Chrysler Voyager 2020-present 948TE Transmission Transmission Torque Specifications & Bolt Torque Values
Chrysler Voyager 2020-present

Chrysler Voyager 2020-present 948TE Transmission Torque Specifications

Detailed torque specifications for bolts used in the 948TE automatic transmission found in the 2020-Present Chrysler Voyager. Includes fastener locations and recommended torque values.

Updated

Important Information

Safety guidelines and reference information for proper torque application

Quick Reference Guide
ft-lbs → Nm
× 1.356
ft-lbs → kg-m
× 0.138
Nm → ft-lbs
× 0.738
in-lbs → ft-lbs
× 0.083

Common Torque Patterns

Star Pattern

Used for wheels and other circular bolt patterns

Star Pattern torque pattern diagram showing proper bolt tightening sequence
Cross Pattern

Used for gaskets and cover plates

Cross Pattern torque pattern diagram showing proper bolt tightening sequence
Sequential Pattern

Used for head bolts and other critical components

Sequential Pattern torque pattern diagram showing proper bolt tightening sequence

Common Mistakes to Avoid

Over-tightening

Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.

Prevention:

Always use a calibrated torque wrench and follow specifications exactly.

Incorrect Torque Sequence

Tightening bolts in the wrong order can cause uneven pressure distribution and potential leaks or damage.

Prevention:

Follow the manufacturer's specified torque sequence pattern.

Dirty Threads

Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.

Prevention:

Clean and inspect all threads before assembly. Use new thread locker if specified.

Reusing TTY Bolts

Torque-to-yield bolts are designed to stretch and must not be reused.

Prevention:

Always replace TTY bolts with new ones. They are single-use only.

Dry vs. Lubricated

Not accounting for whether torque specs are for dry or lubricated fasteners can lead to incorrect tension.

Prevention:

Check if specs are for dry or lubricated threads. Use specified lubricant when required.

Recommended Tools

Torque Wrench (1/4" Drive)

Range: 2-25 ft-lbs
Small fasteners, delicate components

Torque Wrench (3/8" Drive)

Range: 10-100 ft-lbs
Most common automotive fasteners

Torque Wrench (1/2" Drive)

Range: 30-250 ft-lbs
Large fasteners, wheels

Angle Gauge

Torque-to-yield (TTY) bolts

Torque Wrench Care

  • Calibrate annually or after 5,000 clicks
  • Store at lowest setting
  • Keep clean and lubricated

Search Specifications

Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

Transmission Housing

Components related to securing the transmission to the vehicle and its major housing parts.

1

Transmission Mounting Bolts

M12 x 1.75
Torque Value
40 ft-lbs (54 N·m)
Important Notes
These bolts secure the transmission housing to the engine block and/or chassis. Proper torque is crucial for alignment and preventing vibration.
2

Transmission Bellhousing Bolts

M12 x 1.75
Torque Value
40 ft-lbs (54 N·m)
Important Notes
These bolts secure the transmission bellhousing to the engine block. Proper torque is crucial for alignment and preventing vibration.

Transmission Pan

Bolts for securing the transmission oil pan to the transmission case.

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Value
13 ft-lbs (17 N·m)
Important Notes
Correct torque is essential to prevent leaks. A specific tightening sequence is typically required; consult the service manual.

Fluid Plugs

Specifications for the transmission fluid drain and fill plugs.

1

Transmission Drain and Fill Plugs

M18 x 1.5
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Correct torque is essential to ensure a fluid-tight seal and prevent leaks. Over-tightening can damage threads or the sealing washer.
2

Transmission Fluid Drain/Fill Plug

M18 x 1.5
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Correct torque is essential to ensure a fluid-tight seal and prevent leaks. Over-tightening can damage threads or the sealing washer.

Valve Body

Specifications for the bolts securing the transmission valve body.

1

Transmission Valve Body Bolts

M6 x 1.0
Torque Value
8.3 ft-lbs (11.3 N·m)
Important Notes
Proper torque is essential for ensuring correct sealing of the valve body and preventing internal fluid leaks. May be higher for early models; consult service manual.

Tcm

Specifications for the bolts securing the Transmission Control Module.

1

Transmission Control Module (TCM) Mounting Bolts

M6 x 1.0
Torque Value
5.8 ft-lbs (8 N·m)
Important Notes
Proper torque ensures secure mounting and good electrical contact, and prevents damage to the TCM.

Speed Sensors

Specifications for the bolts securing the input and output speed sensors.

1

Transmission Input Speed Sensor Bolt

M6 x 1.0
Torque Value
5.8 ft-lbs (8 N·m)
Important Notes
Correct torque ensures proper sensor seating and accurate readings.
2

Transmission Output Speed Sensor Bolt

M6 x 1.0
Torque Value
5.8 ft-lbs (8 N·m)
Important Notes
Correct torque ensures proper sensor seating and accurate readings.

Solenoid Pack

Specifications for the bolts securing the solenoid pack.

1

Transmission Solenoid Pack Bolts

M6 x 1.0
Torque Value
6.6 ft-lbs (9 N·m)
Important Notes
Proper torque is critical to prevent leaks and ensure correct operation of the solenoids.

Cooler Lines

Specifications for the fittings connecting the cooler lines to the transmission.

1

Transmission Cooler Line Fittings (transmission side)

Varies depending on fitting type
Torque Value
25 ft-lbs (34 N·m)
Important Notes
This torque spec can vary depending on the type of fitting. Ensure proper O-ring or seal is used. This is an estimated value.

Troubleshooting Guide

Common issues, diagnostic steps, and prevention guidelines

Common Issues

Bolt stretching, stripped threads, uneven torque patterns

Loose Components

Symptoms:
  • Rattling or vibration noises
  • Visible movement in components
  • Uneven panel gaps
Solutions:
  • Clean threads and mounting surfaces
  • Replace damaged fasteners
  • Apply proper torque in sequence
  • Use thread locker if specified

Stripped Fasteners

Symptoms:
  • Unable to achieve proper torque
  • Fastener spins freely
  • Visible thread damage
Solutions:
  • Use thread repair kit if appropriate
  • Install thread insert (HeliCoil)
  • Replace component if threaded hole is damaged
  • Upgrade to higher grade fastener if recommended

Overtightened Components

Symptoms:
  • Cracked or deformed parts
  • Broken fasteners
  • Compressed gaskets or seals
Solutions:
  • Replace damaged components
  • Use new fasteners
  • Follow proper torque sequence
  • Verify correct torque specifications

Diagnostic Steps

Visual inspection, torque verification, thread assessment

1

Visual Inspection

Inspect the affected area for any visible signs of damage or wear

  • Check for cracks or deformation
  • Look for signs of excessive wear
  • Verify proper fastener installation
2

Torque Verification

Verify the torque applied to the fasteners

  • Check the torque wrench calibration
  • Verify the torque specification
  • Compare the applied torque to the specification
3

Thread Assessment

Assess the condition of the threads

  • Check for signs of thread damage
  • Verify the thread type and size
  • Check for proper thread engagement

Prevention Guidelines

Best practices, maintenance tips, tool care

Best Practices

  • Always follow the recommended torque specification
  • Use the correct type and size of fasteners
  • Verify the torque wrench calibration regularly

Maintenance Tips

  • Regularly inspect the affected area for signs of wear or damage
  • Replace damaged or worn-out components promptly
  • Keep the work area clean and organized

Tool Care

  • Regularly clean and maintain the torque wrench
  • Store the torque wrench in a dry and secure location
  • Verify the torque wrench calibration before each use

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

Why are torque specifications important for the 948TE transmission?

Accurate torque is crucial for proper sealing, preventing leaks, and ensuring the reliable operation of the 948TE transmission. Under-tightening can lead to leaks and component loosening, while over-tightening can damage threads and warp components, potentially leading to transmission failure. For example, the transmission pan bolts need proper torque to create a fluid tight seal, avoiding low fluid levels.

Q2

Can I reuse 948TE transmission bolts?

While some bolts can be reused, it's generally recommended to replace torque-to-yield bolts (TTY) or those specified by Chrysler to be single-use bolts. Reusing TTY bolts can compromise their clamping force, leading to component loosening and eventual failure. Always consult the service manual for the specific bolt type and recommendations before reusing. For instance, some valve body bolts may be recommended to be replaced.

Q3

What type of lubricant should I use on 948TE transmission bolts?

Unless otherwise specified, clean the bolts and threads. Applying thread locker is sometimes specified for select bolts. Using a lubricant where it's not needed can impact the specified torque. When torque is specified to be wet, proper lubricant is extremely important. Refer to the service manual for any specific lubrication instructions for each bolt.

Q4

What happens if I overtighten a 948TE transmission bolt?

Overtightening can damage the bolt, the threads in the transmission case or component, and the gasket or sealing surface. This can lead to stripped threads, warped components, and leaks. For example, overtightening a transmission housing bolt can crack the housing. If you suspect overtightening, the bolt and threads should be inspected for damage and replaced, along with the affected component, if needed.

Q5

Where can I find the exact torque specifications for my 2020-Present Chrysler Voyager 948TE transmission?

Always consult the official Chrysler service manual specific to your vehicle year. Specifications may vary slightly. Online databases like ALLDATA or the official OEM service resource websites are reliable resources. Always prioritize the information from the official service manual.

Environmental Considerations

Temperature, humidity, and seasonal effects on torque specifications

Temperature Effects

Includes: High Heat, Cold Weather, Thermal Cycling

Temperature can significantly impact torque values and fastener behavior

Cold Weather

Effects:
  • Increased material brittleness
  • Higher torque required due to thread contraction
  • Reduced thread lubricant effectiveness
Recommendations:
  • Allow components to warm to room temperature when possible
  • Consider using winter-grade thread lubricants
  • Check torque values more frequently during winter months

Hot Weather

Effects:
  • Thermal expansion of components
  • Decreased friction in threads
  • Accelerated lubricant breakdown
Recommendations:
  • Check torque when components are at normal operating temperature
  • Use temperature-resistant thread lockers
  • Consider re-torquing after heat cycles

Humidity and Corrosion

Covers: Rust Prevention, Salt Exposure, Moisture Control

Moisture and corrosion can affect fastener integrity and torque values

High Humidity

Effects:
  • Accelerated corrosion formation
  • Reduced friction coefficient
  • Potential thread seizing
Prevention:
  • Use corrosion-resistant fasteners
  • Apply appropriate anti-seize compounds
  • Maintain proper protective coatings

Salt Exposure

Effects:
  • Rapid corrosion development
  • Thread damage
  • Seized fasteners
Prevention:
  • Regular underbody washing
  • Use of sacrificial anodes where appropriate
  • Application of protective coatings

Seasonal Maintenance

Spring, Summer, Fall, and Winter maintenance schedules

Spring

  • Inspect for winter damage
  • Clean and protect exposed fasteners
  • Check torque on critical components

Summer

  • Monitor heat-affected components
  • Check expansion-related loosening
  • Inspect cooling system mounts

Fall

  • Prepare for winter conditions
  • Apply corrosion protection
  • Verify all fasteners are properly torqued

Winter

  • More frequent inspection of critical fasteners
  • Check for salt damage
  • Monitor suspension component torque

Related Resources

Tools, service procedures, and technical bulletins

Recommended Tools

Torque Wrench (1/2-inch drive)

A calibrated torque wrench is essential for accurately tightening bolts to specification. 1/2-inch drive is recommended for the torque range of transmission bolts.

  • Wide torque range (suitable for transmission applications)
  • Accurate and repeatable measurements
  • Durable construction
Learn more

Torque Wrench (3/8-inch drive)

A smaller 3/8-inch drive torque wrench may be required for some smaller transmission component bolts.

  • Suitable for lower torque applications
  • More compact for accessing tighter areas
  • Accurate and reliable
Learn more

Socket Set (Metric)

A set of metric sockets is necessary to fit the various bolt heads on the 948TE transmission. Ensure the set includes common sizes.

  • Includes a range of common metric sizes
  • Durable chrome vanadium steel
  • Variety of depths
Learn more

Socket Extensions

Various lengths of socket extensions are needed to reach recessed or difficult-to-access transmission bolts.

  • Multiple lengths for flexibility
  • Secure socket connection
  • Durable steel construction
Learn more

Universal Joint (U-Joint)

A universal joint adapter can assist when working around obstructions.

  • Flexible angle movement
  • Durable construction
  • Various drive sizes
Learn more
Service Procedures

948TE Transmission Bolt Torque Procedure

This procedure outlines the general steps for tightening bolts on a 948TE transmission. Always refer to the specific service manual for bolt locations and torque values.

  • 1. Identify the specific bolt and its location on the transmission housing or components.
  • 2. Consult the vehicle's service manual for the correct torque specification for that bolt.
  • 3. Using the appropriate socket and torque wrench, loosely install the bolt.
  • 4. Set the torque wrench to the specified torque value for the bolt.
  • 5. Tighten the bolt until the torque wrench clicks or signals that the correct torque is reached.
  • 6. Repeat steps 3-5 for all other bolts needing tightening. Follow specified torque patterns where specified.
  • 7. Double-check all bolts after torquing to ensure none were missed.
View full procedure

Transmission Pan Bolt Torque Procedure

Specific procedure for tightening the transmission pan bolts. Proper torquing is critical to prevent leaks.

  • 1. Lightly install all transmission pan bolts by hand.
  • 2. Follow the specified torque pattern. This typically involves starting in the center and working outward in a criss-cross pattern.
  • 3. Tighten all bolts to the first stage torque specification.
  • 4. Tighten all bolts to the final torque specification, following the same pattern.
  • 5. Double check each bolt to verify each reached the final torque value.
View full procedure

Transmission Cooler Line Fitting Torque Procedure

Proper procedure for tightening the transmission cooler line fittings.

  • 1. Use a flare nut wrench when available to prevent rounding the fitting.
  • 2. Hand-tighten the fittings to a point of seal.
  • 3. Use the flare nut wrench to torque the fitting to the specification listed in the service manual.
  • 4. Ensure the fitting is correctly aligned and tightened.
View full procedure
Technical Service Bulletins

Revised Torque Specifications for 948TE Transmission Pan Bolts

2021-05-15

A revision was made to the torque specification of the transmission pan bolts due to instances of leaks occurring after service. This bulletin provides updated specifications.

2020-2021 Chrysler Voyager 2020-2021 Chrysler Pacifica (with 948TE)

Resolution: Use the updated torque specifications for the transmission pan bolts provided in the bulletin. Ensure the torque procedure is properly followed including proper torque sequence.

948TE Transmission Case Bolt Inspection and Torque Check

2022-08-22

This bulletin outlines a procedure for inspecting the transmission case bolts and ensuring proper torque, following reports of loosening.

2020-2022 Chrysler Voyager 2020-2022 Chrysler Pacifica (with 948TE)

Resolution: Inspect all transmission case bolts for correct torque, following the procedure outlined in the technical bulletin. Replace bolts as necessary.

Updated Torque Values for Transmission Mount Bolts - 948TE

2023-03-10

This bulletin addresses the updated torque specifications for securing the transmission mounts to the chassis due to inconsistencies in older documentation.

2020-2023 Chrysler Voyager 2020-2023 Chrysler Pacifica (with 948TE)

Resolution: Ensure to use the updated torque values when installing or reinstalling the transmission mounts to the chassis. This will prevent mount issues.

About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

Automotive Technical Specialist

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