Jump to content

6.6L Gas Transmissions: 6l90 vs. 10L1000

Coop8202

By Coop8202
February 11, 2025 in 6.6L Gas V8 (L8T)

Share

https://www.gm-trucks.com/forums/topic/270990-66l-gas-transmissions-6l90-vs-10l1000/

Recommended Posts

Senior Enthusiast

Pryme

Posted March 18

Posted March 18 (edited)

5 minutes ago, topdj said:

Keep them 6l90 cool and avoid jack rabbit starts. I added bypass and deep aluminum pan. 2021 hd

I had a L5p 2017 transmission was excellent.

Yeah I think driving it with a big lead foot is never good long term. I get my excitement from my motorcycle. I drive the truck very relaxed and slow because it is slow even when trying to go fast so there’s no point.

Edited March 18 by Pryme

1

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Share

https://www.gm-trucks.com/forums/topic/270990-66l-gas-transmissions-6l90-vs-10l1000/

Go to topic listing

Similar Content
- Issue 2003 Gmc Sierra 2500hd 4x4 6 inch Cognito lift issues
  
  By Marshall Pay, July 31, 2025
  - lift
  - ride height
  - (and 9 more)
    
    Tagged with:
    
    lift
    
    ride height
    
    suspension
    
    cognito
    
    6inchlift
    
    Sierra
    
    2500HD
    
    2003 gmc
    
    6.6L Duramax
    
    4X4
    
    issue
  - 0 replies
  - 458 views
- NV4500 Rattle/Grinding Noise
  
  By Coop8202, June 25, 2025
  - nv4500
  - transmission
  - (and 5 more)
    
    Tagged with:
    
    nv4500
    
    transmission
    
    rattle
    
    manual
    
    2500HD
    
    Chevy
    
    Silverado
  - 1 reply
  - 777 views
- Aftermarket Keyless entry ‘23 2500HD WT
  
  By LegitAB, June 24, 2025
  - 2500HD
  - 3500HD
  - (and 1 more)
    
    Tagged with:
    
    2500HD
    
    3500HD
    
    2023
  - 3 replies
  - 795 views
- Torque converter
  
  By 22 6.6gasser, June 20, 2025
  - 6l90e
  - transmision
  - 4 replies
  - 1,844 views
- 2022 tapping near oil pan after oil change
  
  By 22 6.6gasser, June 12, 2025
  - Tapping
  - knocking
  - (and 4 more)
    
    Tagged with:
    
    Tapping
    
    knocking
    
    6.6l gas
    
    Transmission
    
    engine noise
    
    torque converter
  - 0 replies
  - 855 views
Recently Browsing 0 members
- No registered users viewing this page.
Forum Statistics

250.4k
Total Topics

2.7m
Total Posts
Member Statistics

342,768
Total Members

8,960
Most Online

Newest Member
LeeBob
Joined 8 hours ago
Who's Online 0 Members, 0 Anonymous, 1,386 Guests (See full list)
- There are no registered users currently online

Latest Articles
- Next-Gen 2027 GMC Sierra 1500 Revealed: Gen-6 V8s, Motorized Displays, and a Major Trim Shake-Up
  Thursday at 03:00 PM
- 1996 Chevy Blazer vs 2026 Blazer: Epic Head-to-Head Crash
  Wednesday at 07:57 PM
- Chevy Revives Iconic “Heartbeat of America” Campaign
  Wednesday at 02:54 PM
- 2027 Chevrolet Silverado: Every Official Photo
  June 18
Posts
- 2027 GMC Sierra: Official Discussion
  
  By C/K Man · Posted 58 minutes ago
  
  GM is moving away from the wax frame coating: https://gmauthority.com/blog/2026/06/2027-chevy-silverado-gmc-sierra-1500-get-new-frame-coating/
- Navigating senior years.
  
  By txab · Posted 2 hours ago
  
  What pain meds are you on?
- 2007 Sierra OBDC II codes unknown
  
  By davester · Posted 2 hours ago
  
  charm.li (website) should have driving instructions for each of the monitors, so increase the likelyhood that the conditions are right for the monitor to run it's test procedure.
- Bent valve in 2025 GMC Canyon Denali - Requires engine swap at 14K miles
  
  By davester · Posted 2 hours ago
  
  Lemon law depends on where the truck was bought and/or where it's registered, as the laws vary quite a bit across different jurisdictions in the US.
- Gas Prices
  
  By richard wysong · Posted 4 hours ago
  
  $4.57 regular on the turnpike, $5.39 diesel, filled the truck local this am, $3.69
GM-Trucks.com Clubs
- Black Truck Club
  
  Open Club · 612 members
- White Truck Club
  
  Open Club · 380 members
- Canadian Owners Club
  
  Open Club · 282 members
- Red Truck Club
  
  Open Club · 156 members
- diesel 3.0
  
  Open Club · 279 members
- Texas Owner's Group
  
  Open Club · 371 members
- NorthSky Blue Club
  
  Open Club · 118 members
- Midwest Owner's Group
  
  Open Club · 212 members
- 2015 Custom Sport Club
  
  Open Club · 5 members
- GM Snow Plowing Club HD
  
  Closed Club · 14 members
Popular Contributors
- Week
- Month
- Year
- All Time
1. 1
  
  Atlas
  15
2. 2
  
  newdude
  10
3. 3
  
  Grumpy Bear
  10
4. 4
  
  Z45
  6
5. 5
  
  KARNUT
  6
Show More

×

Forums
Main Site
Newsroom
Road Tests
Clubs
Gallery
Activity
- Back
- All Activity
- Search
Tools
More
- Back
- Guidelines
- Staff
- Leaderboard
- Online Users

×

Create New...