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Frame and Underbody Cadillac CTS I

Frames, Subframes & Crossmembers 5 illustrations ~2566 words

Fastener Tightening Specifications

ApplicationSpecification
MetricEnglish
Brake Line Bracket to Frame Nut10 N.m89 lb in
Brake Module to Bracket Nut10 N.m89 lb in
Brake Pipe Fittings15 N.m11 lb ft
Energy Absorber Nut25 N.m18 lb ft
Engine Mount Nuts to Frame50 N.m37 lb ft
Front Frame Insulator Anchor Bolts to Body191 N.m141 lb ft
Front Lower Ball Joint Nut
First Pass20 N.m15 lb ft
Second Pass+210° turn
Front Lower Shock Bolts25 N.m18 lb ft
Front Outer Tie Rod to Knuckle Nut70 N.m52 lb ft
Front Stabilizer Shaft Bolts60 N.m44 lb ft
Power Steering Gear to Frame Mounting Bolts95 N.m70 lb ft
Rear Frame Insulator Anchor Bolts to Body-Front265 N.m195 lb ft
Rear Frame Insulator Anchor Bolts to Body-Rear191 N.m141 lb in
Rear Shock Lower Bolt150 N.m111 lb ft
Stabilizer Shaft Link Nut50 N.m37 lb ft
Washer Solvent Bottle Bracket Nut10 N.m89 lb in
Toe Hook Bolts25 N.m18 lb ft
Toe Hook Nuts25 N.m18 lb ft
Transmission Mount Lower Nuts60 N.m44 lb ft
Transmission Support Bolts60 N.m44 lb ft

Fastener Tightening Specifications

Scheme 1

Scheme 1: Dimensions - Body
Scheme 1: Dimensions - Body
LocationDescriptionLengthWidthHeight
1Zero Line 19 mm Gage Hole0702 mm965 mm
2Datum Line000
ADoor Hinge Attach140 mm814 mm612 mm
BDoor Hinge Attach140 mm806 mm955 mm
CDoor Hinge Attach1217 mm819 mm975 mm
DUpper Door Lock Striker Attach1185 mm78 mm834 mm
EDoor Hinge Attach1169 mm819 mm645 mm
FUpper Door Lock Striker Attach2157 mm781 mm1022 mm
All dimensions are measured from a zero line, a center line, and a common datum. All dimensions are symmetrical unless otherwise specified.

Dimensions - Body

Scheme 2

Scheme 2: Point-to-Point Measurements
Scheme 2: Point-to-Point Measurements
LocationLength
A1053 mm
B1082 mm
C1365 mm
D875 mm
E943 mm
F845 mm
G1042 mm
H898 mm
All dimensions are measured from a zero line, a center line, and a common datum. All dimensions are symmetrical unless otherwise specified.

Dimensions - Body

Scheme 3

Scheme 3: Dimensions - Underbody
Scheme 3: Dimensions - Underbody
LocationDescriptionLengthWidthHeight
1Zero Line 19 mm Hole0702 mm965 mm
2Datum Line000
3Center Line0702 mm965 mm
A10 mm Bumper Mounting1169 mm405 mm579 mm
B32 mm x 17 mm Gage Hole343 mm408 mm425 mm
C56 mm Cradle Attach1815 mm637 mm425 mm
D16 mm x 20 mm Gage Hole2628 mm478 mm645 mm
E16 mm x 20 mm Gage Hole2982 mm478 mm649 mm
F18 mm Bumper Mounting3204 mm478 mm649 mm
All dimensions are measured from a zero line, a center line, and a common datum. All dimensions are symmetrical unless otherwise specified.

Dimensions - Body

Underbody Inspection

  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/cts/i-2002-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
  2. Check for obvious deterioration of the floor pan.
  3. Check for loose dirt and corrosion around the inside of the floor pan reinforcement member access holes. This is the first indication that corrosion may exist in hidden areas, and repairs may be required before the final cleaning and protective treatment is performed.
  4. Using a chisel, ensure that the drain provisions in the floor pan reinforcement members are open. There are drain holes in the body side panels also. These holes can be opened using a punch or a drift. The side panel drain holes are in the rear section of the rocker panels, and in the lower rear quarter panels.

Tools Required

J 24319-B Steering Linkage and Tie Rod Puller. See Special Tools and Equipment .

J 39580 Engine Support Stand. See Special Tools and Equipment .

Removal Procedure

  1. Install the engine support fixture. Refer to «Engine Support Fixture»(/cadillac/cts/i-2002-2007/remont/mechanical/#engine-mechanical-32l__engine-support-fixture) in Engine Mechanical - 2.6L and 3.2L or to «Engine Support Fixture»(/cadillac/cts/i-2002-2007/remont/mechanical/#engine-mechanical-57l-ls6) in Engine Mechanical - 5.7L.
  2. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/cts/i-2002-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
  3. Remove the front wheels. Refer to «Tire and Wheel Removal and Installation»(/cadillac/cts/i-2002-2007/remont/wheel-tire-system/#tires-and-wheels) in Tires and Wheels.
  4. Remove the front air deflector. Refer to «Air Deflector Replacement - Front»(/cadillac/cts/i-2002-2007/remont/exterior-body-panels/#body-front-end) in Body Front End.
  5. Disconnect the electrical harness retainers (1) securing the engine harness to the frame.
  6. Disconnect the left rearward retainer (1).
  7. Disconnect the right rearward retainer (1).
  8. Disconnect the anti-lock brake wiring harness from the lower control arms.
  9. Loosen the brake line bracket nut (1).
  10. Disconnect the brake lines from the frame.
  11. Using mechanics wire (3), support the radiator and AC condenser assembly to the front inner energy absorber bracket bolt (1).
  12. Remove the washer bottle bracket nuts and bracket (3).
  13. Loosen the brake pressure modulator valve nuts (1) in order to separate the brake pressure modulator valve (2) from the bracket assembly.
  14. Loosen the stabilizer shaft mounting bolts.
  15. Remove the lower stabilizer shaft link retaining nut.
  16. Remove the stabilizer shaft link from the lower control arm.
  17. Remove the power steering pressure hose retaining nut from the air conditioning compressor.
  18. Position power steering pressure hose aside.
  19. Remove the power steering gear mounting bolts.
  20. Using mechanics wire (4) support the power steering gear (3) to the bolt bracket installed in the oil pan.
  21. Remove the outer tie rod retaining nut.
  22. Using J 24319-B , separate the outer tie rod from the steering knuckle. See «Special Tools and Equipment»(/cadillac/cts/i-2002-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) .
  23. Remove the lower shock bolts (1).
  24. Disconnect the lower ball joint from the steering knuckle and position the knuckle assembly away from the lower control arms. Refer to «Lower Control Arm Replacement»(/cadillac/cts/i-2002-2007/remont/suspension-front/#front-suspension-system__lower-control-arm-replacement) in Front Suspension
  25. Remove the engine mounts lower retaining nuts (2).
  26. Install J 39580 under the frame. See «Special Tools and Equipment»(/cadillac/cts/i-2002-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) .
  27. Lower the vehicle to the frame support table.
  28. Remove the frame mounting bolts (2).
  29. With the aid of an assistant, carefully raise the body from the frame.
  30. Ensure when raising the body the following items are clear from the frame. The brake pipes The steering knuckle assembly The wheel speed sensor electrical harness
  31. Remove the lower control arms. Refer to «Lower Control Arm Replacement»(/cadillac/cts/i-2002-2007/remont/suspension-front/#front-suspension-system__lower-control-arm-replacement) in Front Suspension.
  32. Remove the stabilizer shaft. Refer to «Stabilizer Shaft Replacement»(/cadillac/cts/i-2002-2007/remont/suspension-front/#front-suspension-system) in Front Suspension.
  33. With the aid of an assistant, remove the frame from the support fixture.

Installation Procedure

  1. Install the lower control arm to the frame. Refer to «Lower Control Arm Replacement»(/cadillac/cts/i-2002-2007/remont/suspension-front/#front-suspension-system__lower-control-arm-replacement) in Front Suspension.
  2. Install the stabilizer shaft to the frame. Refer to «Stabilizer Shaft Replacement»(/cadillac/cts/i-2002-2007/remont/suspension-front/#front-suspension-system) in Front Suspension. Do not tighten the stabilizer shaft mounting bolts at this time.
  3. With the aid of an assistant, position and secure the new frame assembly to the support fixture.
  4. With the aid of an assistant, carefully lower the body to the frame.
  5. Ensure the following components are clear from the frame. The electrical harness The steering knuckle assembly The brake pipes
  6. Install the frame mountings bolts (2). Tighten: Tighten the bolts to 191 N.m (141 lb ft).
  7. Raise the vehicle.
  8. Install the engine mount lower retaining nuts (2). Tighten: Tighten the nuts to 50 N.m (37 lb ft).
  9. Remove the J 39580 from under the vehicle. See «Special Tools and Equipment»(/cadillac/cts/i-2002-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) .
  10. Remove the mechanics wire (4) supporting the power steering gear (3).
  11. Install the power steering gear mounting bolts. Tighten: Tighten the bolts to 95 N.m (70 lb ft).
  12. Install the ball joint to the steering knuckle.
  13. Install the lower ball joint retaining nut. Tighten: Tighten the nut to 20 N.m (15 lb ft) plus an additional 210 degree rotation.
  14. Install the outer tie rod to the steering knuckle.
  15. Install the outer tie rod to steering knuckle retaining nut. Tighten: Tighten the nut to 70 N.m (52 lb ft).
  16. Tighten the stabilizer shaft bolts. Tighten: Tighten the bolts to 60 N.m (44 lb ft).
  17. Install the stabilizer shaft link to the lower control arms.
  18. Install the stabilizer shaft link nuts. Tighten: Tighten the nuts to 50 N.m (37 lb ft).
  19. Install the lower shock mounting bolts (1). Tighten: Tighten the bolts to 25 N.m (18 lb ft).
  20. Install the brake pipe connection to the frame with the nuts (1). Tighten: Tighten the nuts to 10 N.m (89 lb in).
  21. Install the brake pressure modulator valve nuts (1). Tighten: Tighten the nuts to 10 N.m (89 lb in).
  22. Install the washer bottle bracket and nuts (3). Tighten: Tighten the nuts to 10 N.m (89 lb in).
  23. Remove the mechanics wire (3) supporting the radiator.
  24. Secure the energy absorber bracket nut (1). Tighten: Tighten the nut to 25 N.m (18 lb ft).
  25. Install the anti-lock brake wiring harness to the lower control arms.
  26. Secure the right rearward retainer (1).
  27. Secure the left rearward retainer (1).
  28. Secure the engine electrical harness retainers (1) to the frame.
  29. Install the front air deflector. Refer to «Air Deflector Replacement - Front»(/cadillac/cts/i-2002-2007/remont/exterior-body-panels/#body-front-end) in Body Front End.
  30. Install the front tires and wheels. Refer to «Tire and Wheel Removal and Installation»(/cadillac/cts/i-2002-2007/remont/wheel-tire-system/#tires-and-wheels) in Tires and Wheels.
  31. Lower the vehicle.
  32. Remove the engine support fixture. Refer to «Engine Support Fixture»(/cadillac/cts/i-2002-2007/remont/mechanical/#engine-mechanical-32l__engine-support-fixture) in Engine Mechanical - 2.6L and 3.2L or to «Engine Support Fixture»(/cadillac/cts/i-2002-2007/remont/mechanical/#engine-mechanical-57l-ls6) in Engine Mechanical - 5.7L.
  33. Align the vehicle. Refer to «Measuring Wheel Alignment»(/cadillac/cts/i-2002-2007/remont/wheel-alignment/#wheel-alignment-specifications-adjustment-procedures__measuring-wheel-alignment) in Wheel Alignment.

J 39580 Engine Support Stand. See Special Tools and Equipment .

  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/cts/i-2002-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
  2. Remove the rear wheels. Refer to «Tire and Wheel Removal and Installation»(/cadillac/cts/i-2002-2007/remont/wheel-tire-system/#tires-and-wheels) in Tires and Wheels.
  3. Remove the exhaust system. Refer to «Exhaust System Replacement (LA3, LY9)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-la3-ly9) «Exhaust System Replacement (LY7)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system) «Exhaust System Replacement (LS6)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-ls6) in Engine Exhaust.
  4. Remove the driveshaft from the differential. Refer to «Propeller Shaft Replacement (Automatic Transmission)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) «Propeller Shaft Replacement (Manual Transmission)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) «Propeller Shaft Replacement (CTS-V)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) in Propeller Shaft.
  5. Install the support fixture (3), in order to raise the lower control arm to relieve the tension from the shock.
  6. Remove the shocks lower mounting bolt (2).
  7. Remove the support fixture.
  8. Disconnect the electrical connectors for the rear wheel speed sensors.
  9. Disconnect the retainer clips on the park brake cables for the wheel speed sensors wiring harness.
  10. Disconnect the rear brake pipe lines (1) forward of the rear wheelhouse.
  11. Remove the fastener for the brake pipe bracket (1).
  12. Remove the brake pipe bracket (2) from the studs in the body.
  13. Disconnect the intermediate park brake cable (2) from the front park brake cable connector.
  14. Disconnect the intermediate park brake cable (2) from the rear park brake cable connector (1).
  15. Position the frame support table J 39580 under the vehicle. See «Special Tools and Equipment»(/cadillac/cts/i-2002-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) .
  16. Using J 39580 , lower the vehicle to the frame support table. See «Special Tools and Equipment»(/cadillac/cts/i-2002-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) .
  17. Remove the frame to body mounting bolts (4) and washers (3).
  18. Carefully raise the vehicle from the rear frame assembly.
  19. Remove the following components from the rear frame. «Headlamp Leveling Sensor Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/exterior-lights/#lighting-systems-introduction-and-removal-installation) in Lighting Systems. «Lower Control Arm Replacement»(/cadillac/cts/i-2002-2007/remont/suspension-rear/#rear-suspension-system) «Upper Control Arm Replacement»(/cadillac/cts/i-2002-2007/remont/suspension-rear/#rear-suspension-system) The rear brake pipes «Park Brake Cable Replacement - Left Rear»(/cadillac/cts/i-2002-2007/remont/parking-brake-system/#parking-brake-system) or «Park Brake Cable Replacement - Right Rear»(/cadillac/cts/i-2002-2007/remont/parking-brake-system/#parking-brake-system) in Park Brake. «Stabilizer Shaft Replacement»(/cadillac/cts/i-2002-2007/remont/suspension-rear/#rear-suspension-system) «Adjustment Link Replacement»(/cadillac/cts/i-2002-2007/remont/suspension-rear/#rear-suspension-system) «Trailing Arm Replacement»(/cadillac/cts/i-2002-2007/remont/suspension-rear/#rear-suspension-system) «Stabilizer Shaft Link Replacement»(/cadillac/cts/i-2002-2007/remont/suspension-rear/#rear-suspension-system) «Brake Caliper Replacement - Rear (CTS)»(/cadillac/cts/i-2002-2007/remont/mechanical-hydraulic/#disc-brake-system__brake-caliper-replacement-rear-cts) «Brake Caliper Replacement - Rear (CTS-V)»(/cadillac/cts/i-2002-2007/remont/mechanical-hydraulic/#disc-brake-system__brake-caliper-replacement-rear-cts-v) in Disc Brakes. «Brake Rotor Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/mechanical-hydraulic/#disc-brake-system__brake-rotor-replacement-rear) in Disc Brakes. «Differential Replacement»(/cadillac/cts/i-2002-2007/remont/differentials-drive-axles/#rear-drive-axle) in Drive Axle.
  20. With the aid from an assistant, remove the frame from the hydraulic jack.
  1. With the aid from an assistant, position and secure the new rear frame (2) on the engine support fixture.
  2. Install the following components to the rear frame assembly. «Differential Replacement»(/cadillac/cts/i-2002-2007/remont/differentials-drive-axles/#rear-drive-axle) in Drive Axle. «Brake Rotor Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/mechanical-hydraulic/#disc-brake-system__brake-rotor-replacement-rear) in Disc Brakes. «Brake Caliper Replacement - Rear (CTS)»(/cadillac/cts/i-2002-2007/remont/mechanical-hydraulic/#disc-brake-system__brake-caliper-replacement-rear-cts) «Brake Caliper Replacement - Rear (CTS-V)»(/cadillac/cts/i-2002-2007/remont/mechanical-hydraulic/#disc-brake-system__brake-caliper-replacement-rear-cts-v) in Disc Brakes. «Stabilizer Shaft Link Replacement»(/cadillac/cts/i-2002-2007/remont/suspension-rear/#rear-suspension-system) «Trailing Arm Replacement»(/cadillac/cts/i-2002-2007/remont/suspension-rear/#rear-suspension-system) «Adjustment Link Replacement»(/cadillac/cts/i-2002-2007/remont/suspension-rear/#rear-suspension-system) «Stabilizer Shaft Replacement»(/cadillac/cts/i-2002-2007/remont/suspension-rear/#rear-suspension-system) «Park Brake Cable Replacement - Left Rear»(/cadillac/cts/i-2002-2007/remont/parking-brake-system/#parking-brake-system) or «Park Brake Cable Replacement - Right Rear»(/cadillac/cts/i-2002-2007/remont/parking-brake-system/#parking-brake-system) in Park Brake. The rear brake pipes «Upper Control Arm Replacement»(/cadillac/cts/i-2002-2007/remont/suspension-rear/#rear-suspension-system) «Lower Control Arm Replacement»(/cadillac/cts/i-2002-2007/remont/suspension-rear/#rear-suspension-system) «Headlamp Leveling Sensor Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/exterior-lights/#lighting-systems-introduction-and-removal-installation) in Lighting Systems.
  3. Index the rear coil springs to the spring insulators.
  4. Ensure the intermediate park brake cable is positioned over left side frame assembly on the left side.
  5. Lower the vehicle to the frame.
  6. Position the coil springs (3) to the upper spring insulator (2).
  7. Index the rear side frame mounts to the rear locator sleeves (1) located on the body.
  8. Lower the vehicle until the frame mounts contact the body rail.
  9. Install the rear frame washers (3) and anchor bolts (4). Tighten: Tighten the front bolts to 265 N.m (195 lb ft). Tighten the rear bolts to 191 N.m (141 lb ft).
  10. Raise the vehicle.
  11. Remove the J 39580 from under the vehicle. See «Special Tools and Equipment»(/cadillac/cts/i-2002-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) .
  12. Install the support fixture (3) in order to raise the lower control arms for ease of lower shock bolt installation (2).
  13. Install the lower shock bolt. Tighten: Tighten the bolt (2) to 150 N.m (111 lb ft).
  14. Repeat the above step for the other side.
  15. Remove the support fixture (3).
  16. Connect the intermediate park brake cable (2) to the rear park brake cable connector (1).
  17. Connect the intermediate park brake cable (2) to the front park brake cable connector.
  18. Position the brake pipe bracket (2) to the body studs.
  19. Install the brake pipe bracket retaining nuts (1) Tighten: Tighten the nuts to 10 N.m (89 lb in).
  20. Connect the rear brake lines (1) at the forward rear wheelhouse. Tighten: Tighten the lines to 15 N.m (11 lb ft).
  21. Connect the rear wheel speed sensor electrical connectors.
  22. Secure the electrical harness retainer clips to the park brake cables.
  23. Install the rear wheels. Refer to «Tire and Wheel Removal and Installation»(/cadillac/cts/i-2002-2007/remont/wheel-tire-system/#tires-and-wheels) in Tires and Wheels.
  24. Lower the vehicle.
  25. Bleed the hydraulic brake system. Refer to «Hydraulic Brake System Bleeding (Manual)»(/cadillac/cts/i-2002-2007/remont/mechanical-hydraulic/#hydraulic-brake-system) «Hydraulic Brake System Bleeding (Pressure)»(/cadillac/cts/i-2002-2007/remont/mechanical-hydraulic/#hydraulic-brake-system) in Hydraulic Brakes.
  26. Align the vehicle. Refer to «Measuring Wheel Alignment»(/cadillac/cts/i-2002-2007/remont/wheel-alignment/#wheel-alignment-specifications-adjustment-procedures__measuring-wheel-alignment) in Wheel Alignment.
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/cts/i-2002-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
  2. Remove and support the exhaust from the catalytic converters. Refer to «Exhaust System Replacement (LA3, LY9)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-la3-ly9) «Exhaust System Replacement (LY7)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system) «Exhaust System Replacement (LS6)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-ls6) in Engine Exhaust.
  3. Remove the transmission mount lower mounting nuts.
  4. Support the transmission with a screw jack and block of wood.
  5. Remove the outer transmission mounting bolts.
  6. Remove the inner transmission mounting bolts.
  7. Remove the transmission support from the vehicle.
  1. Install the transmission support to the vehicle.
  2. Install the inner transmission support mounting bolts. Do not tighten at this time.
  3. Install the outer transmission mounting bolts. Tighten: Tighten all the support bolts to 60 N.m (44 lb ft).
  4. Remove the screw jack.
  5. Install the transmission mount lower mounting nuts. Tighten: Tighten the nuts to 60 N.m (44 lb ft).
  6. Install the exhaust system to the catalytic converters. Refer to «Exhaust System Replacement (LA3, LY9)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-la3-ly9) «Exhaust System Replacement (LY7)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system) «Exhaust System Replacement (LS6)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-ls6) in Engine Exhaust.
  7. Remove the support from the exhaust system.
  8. Lower the vehicle.
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/cts/i-2002-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
  2. Remove the front air deflector. Refer to «Air Deflector Replacement - Front»(/cadillac/cts/i-2002-2007/remont/exterior-body-panels/#body-front-end) in Body Front End.
  3. Remove the tow hook mounting nuts (1).
  4. Remove the tow hook mounting bolt (2).
  5. Remove the tow hook from the vehicle.
  1. Install the tow hook to the vehicle.
  2. Install the tow hook mounting bolt (2).
  3. Install the tow hook mounting nuts (1). Tighten: Tighten the nuts to 25 N.m (18 lb ft). Tighten the bolt to 25 N.m (18 lb ft).
  4. Install the front air deflector. Refer to «Air Deflector Replacement - Front»(/cadillac/cts/i-2002-2007/remont/exterior-body-panels/#body-front-end) in Body Front End.
  5. Lower the vehicle.
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/cts/i-2002-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
  2. Remove the bolts (1) from the tow hook.
  3. Remove the nut (2) from the tow hook.
  4. Remove the tow hook from the vehicle.
  1. Install the tow hook to the vehicle.
  2. Install the bolts (1) to the tow hook.
  3. Install the nut (2) to the tow hook. Tighten: Tighten the bolts and nut to 25 N.m (18 lb ft).
  4. Lower the vehicle.

The following components are supported by a front crossmember frame which is rigidly bolted to the body rail at 4 locations

  1. The engine
  2. The transmission mounts
  3. The front suspension lower control arms
  4. The steering linkage

The following components are supported by the rear suspension frame which is attached to the body rail through rubber insulators at 3 locations

  1. The rear differential
  2. The rear axles
  3. The rear suspension components

The underbody frames must be properly aligned to maintain the correct suspension and wheel alignment.

The individual underbody components contribute directly to the overall strength of the unibody. Use proper welding techniques during service repair operations. Refer to Collision Repair for welding information and for vehicle preparation.

The components must be corrosion protected whenever body repair operations damage or destroy the original sealing surfaces. Use a two part catalyzed primer such as PPG DP40 or equivalent when corrosion protection is needed to welded surfaces. Apply the sealers and anti-corrosion materials as necessary. Refer to Anti-Corrosion Treatment and Repair in Paint and Coatings. Do not combine paint systems. Refer to Basecoat/Clearcoat Paint Systems in Paint and Coatings for further information.

Special Tools

Special Tools Illustration Tool Number/Description J 24319-B Steering Linkage and Tie Rod Puller J 39580 Engine Support Stand

Scheme 4

Scheme 4: Special Tools
Scheme 4: Special Tools

Scheme 5

Scheme 5
Scheme 5

See also:
• Lifting and Jacking the Vehicle
• Engine Support Fixture
• Engine Support Fixture
• Tire and Wheel Removal and Installation
• Air Deflector Replacement - Front
• Lower Control Arm Replacement
• Stabilizer Shaft Replacement
• Fastener Notice
• Measuring Wheel Alignment
• Exhaust System Replacement (LA3, LY9)
• Exhaust System Replacement (LY7)
• Exhaust System Replacement (LS6)
• Propeller Shaft Replacement (Automatic Transmission)
• Headlamp Leveling Sensor Replacement - Rear
• Lower Control Arm Replacement
• Park Brake Cable Replacement - Left Rear
• Brake Caliper Replacement - Rear (CTS)
• Brake Caliper Replacement - Rear (CTS-V)
• Brake Rotor Replacement - Rear
• Differential Replacement
• Hydraulic Brake System Bleeding (Manual)
• Anti-Corrosion Treatment and Repair
• Basecoat/Clearcoat Paint Systems
• Special Tools and Equipment