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Frame and Underbody: Specifications Buick LaCrosse II facelift

Frames, Subframes & Crossmembers 8 illustrations

Fastener Tightening Specifications

ApplicationSpecification
MetricEnglish
Frame-to-Body Fasteners160118 lb ft
Frame-to-Body Reinforcement Fasteners
First Pass6044 lb ft
Final Pass+ 30 degrees
Front Stabilizer Shaft Clamp Fasteners
First Pass2216 lb ft
Second Pass+ 30 degrees
Final Pass+ 15 degrees
Front Transmission Mount Through Bolt10074 lb ft
Rear Stabilizer Shaft Clamp Fasteners
First Pass2216 lb ft
Second Pass+ 30 degrees
Final Pass+ 15 degrees
Rear Support Reinforcement Arm Bolts
First Pass150111 lb ft
Second Pass+ 30 degrees
Final Pass+ 15 degrees
Rear Support-to-Body Fasteners
First Pass9066 lb ft
Second Pass+ 120 degrees
Final Pass+ 15 degrees
Rear Transmission Mount Through Bolt10074 lb ft
Steering Gear Fasteners
First Pass11081 lb ft
Second Pass+ 150 degrees
Final Pass+ 15 degrees

Fastener Tightening Specifications

Scheme 1

Scheme 1: Engine Lower Front Splash Shield Replacement
Scheme 1: Engine Lower Front Splash Shield Replacement
CalloutComponent Name
Preliminary Procedures Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
1Engine Lower Front Splash Shield Fasteners (Qty: 3) CAUTION: Refer to Fastener Caution . Tighten 9 (80 lb in)
2Engine Lower Front Splash Shield
CAUTION
Refer to Fastener Caution .

Engine Lower Front Splash Shield Replacement

Scheme 2

Scheme 2: Front Compartment Splash Shield Replacement
Scheme 2: Front Compartment Splash Shield Replacement
CalloutComponent Name
Preliminary Procedures Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle
1Front Compartment Splash Shield Fastener (Qty 3) CAUTION: Refer to Fastener Caution .
2Front Compartment Splash Shield Retainer (Qty 2)
3Front Compartment Splash Shield
CAUTION
Refer to Fastener Caution .

Front Compartment Splash Shield Replacement

Scheme 3

Scheme 3: Underbody Front Air Deflector Replacement - Left Side
Scheme 3: Underbody Front Air Deflector Replacement - Left Side
CalloutComponent Name
WARNING: Do not use a service jack to lift this vehicle. Lifting the vehicle with a jack could cause the vehicle to slip off the jack and roll; this could cause injury or death. Preliminary Procedures Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Remove rear air deflector replacement left side. Refer to Underbody Rear Air Deflector Replacement - Left Side .
1Underbody Front Air Deflector Fastener (Qty: 6) CAUTION: Refer to Fastener Caution . Tighten 2.5 N.m (22 lb in)
2Underbody Left Front Air Deflector Fastener (Qty: 2)
3Underbody Left Front Air Deflector
WARNING
Do not use a service jack to lift this vehicle. Lifting the vehicle with a jack could cause the vehicle to slip off the jack and roll; this could cause injury or death.
CAUTION
Refer to Fastener Caution .

Underbody Front Air Deflector Replacement - Left Side

Scheme 4

Scheme 4: Underbody Front Air Deflector Replacement - Right Side
Scheme 4: Underbody Front Air Deflector Replacement - Right Side
CalloutComponent Name
WARNING: Do not use a service jack to lift this vehicle. Lifting the vehicle with a jack could cause the vehicle to slip off the jack and roll; this could cause injury or death. Preliminary Procedure Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Remove rear air deflector replacement right side. Refer to Underbody Rear Air Deflector Replacement - Right Side .
1Underbody Front Air Deflector Fastener (Qty: 8) CAUTION: Refer to Fastener Caution . Tighten 2.5 N.m (22 lb in)
2Underbody Right Front Air Deflector
WARNING
Do not use a service jack to lift this vehicle. Lifting the vehicle with a jack could cause the vehicle to slip off the jack and roll; this could cause injury or death.
CAUTION
Refer to Fastener Caution .

Underbody Front Air Deflector Replacement - Right Side

Scheme 5

Scheme 5: Underbody Rear Air Deflector Replacement - Left Side
Scheme 5: Underbody Rear Air Deflector Replacement - Left Side
CalloutComponent Name
WARNING: Do not use a service jack to lift this vehicle. Lifting the vehicle with a jack could cause the vehicle to slip off the jack and roll; this could cause injury or death. Preliminary Procedure Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle
1Underbody Front Air Deflector Fasteners(Qty 7) CAUTION: Refer to Fastener Caution .
2Underbody Left rear Air Deflector
WARNING
Do not use a service jack to lift this vehicle. Lifting the vehicle with a jack could cause the vehicle to slip off the jack and roll; this could cause injury or death.
CAUTION
Refer to Fastener Caution .

Underbody Rear Air Deflector Replacement - Left Side

Scheme 6

Scheme 6: Underbody Rear Air Deflector Replacement - Right Side
Scheme 6: Underbody Rear Air Deflector Replacement - Right Side
CalloutComponent Name
WARNING: Do not use a service jack to lift this vehicle. Lifting the vehicle with a jack could cause the vehicle to slip off the jack and roll; this could cause injury or death. Preliminary Procedure Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
1Underbody Front Air Deflector Fastener (Qty: 12) CAUTION: Refer to Fastener Caution .
2Underbody Right Rear Air Deflector
WARNING
Do not use a service jack to lift this vehicle. Lifting the vehicle with a jack could cause the vehicle to slip off the jack and roll; this could cause injury or death.
CAUTION
Refer to Fastener Caution .

Underbody Rear Air Deflector Replacement - Right Side

Scheme 7

Scheme 7: Underbody Rear Air Outer Deflector Bracket Replacement - Right Side
Scheme 7: Underbody Rear Air Outer Deflector Bracket Replacement - Right Side
CalloutComponent Name
WARNING: Do not use a service jack to lift this vehicle. Lifting the vehicle with a jack could cause the vehicle to slip off the jack and roll; this could cause injury or death. Preliminary Procedure Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Remove underbody rear air deflector right side. Refer to Underbody Rear Air Deflector Replacement - Right Side .
1Underbody Rear Air Outer Deflector Bracket Right Side Fastener (Qty: 1) CAUTION: Refer to Fastener Caution . Tighten: 9 (80 lb in)
2Underbody Rear Air Outer Deflector Bracket Right Side
WARNING
Do not use a service jack to lift this vehicle. Lifting the vehicle with a jack could cause the vehicle to slip off the jack and roll; this could cause injury or death.
CAUTION
Refer to Fastener Caution .

Underbody Rear Air Outer Deflector Bracket Replacement - Right Side

Scheme 8

Scheme 8: Underbody Rear Air Outer Deflector Bracket Replacement - Left Side
Scheme 8: Underbody Rear Air Outer Deflector Bracket Replacement - Left Side
CalloutComponent Name
WARNING: Do not use a service jack to lift this vehicle. Lifting the vehicle with a jack could cause the vehicle to slip off the jack and roll; this could cause injury or death. Preliminary Procedure Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Remove underbody rear air deflector left side. Refer to Underbody Rear Air Deflector Replacement - Left Side .
1Underbody Rear Air Outer Deflector Bracket Left Side Fastener (Qty: 1) CAUTION: Refer to Fastener Caution . Tighten: 9 (80 lb in)
2Underbody Rear Air Outer Deflector Bracket Left Side
WARNING
Do not use a service jack to lift this vehicle. Lifting the vehicle with a jack could cause the vehicle to slip off the jack and roll; this could cause injury or death.
CAUTION
Refer to Fastener Caution .

Underbody Rear Air Outer Deflector Bracket Replacement - Left Side

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