Buick Encore 2013-2019 Electrical System Bolt Torque Specifications & Ground Points
Buick Encore 2013-2019

Buick Encore 2013-2019 Electrical System Bolt Torque Specifications

Detailed torque specifications for electrical bolts on the 2013-2019 Buick Encore, including component location, bolt size, and 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

Ignition System

Torque specifications for components related to the ignition system, ensuring proper electrical connections and secure mounting for reliable spark generation.

1

Ignition Coil Mounting Bolt

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Ensures proper grounding and secure coil attachment. Over-tightening can damage the coil pack. Double-check torque after initial use.

Starting System

Torque specifications for components of the starting system, including the starter motor, which requires secure mounting for proper flywheel engagement and reliable starting.

1

Starter Motor Mounting Bolt

M10 x 1.5
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Ensures proper starter alignment and engagement with the flywheel. Also provides a vital ground path for the starter motor. Under-tightening can cause misalignment and failure. Clean mating surfaces before installation.

Charging System

Torque specifications for the alternator, which ensures proper mounting and drive belt tension, as well as secure electrical connections for proper charging system operation.

1

Alternator Mounting Bolt

M10 x 1.5
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Proper torque ensures secure mounting, correct drive belt tension, and good electrical ground contact. A loose alternator can fail prematurely. Clean mating surfaces before installation.

Battery System

Torque specifications for battery terminals and related connections, ensuring good electrical contact for reliable starting and overall system performance.

1

Battery Terminal Nut

M8 x 1.25
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Ensures good electrical connection without damaging the battery terminals. Over-tightening can crack the terminals; under-tightening can cause poor connections.

Grounding System

Torque specifications for grounding straps and cables, essential for a low-resistance path for the electrical system. This ensures proper operation and prevents issues such as parasitic drains or random electrical problems.

1

Engine to Chassis Ground Strap Bolt

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Critical for proper electrical system operation. Insufficient torque can lead to high resistance and electrical issues such as dim headlights, erratic gauges and parasitic drain. Clean all connection points before installation. This is an estimated torque value.

Electronic Control Modules

Torque specifications for mounting bolts of critical electronic modules, such as the ECM/PCM, BCM, and fuse box, to ensure proper grounding, prevent vibration damage, and maintain reliable operation.

1

Engine Control Module (ECM/PCM) Mounting Bolt

M6 x 1.0
Torque Value
5.9 ft-lbs (8 N·m)
Important Notes
Ensures good ground and prevents vibration damage. Over-tightening may damage module housing. This is an estimated torque value.
2

Body Control Module (BCM) Mounting Bolt

M6 x 1.0
Torque Value
5.9 ft-lbs (8 N·m)
Important Notes
Ensures proper ground and prevents damage to the module. Over-tightening can crack the housing. This is an estimated torque value.
3

Fuse Box/Power Distribution Box Mounting Bolt

M6 x 1.0
Torque Value
5.9 ft-lbs (8 N·m)
Important Notes
Ensures secure mounting and good ground for the fuse box. Proper torque helps prevent intermittent electrical issues. This is an estimated torque value.

Lighting System

Torque specifications for mounting bolts of headlights and taillights. Proper torque ensures the housings are securely attached to the body and that all connectors are firmly seated and protected.

1

Headlight/Taillight Mounting Bolt

M5 x 0.8
Torque Value
3.7 ft-lbs (5 N·m)
Important Notes
Ensures secure mounting without damaging plastic housings. Over-tightening may crack housings or cause a seal failure. Under-tightening can result in vibration and connector failure. This is an estimated torque value.

Wiring Harness Connectors

Torque specifications for mounting bolts found on some larger and sensitive electrical connectors. Proper torque ensures secure and reliable electrical connections. These bolts are critical for the harness to be securely connected to the module/component.

1

Wiring Harness Connector Bolt

M4 x 0.7
Torque Value
1.5 ft-lbs (2 N·m)
Important Notes
These are general estimates - Consult specific manufacturers documentation for more accurate specifications. Critical for ensuring that all pins within a connector are properly connected and that the connector remains firmly attached, especially in engine bay environments where connectors are exposed to vibrations and heat. Over-tightening can damage the connector; under-tightening can cause intermittent connections and difficult-to-diagnose issues. This is an estimated torque 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 electrical connections?

Correct torque ensures proper electrical contact, reducing resistance and preventing overheating. Under-tightening can cause loose connections and arcing, leading to component failure or fire. Over-tightening can damage terminals and threads, again compromising the connection. For example, a battery terminal that isn't torqued correctly could cause a no-start condition due to insufficient power delivery.

Q2

Where can I find the correct torque specifications for my 2013-2019 Buick Encore's electrical components?

Refer to the vehicle's service manual or a reputable repair database (like Alldata or Mitchell1). These sources provide detailed torque specs for various components. While some generic specs might be available online, using manufacturer-specific values ensures accuracy. Be cautious when using forums, as information may be unverified.

Q3

What happens if I don't have a torque wrench?

While a torque wrench is the most accurate method, you can use a wrench and the "feel" method in a pinch, ensuring bolts are snug, but this is not recommended for critical electrical components. For instance, an alternator connection should be torqued to specification, as a poor connection can lead to undercharging of the battery.

Q4

Do torque specifications change over time?

Generally, torque specifications are consistent. However, it’s crucial to check for any service bulletins or revisions. Sometimes, updates may exist from the manufacturer to address common issues or improve connections. Always refer to the most current information.

Q5

Should I use anti-seize on electrical connections?

Generally no. Anti-seize compounds can often increase the resistance between the connection and may lead to more problems. Some specific instances do call for it and it will always be in the vehicle specific service manual. If you add anti-seize when it is not recommended it can lead to poor connections and intermittent failures.

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 (1/4-inch Drive)

A 1/4-inch drive torque wrench is essential for accurately tightening smaller electrical fasteners to their specified torque values.

  • Accurate torque measurement
  • Click-type mechanism
  • Range: typically 20-200 inch-pounds
Learn more

Torque Wrench (3/8-inch Drive)

A 3/8-inch drive torque wrench is often needed for larger electrical connections and ground points, offering more range and force than a 1/4 inch drive.

  • Accurate torque measurement
  • Click-type mechanism
  • Range: typically 5-80 foot-pounds
Learn more

Socket Set (Metric)

A comprehensive metric socket set, including shallow and deep sockets, is required to fit various electrical fasteners on the Buick Encore.

  • Variety of sizes (8mm - 19mm)
  • 6-point sockets
  • Durable construction
Learn more

Extension Bars

Extension bars of different lengths will help access fasteners in tight spaces when working on the electrical system.

  • Various lengths (3 inch, 6 inch, 10 inch)
  • Secure connection
  • Durable construction
Learn more

Ratchet (1/4-inch and 3/8-inch Drive)

Ratchets are used to turn the sockets and fasteners efficiently, providing a secure grip on the sockets.

  • Quick-release mechanism
  • Comfortable handle
  • Durable construction
Learn more
Service Procedures

Battery Terminal Connection Torque

Properly tightening the battery terminals ensures good contact and prevents electrical issues. Over-tightening can damage the terminal or battery.

  • Clean battery terminals and connectors with a wire brush.
  • Attach the battery connector to the battery terminal.
  • Torque the nut to 13 Nm (115 in-lbs) using a torque wrench and socket.
  • Verify tightness after the vehicle has been driven.
View full procedure

Ground Connection Torque

Secure ground connections are vital for proper electrical operation. These bolts often need specific torque to avoid loose connections or damage.

  • Locate the ground connection point.
  • Ensure the contact area is clean and free of corrosion.
  • Attach the ground wire to the body or frame.
  • Torque the bolt to 20 Nm (15 ft-lbs) using a torque wrench and socket.
  • Verify that the connection is secure and that there is good metal-to-metal contact.
View full procedure

Engine Control Module (ECM) Connector Torque

Ensuring that the ECM connectors are securely fastened is important to prevent electrical communication issues. These are often small fasteners that require careful attention to torque specs.

  • Locate the ECM and its connector(s).
  • Attach the connector to the ECM.
  • Torque the connector bolt or screw to 5 Nm (44 in-lbs) using a torque wrench and proper socket.
  • Double check the connections for secure fitment.
View full procedure

Fuse Box Connection Torque

The fuse box contains numerous connectors and securing screws that must be tightened to specifications.

  • Locate the fuse box and any grounding or securing screws.
  • Check the threads to ensure they are clean and not cross threaded.
  • Torque screws or bolts to 8 Nm (70 in-lbs) using a torque wrench.
  • Check for any looseness before moving forward.
View full procedure
Technical Service Bulletins

Loss of Power Steering Assist Due to Loose Ground Connection

2017-05-15

Some 2013-2017 Buick Encores may exhibit intermittent loss of power steering assist. This can be due to a loose ground connection on the body or frame. Applying correct torque will prevent this issue.

2013-2017

Resolution: Inspect ground connections in the power steering circuit and verify the ground bolt is torqued to 20 Nm (15 ft-lbs).

Intermittent Stalling due to ECM Connector Issues

2018-12-20

Some 2015-2019 Buick Encore models may experience intermittent stalling, often caused by a loose or poorly connected Engine Control Module (ECM). Applying the correct torque will help secure the connection.

2015-2019

Resolution: Inspect and torque all ECM connectors to 5 Nm (44 in-lbs). Clean any debris from terminals and connectors.

Battery Terminal Corrosion and Loose Connections

2016-08-10

Certain 2013-2016 Buick Encore vehicles may suffer from battery terminal corrosion leading to loose connections, difficulty starting and intermittent electrical issues. Proper torque and cleaning are vital.

2013-2016

Resolution: Clean battery terminals, apply anti-corrosion compound, and torque battery connections to 13 Nm (115 in-lbs).

About the Author

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Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

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