meyersrl

    2021 Yukon Denali Trailer Brake Control Disconnect

    Meyersrl, Feb 27, 2021
    Replies:
    3
    Views:
    320
    Tiredmechanic23
    Mar 5, 2021 at 10:51 PM
  7. eshahak

    Oil Catch Can

    eshahak, Jan 20, 2021 ... 2
    Replies:
    16
    Views:
    1,925
    Gibby13
    Mar 3, 2021 at 4:09 AM
  8. robgreg75

    2021 Z71 air suspension error

    robgreg75, Mar 1, 2021
    Replies:
    0
    Views:
    128
    robgreg75
    Mar 1, 2021
  9. Syniba

    2021 Yukon Denali - Auto stop/start - any news on disabling automatically?

    Syniba, Sep 7, 2020 ... 2 3
    Replies:
    22
    Views:
    8,724
    Vannmccullar
    Feb 25, 2021
  10. Leon00000

    GM lying about fuel rating, or i drive it too hard?

    Leon00000, Feb 9, 2021 ... 2 3
    Replies:
    20
    Views:
    2,119
    Campingfamco
    Feb 25, 2021
  11. Newby

    2wd vs. 4wd - 2021 yukon

    Newby, Feb 10, 2021 ... 2 3
    Replies:
    28
    Views:
    1,994
    avalonandl
    Feb 23, 2021
  12. Aksab

    2021 transmission 1-2 shift

    Aksab, Sep 26, 2020 ... 2
    Replies:
    13
    Views:
    2,009
    Jsenky
    Feb 22, 2021
  13. Rich3

    2021 Denali died while on the road - 292 total miles

    Rich3, Dec 26, 2020 ... 5 6 7
    Replies:
    64
    Views:
    8,631
    Northern Mi Rich
    Feb 14, 2021
  14. Northern Mi Rich

    Battery Gauge Bouncing Between 11.5-15

    Northern Mi Rich, Feb 8, 2021
    Replies:
    9
    Views:
    469
    Bill 1960
    Feb 11, 2021
  15. Z71orAT4

    GMC AT4 Availability?

    Z71orAT4, Sep 29, 2020 ... 2 3
    Replies:
    25
    Views:
    2,861
    wsteele
    Feb 9, 2021
  16. Goldenbear03

    AT4 Gas Mileage

    Goldenbear03, Jan 21, 2021 ... 2
    Replies:
    11
    Views:
    1,352
    Goldenbear03
    Feb 4, 2021
  17. Northern Mi Rich

    Auto Stop Not Working (yeah?)

    Northern Mi Rich, Feb 3, 2021
    Replies:
    3
    Views:
    384
    RugbyRef
    Feb 4, 2021
  18. Blueinterceptor

    Limited slip differential 20 v 21

    Blueinterceptor, Aug 13, 2020 ... 2 3
    Replies:
    24
    Views:
    6,237
    Jsenky
    Jan 19, 2021
  19. RockyMountainHoe

    Full Exhaust or replace muffler?

    RockyMountainHoe, Dec 1, 2020
    Replies:
    6
    Views:
    1,639
    Raptor Tahoe
    Jan 18, 2021
  20. Kade Yukon

    After changing alternator bad shudder when accelerating

    Kade Yukon, Jan 16, 2021
    Replies:
    5
    Views:
    345
    exp500
    Jan 17, 2021
  21. Fireman591

    Check Your Engine Oil Level!!!!!

    Fireman591, Dec 9, 2020 ... 2 3
    Replies:
    22
    Views:
    3,517
    iamdub
    Jan 16, 2021
  22. Vannmccullar

    Disabling the auto shut down feature

    Vannmccullar, Dec 20, 2020 ... 2
    Replies:
    15
    Views:
    2,189
    TrueAt1stLight
    Jan 13, 2021
  23. BTSRT

    2021 Tahoe/Yukon/Escalade Wilwood Brakes

    BTSRT, Jan 6, 2021
    Replies:
    3
    Views:
    810
    BTSRT
    Jan 12, 2021
  24. GMCSwurvn

    Rear main seal

    GMCSwurvn, Jan 8, 2021
    Replies:
    2
    Views:
    497
    PNW VietVet
    Jan 8, 2021
  25. Sinewave

    Can anyone identify what this fuse is for?

    Sinewave, Jan 1, 2021
    Replies:
    5
    Views:
    482
    Doubeleive
    Jan 2, 2021
  26. TolaxSJC

    Judder on full lock - 4WD only

    TolaxSJC, Dec 29, 2020
    Replies:
    9
    Views:
    715
    wjburken
    Dec 29, 2020
  27. gilboyj

    5.3 v 6.2 daily use and mpg

    gilboyj, Oct 31, 2020 ... 2 3 4
    Replies:
    36
    Views:
    6,271
    Fireman591
    Dec 29, 2020
  28. Stbentoak

    Just how capable is the Tahoe/Yukon/Esky 4wd system?

    Stbentoak, Dec 27, 2020
    Replies:
    2
    Views:
    667
    Stbentoak
    Dec 28, 2020
  29. Quark

    What gas mileage are we getting on the 21s?

    Quark, Aug 19, 2020 ... 2 3
    Replies:
    22
    Views:
    4,267
    Jsenky
    Dec 22, 2020
  30. captain

    Tahoe Diesel

    captain, Dec 7, 2020
    Replies:
    5
    Views:
    2,082
    Fireman591
    Dec 15, 2020
Showing threads 1 to 30 of 50

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