This sticky is for links to the most asked about questions, info, specs and general knowledge of the Drivetrain.
If you see a thread that should be considered to be added here, click on the <Report> button with a note indicating that it should be added.
General
Drivetrain fluids specifications
Gearing RPO codes
Transmission
4L60E list of failures and causes
4L60E Trouble Codes Diagnostic Parameters Chart
4L60E Technical Reference Document PDF
Video: Common 4L60E failures
Identifying Deep or Shallow pan and this one with a picture
Removing Trans for main seal leak.
Flex plate cracked: do I need to pull transmission?
Key points for 4l60E removal/installation on 4.2L GMT360
Slight hesitation or bucking in 4th gear (PWM shudder)
Transmission Coolers..
Best Brand transmission fluid?
Transmission Fluid Exchange (Flush)
4L60E valve body upgrade kit, AKA P1870 "code buster"
Code Buster shift kit installation (OffRoadTB.com)
Transmission fix for throwing code when using overdrive (P0894/P1870)
REPLACING RUSTY TRANSMISSION LINES with Russell Hose and Hose ends
Transmission with multiple codes
Another Transmission with Multiple codes
More Multiple Codes
The 5 Transmission p codes
Replacing transmission lines
Transmission cooler lines R&R
Transmission line change project notes
TCC PWM solenoid modification to eliminate PWM
4x4 and AWD System
GM Transfer Case Parts & Information PDF
4WD not working? Step inside.
Hard to remove front disconnect
Power Stop/Kinetic wheel bearing hubs? (Brand/quality comparisons)
AWD/4x4 front diff permanent disable
Disconnect rebuild (OffRoadTB.com)
How to change Transfer Case Encoder Motor
Stripped Intermediate Shaft
Converting from AWD to 4x4 Transfer Case (9-7x, Bravada, Rainier)
How to remove front axles
Transfer Case Bench Testing NP226
Differentials
Determining your gear ratio
Rear axle shafts 06+
Front diff question (Stripped intermediate shaft)
Front diff fill plug
Rear Diff Fill Plug(Removing stripped plug)
Questions on removing stripped rear diff. fill plug with air ...
Rear Differential Cover Bolt Size
How to identify gearing and differential size
Rear diff fluid swap / inspection - things to look for (How-to)
How to remove front differential from the top
How to remove front differential from the bottom (easier)
PDF for Differential Set Up, Installation & Break-In
How to remove front axles
Rebuilding the Front Diff - Tips and Tricks
If you see a thread that should be considered to be added here, click on the <Report> button with a note indicating that it should be added.
General
Drivetrain fluids specifications
Gearing RPO codes
Transmission
4L60E list of failures and causes
4L60E Trouble Codes Diagnostic Parameters Chart
4L60E Technical Reference Document PDF
Video: Common 4L60E failures
Identifying Deep or Shallow pan and this one with a picture
Removing Trans for main seal leak.
Flex plate cracked: do I need to pull transmission?
Key points for 4l60E removal/installation on 4.2L GMT360
Slight hesitation or bucking in 4th gear (PWM shudder)
Transmission Coolers..
Best Brand transmission fluid?
Transmission Fluid Exchange (Flush)
4L60E valve body upgrade kit, AKA P1870 "code buster"
Code Buster shift kit installation (OffRoadTB.com)
Transmission fix for throwing code when using overdrive (P0894/P1870)
REPLACING RUSTY TRANSMISSION LINES with Russell Hose and Hose ends
Transmission with multiple codes
Another Transmission with Multiple codes
More Multiple Codes
The 5 Transmission p codes
Replacing transmission lines
Transmission cooler lines R&R
Transmission line change project notes
TCC PWM solenoid modification to eliminate PWM
4x4 and AWD System
GM Transfer Case Parts & Information PDF
4WD not working? Step inside.
Hard to remove front disconnect
Power Stop/Kinetic wheel bearing hubs? (Brand/quality comparisons)
AWD/4x4 front diff permanent disable
Disconnect rebuild (OffRoadTB.com)
How to change Transfer Case Encoder Motor
Stripped Intermediate Shaft
Converting from AWD to 4x4 Transfer Case (9-7x, Bravada, Rainier)
How to remove front axles
Transfer Case Bench Testing NP226
Differentials
Determining your gear ratio
Rear axle shafts 06+
Front diff question (Stripped intermediate shaft)
Front diff fill plug
Rear Diff Fill Plug(Removing stripped plug)
Questions on removing stripped rear diff. fill plug with air ...
Rear Differential Cover Bolt Size
How to identify gearing and differential size
Rear diff fluid swap / inspection - things to look for (How-to)
How to remove front differential from the top
How to remove front differential from the bottom (easier)
PDF for Differential Set Up, Installation & Break-In
How to remove front axles
Rebuilding the Front Diff - Tips and Tricks
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