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Fastener Specifications

WARNING: This page is about a different car, the 2023 GMC Sierra 3500 HD and 2023 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
GM5644539Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
1-2-3-4 and 3-5-Reverse Clutch Assembly

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
400 3-5-Reverse Clutch Backing Plate Retaining Ring - - - 1-2-3-4 and 3-5 Reverse Clutch Overhaul
429 1-2-3-4 Clutch Backing Plate Retaining Ring - - - 1-2-3-4 and 3-5 Reverse Clutch Overhaul
411 1-2-3-4 Clutch Piston Dam Retaining Ring Yes - - 1-2-3-4 and 3-5 Reverse Clutch Overhaul
415 1-2-3-4 Clutch Piston Housing Return Ring-Retaining Ring Yes - - 1-2-3-4 and 3-5 Reverse Clutch Overhaul
416 1-2-3-4 Clutch Piston Seal Yes - - 1-2-3-4 and 3-5 Reverse Clutch Overhaul
418 3-5-Reverse Clutch Piston Dam Seal Yes - - 1-2-3-4 and 3-5 Reverse Clutch Overhaul
419 3-5-Reverse Clutch Piston Inner Seal Yes - - 1-2-3-4 and 3-5 Reverse Clutch Overhaul
422 3-5-Reverse Clutch Piston Outer Seal Yes - - 1-2-3-4 and 3-5 Reverse Clutch Overhaul
423 1-2-3-4 Clutch Piston Inner Seal Yes - - 1-2-3-4 and 3-5 Reverse Clutch Overhaul
424 1-2-3-4 Clutch Piston Housing Seal-Small Yes - - 1-2-3-4 and 3-5 Reverse Clutch Overhaul
425 1-2-3-4 Clutch Piston Housing Seal-Large Yes - - 1-2-3-4 and 3-5 Reverse Clutch Overhaul
428 1-2-3-4 and 3-5-Reverse Clutch Bearing Yes - - 1-2-3-4 and 3-5 Reverse Clutch Overhaul
GM5644903Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
2-6 Clutch Assembly

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
450 2-6 Clutch Backing Plate Retaining Ring - - - 2-6 Clutch Overhaul
455 2-6 Clutch Spring Retaining Ring - - - 2-6 Clutch Overhaul
GM5644540Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
4-5-6 Clutch Assembly

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
431 4-5-6 Clutch Backing Plate Retaining Ring - - - 4-5-6 Clutch Overhaul
436 4-5-6 Clutch Piston Dam Retaining Ring Yes - - 4-5-6 Clutch Overhaul
442 Turbine Shaft Fluid Seal Ring [3x] Yes - - 4-5-6 Clutch Overhaul
443 Turbine Shaft Seal Yes - - Torque Converter Housing with Fluid Pump Installation
GM5644902Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
4-5-6 Clutch Hub Assembly

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
478 4-5-6 Clutch Dampener Retaining Ring - - - 4-5-6 Clutch Dampener Overhaul
GM5219568Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Automatic Transmission Case Extension

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Transfer Case Adapter Bolt [6x] - - Transfer Case Adapter Bolt Sequence  Automatic Transmission Case Extension Replacement (NQF) , or Automatic Transmission Case Extension Replacement (NQH)
GM5219580Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Automatic Transmission Case Extension

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Transfer Case Adapter Bolt [4x] - - 50 N.m (37 lb ft) Automatic Transmission Case Extension Replacement (NQF) , or Automatic Transmission Case Extension Replacement (NQH)
GM5670942Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Automatic Transmission Range Selector Lever Cable

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Automatic Transmission Range Selector Lever Cable Bracket Bolt - - 9 N.m (80 lb in) Automatic Transmission Range Selector Lever Cable Replacement
2 Automatic Transmission Range Selector Lever Cable Bolt - Yes 9 N.m (80 lb in) Automatic Transmission Range Selector Lever Cable Replacement
GM5671015Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Automatic Transmission Range Selector Lever Cable

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Automatic Transmission Range Selector Lever Cable Bolt - - 9 N.m (80 lb in) Automatic Transmission Range Selector Lever Cable Replacement
2 Automatic Transmission Range Selector Lever Cable - Yes 9 N.m (80 lb in) Automatic Transmission Range Selector Lever Cable Replacement
GM5693826Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Automatic Transmission Range Selector Lever Cable Bracket Bolt

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Automatic Transmission Range Selector Lever Cable Bracket Bolt [2x] - - 22 N.m (16 lb ft) Automatic Transmission Range Selector Lever Cable Bracket Replacement
GM5733477Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Automatic Transmission Range Selector Lever Cable Lever Nut

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Automatic Transmission Range Selector Lever Cable Lever Nut - - 30 N.m (22 lb ft) Automatic Transmission Range Selector Lever Cable Lever Replacement
GM5922004Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Body and Engine Wiring Harness Conduit Bolt

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Body and Engine Wiring Harness Conduit Bolt - - 9 N.m (80 lb ft) Transmission Replacement (4WD, L8T, NQH) , or Transmission Replacement (4WD, L8T, NQF) , or Transmission Replacement (2WD, L8T)
GM5644537Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Case and Associated Parts 1 of 2

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
3 Torque Converter Housing Bolt M10 x 50 [9x] - - Torque Converter Housing Bolt Sequence  Torque Converter Housing with Fluid Pump Installation
5 Automatic Transmission Fluid Pump Seal Yes - - Torque Converter Housing with Fluid Pump Installation
14 Output Shaft Seal-Model Dependent Yes - - Output Shaft Seal Replacement (2WD) , or Output Shaft Seal Replacement (4WD with NQF) , or Output Shaft Seal Replacement (4WD with NQH)
16 Automatic Transmission Case Extension Bolt-Model DependentM10 x 40 [6x] - - Automatic Transmission Case Extension Bolt Sequence  Case Extension Assembly Installation
25 Automatic Transmission Fluid Filter Seal Yes - - Fluid Filter and Manual Shift Detent Assembly Installation
26 Automatic Transmission Fluid Filter Yes - - Fluid Filter and Manual Shift Detent Assembly Installation
30 Automatic Transmission Fluid Pan Bolt M6 x 20 [18x] - - Automatic Transmission Fluid Pan Bolt Sequence  Automatic Transmission Fluid Pan Installation
33 Automatic Transmission Case Extension Seal-Model Dependent Yes - - Case Extension Assembly Installation
36 Propeller Shaft Front Slip Yoke Oil Seal-Model Dependent Yes - - Propeller Shaft Front Slip Yoke Oil Seal Replacement
72 Propeller Shaft Oil Seal Sleeve-Model Dependent Yes - - Propeller Shaft Oil Seal Sleeve Installation
GM5644538Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Case and Associated Parts 2 of 2

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
9 Automatic Transmission Electrical Connector Passage Sleeve Seal Yes - - Automatic Transmission Electrical Connector Passage Sleeve Installation
10 Automatic Transmission Wiring Connector Seal [2x] Yes - - Automatic Transmission Electrical Connector Passage Sleeve Installation
18 Automatic Transmission Fluid Pump Seal-Small Yes - - Control Valve Body Assembly Installation
19 Automatic Transmission Fluid Pump Seal-Large Yes - - Control Valve Body Assembly Installation
20 Center Support Fluid Passage Seal Yes - - Control Valve Body Assembly Installation
22 Valve Body Bolt M5 x 73 [6x] - - Automatic Transmission Fluid Pan Bolt Sequence  Control Valve Body Assembly Installation
23 Manual Shift Detent Bolt M6 x 14.5 - - 12 N.m (106 lb in) Fluid Filter and Manual Shift Detent Assembly Installation
GM5644642Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Control Valve Assembly 1 of 2

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
301 Control Valve Upper Body Bolt M5 x 36 [12x] - - Control Valve Upper Body to Control Valve Body Bolt Sequence  Control Valve Body Assembly Assemble
302 Automatic Transmission Input and Output Speed Sensor Bolt M6 x 20 [2x] - - 12 N.m (106 lb in) Control Valve Body Assembly Assemble
305 Control Valve Body Spacer Plate Yes - - Control Valve Body Assembly Assemble
GM5644641Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Control Valve Assembly 2 of 2

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
309 Control Valve Lower Body Bolt M5 x 45 [10x] - - Control Valve Body to Control Valve Upper Body Bolt Sequence  Control Valve Body Assembly Assemble
310 Control Valve Lower Body Bolt M5 x 73 [6x] - - Control Valve Body to Control Valve Upper Body Bolt Sequence  Control Valve Body Assembly Assemble
311 Control Solenoid Valve Filter Plate Yes - - Control Valve Body Assembly Assemble
312 Control Solenoid Valve Heat Sink Bolt M5 x 53 [2x] - - Control Valve Body to Control Valve Upper Body Bolt Sequence  Control Valve Body Assembly Assemble
GM5644638Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Low and Reverse Clutch Assembly

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
461 Low and Reverse Clutch Backing Plate Retaining Ring - - - Low and Reverse Clutch Overhaul
466 Low and Reverse Clutch Spring Retaining Ring - - - Low and Reverse Clutch Overhaul
468 Low Clutch Sprag Seal Yes - - Low and Reverse Clutch Overhaul
GM5644550Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Output Carrier Assembly

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
485 Center Support Roller Bearing Yes - - Output Carrier Assembly Overhaul
GM5644548Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Park System Components

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
504 Manual Shift Detent Lever Hub Pin Yes - - Manual Shift Shaft and Parking System Components Overhaul
506 Manual Shift Shaft Pin Yes - - Manual Shift Shaft and Parking System Components Overhaul
507 Manual Shift Shaft Seal Yes - - Manual Shift Shaft and Parking System Components Overhaul
510 Park Pawl Actuator Guide Seal [2x] Yes - - Manual Shift Shaft and Parking System Components Overhaul
511 Park Pawl Actuator Guide Pin Yes - - Manual Shift Shaft and Parking System Components Overhaul
GM5020564Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Torque Converter Bolt

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Torque Converter Bolt [6x] - Yes 63 N.m (46 lb ft) Transmission Replacement (4WD, L8T, NQH) , or Transmission Replacement (4WD, L8T, NQF) , or Transmission Replacement (2WD, L8T)
GM5644546Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Torque Converter Housing and Automatic Transmission Fluid Pump Assembly

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
200 Torque Converter Fluid Seal Retaining Ring - - - Torque Converter Fluid Seal Replacement
201 Torque Converter Fluid Seal Yes - - Torque Converter Fluid Seal Replacement
202 Line Pressure Test Hole Plug1/8 - 27 NPTF - - 11 N.m (97 lb in) Torque Converter Housing Cleaning and Inspection
205 Transmission Fluid Cooler Pipe Fitting Seal [2x] Yes - - Transmission Fluid Cooler Pipe Seal Replacement
209 Automatic Transmission Fluid Pump Slide Fluid Seal Ring Yes - - Torque Converter Housing with Fluid Pump Assemble
210 Automatic Transmission Fluid Pump Slide Seal-O-ring Yes - - Torque Converter Housing with Fluid Pump Assemble
213 Automatic Transmission Fluid Pump Slide Seal Yes - - Torque Converter Housing with Fluid Pump Assemble
214 Automatic Transmission Fluid Pump Slide Seal Support Yes - - Torque Converter Housing with Fluid Pump Assemble
229 1-2-3-4 and 3-5 Reverse Clutch Housing Thrust Washer Yes - - Fluid Pump Cover Installation
230 1-2-3-4 and 3-5-Reverse Clutch Fluid Seal Ring- Outer [3x] Yes - - 1-2-3-4 and 3-5 Reverse Clutch Fluid Seal Ring Installation
231 Automatic Transmission Fluid Pump Cover Bolt M6 x 40 [13x] - - Automatic Transmission Fluid Pump Cover Bolt Sequence  Fluid Pump Cover Installation
238 1-2-3-4 and 3-5-Reverse Clutch Fluid Seal Ring- Inner [3x] Yes - - 1-2-3-4 and 3-5 Reverse Clutch Fluid Seal Ring Installation
GM5672411Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Transmission Converter Cover Bolt

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Transmission Converter Cover Bolt [2x] - - 9 N.m (80 lb in) Transmission Converter Cover Replacement - Right Side
Transmission Converter Cover Replacement - Left Side
GM5672413Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Transmission Bolts

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Transmission Bolt [2x] - - 58 N.m (43 lb ft) Transmission Replacement (4WD, L8T, NQH) , or Transmission Replacement (4WD, L8T, NQF) , or Transmission Replacement (2WD, L8T)
GM5376046Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Transmission Heat Shield

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Transmission Heat Shield Nut - - 25 N.m (18lb ft) Transmission Heat Shield Replacement
2 Transmission Heat Shield Bolt - - 17 N.m (13 lb ft) Transmission Heat Shield Replacement
GM5902984Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Transmission Mount (2WD MYD)

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Transmission Mount Bolt [2x] Yes Yes First Pass:45 N.m (33 lb ft)
Final Pass:45 - 55 degrees		 Transmission Mount Replacement (L8T with 2WD)
2 Transmission Mount Nut - - First Pass:45 N.m (33 lb ft)
Final Pass:45 - 55 degrees		 Transmission Mount Replacement (L8T with 2WD)
3 Transmission Mount Yes - - Transmission Mount Replacement (L8T with 2WD)
GM5902985Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Transmission Mount (4WD MYD)

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Transmission Mount Nut [2x] - - First Pass:45 N.m (33 lb ft)
Final Pass:45 - 55 degrees		 Transmission Mount Replacement (L8T with 4WD)
2 Transmission Mount Bolt [2x] Yes Yes First Pass:45 N.m (33 lb ft)
Final Pass:45 - 55 degrees		 Transmission Mount Replacement (L8T with 4WD)
3 Transmission Mount Yes - - Transmission Mount Replacement (L8T with 4WD)
GM5672170Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Transmission Studs

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Transmission Stud [6x] - - 58 N.m (43 lb ft) Transmission Replacement (4WD, L8T, NQH) , or Transmission Replacement (4WD, L8T, NQF) , or Transmission Replacement (2WD, L8T)
GM5608551Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Transmission Vent Hose Clip Bracket Nut

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Transmission Vent Hose Clip Bracket Nut - - 22 N.m (16 lb ft) Transmission Replacement (4WD, L8T, NQH) , or Transmission Replacement (4WD, L8T, NQF) , or Transmission Replacement (2WD, L8T)
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