2002 Tahoe rear suspension torque specifications

The clunking noise you're hearing from the rear of your 2006 Mazda 6 after installing new shocks could be caused by a few different issues. Here are a few possibilities:

1. Loose or worn suspension components: If any of the suspension components are loose or worn, they can make a clunking noise when the vehicle moves over bumps or uneven surfaces.
2. Misaligned or damaged control arm bushings: The control arm bushings can become misaligned or damaged, which can cause a clunking noise when the vehicle is driven.
3. Worn sway bar links: The sway bar links connect the sway bar to the suspension and if they are worn, they can cause a clunking noise when the vehicle is driven.
4. Improper installation of the new shocks: The clunking noise may be caused by improper installation of the new shocks, such as not tightening the bolts properly.

It's best to have a professional mechanic take a look and diagnose the issue. They will be able to identify the specific cause of the noise and make the necessary repairs.

So your main problem is body roll? Did you replace the swaybar bushings? Replacing my swaybar bushing on my 06 fixed my body roll problems. If you did, did you get the right size? There are 2 different sizes of bushings. $3500 for the front end??? Look at Detroit Axle next time. I did my entire suspension for $410, including hubs, shocks, struts, UCA, LCA, Links, inner, and outter tie rods.

Chevy Truck Front and Rear Suspension Specifications Fastener Torque...

Would need to know what DTC'S - diagnostic trouble codes are stored in the module for the autoride suspension . Hooking up a professional type scan tool ,looking at input data to the module etc... Looking at a wiring diagram an testing electrical circuit's using a DMM - digital multi-meter . Reading how the system works ,what all involved in making the system work . This is how a professional Tech would go about diagnosing this .

The automatic level control (ALC) system maintains a desired rear suspension position under all types of towing, hauling and loading conditions. The following components are involved in the operation of the ALC system:
• Air line tubing--Pressurized air from the ALC compressor is pumped to each of the rear shocks via air line tubing.
• Air drier--Pressurized air from the compressor is run through a drier containing a moisture absorbing chemical preventing water accumulation in the rear shocks.
• Compressor--Supplies pressurized air to the rear shocks
• Compressor motor relay--The relay supplies battery positive voltage to the ALC compressor motor.
• Pressure sensor--The electronic suspension control module (ESCM) module provides a 5-volt reference and low reference to the ALC pressure sensor. The module receives the signal voltage that is relative to the air pressure applied to the rear shocks.
• ESCM--Controls the ALC system and electronic suspension control (ESC) system and detects failures in both. The module monitors inputs from the position sensors, and pressure sensor to determine when to raise and lower the vehicle to trim height as the vehicle is loaded or unloaded. The module limits pump activation to 255 seconds to prevent thermal damage.
• Exhaust valve--An electric solenoid activated by the ESCM to vent air pressure from the rear shocks.
• Left and right rear suspension position sensors--The module provides a 5-volt reference and low reference to all 4 of the body-to-wheel suspension position sensors. The sensors send the ESCM a signal voltage that is relative to the rear suspension ride height
• Left and right rear shock absorbers with internal air chambers and dampers--Dampens the rear suspension and maintains trim height depending on the air pressure applied.

• Air Suspension
• Front Suspension
• Rear Suspension
• • Coil Spring Rear Suspension
  • Coil Springs
  • Lower Ball Joint
  • Lower Control Arms
  • Shock Absorbers
  • Stabilizer Bar Sway Bar
  • Strut Macpherson Strut Assembly
  • Upper Control Arms
  • Wheel Bearings
• Specifications
• Wheel Alignment

• HOME
• REPAIR INFO
• 1999 LEXUS ES300 3.0L SFI DOHC 6CYL REPAIR GUIDE
• SUSPENSION
• REAR SUSPENSION
• COIL SPRING REAR SUSPENSION

Lexus Car ES, IS, LS 1998-06
Coil Spring Rear Suspension

• HUB & BEARINGS
• STABILIZER BAR
• STRUT & COIL SPRING

Print

Hub & Bearings

Adjustment
Check the backlash in bearing shaft direction and the axle hub deviation. Maximum for backlash should be 0.0020 in. (0.05mm) and for axle hub deviation 0.020 in. (0.05mm).

Fig. Checking wheel bearings for excessive play


NOTE The rear wheel bearings are non-adjustable. If the wheel bearing is out of specifications, replace the wheel bearing.
Removal & Installation

1. Before servicing the vehicle, refer to the Precautions section.
2. Raise and safely support the vehicle.
3. Remove or disconnect the following:
   
   Rear tire and wheel assembly Rear stabilizer link Rear axle shaft nut Rear disc brake caliper and disc Speed sensor Parking brake assembly at the wheel hub No. 1 and 2 upper control arm assembly No. 1 and 2 rear suspension arm assembly Toe control link Rear axle from hub assembly using a plastic hammer No. 2 rear wheel bearing dust deflector using a screwdriver 4 bolts and rear axle hub and bearing assembly from the axle carrier assembly
   

To install:

1. Install or connect the following:
   
   Hub on the carrier and tighten the bolts to 52 ft. lbs. (70 Nm) No. 2 rear wheel bearing dust deflector using a screwdriver Rear axle into hub assembly No. 1 and 2 upper control arm assembly. Torque the new nut to the No. 2 rear upper control arm to 52 ft. lbs. (70 Nm). Temporarily tighten the No. 1 arm bolt. No. 1 and 2 rear suspension arm assembly. Temporarily tighten. Toe control link. Torque new nut to 52 ft. lbs. (70 Nm). Rear stabilizer link. Torque to 20 ft. lbs. (27 Nm). Parking brake assembly at the wheel hub Rear speed sensor Rear axle shaft nut. Torque to 214 ft. Lbs. (290 Nm) and stake the nut with a chisel and hammer. Rear brake disc and disc brake caliper
   
2. Adjust the parking brake.
3. Stabilize the suspension as follows :
   1. Install the wheel(s).
   2. Lower the vehicle and bounce it up and down several times to stabilize the rear suspension.
   3. Raise the vehicle.
   4. Remove the wheel.
   5. Jack up the rear lower suspension armplacing a wood block in between. Apply a load to the suspension so that the lower suspension arm is plkaced in a horizontal position.
   
   
4. Fully tighten the No. 1 rear upper control arm assembly to 119 ft. lbs. (161 Nm).
5. Fully tighten the No. 1 rear suspension arm assembly to 70 ft. lbs. (95 Nm).
6. Fully tighten the No. 2 rear suspension arm assembly to 119 ft. lbs. (161 Nm).
   
   Rear tire and wheel assembly
   

1. Before servicing the vehicle, refer to the Precautions section.
2. Raise and safely support the vehicle.
3. Remove or disconnect the following:
   NOTE If it is necessary to replace the hub or bearing, replace the components as an assembly.
   
   
   Rear tire and wheel assembly If equipped with rear disc brakes, the caliper mounting bolts. Leave the brake line connected and suspend the assembly out of the way. Brake rotor or drum 4 bolts and pull off the rear axle hub O-ring
   

To install:

1. Install or connect the following:
   
   Hub on the carrier and tighten the bolts to 59 ft. lbs. (80 Nm) Rotor or drum Caliper, f equipped with rear disc brakes and tighten the bolts to 34 ft. lbs. (64 Nm) Wheel
   

1. Before servicing the vehicle, refer to the Precautions section.
2. If equipped with air suspension, move the height control switch in the trunk area to the OFF position.
3. Remove or disconnect the following:
   
   Negative battery cable Rear wheel(s) Height control sensor link from the lower control arm Anti-lock Brake System (ABS) speed sensor and wiring harness Brake caliper bracket from the rear axle carrier by removing the 2 bolts. Support the caliper with a piece of wire. Brake rotor Parking brake shoes and cable Cotter pin, lock cap and the nut holding the halfshaft to the rear axle Suspension member brace by removing the 2 bolts Halfshaft bolts and washers Halfshaft from the vehicle Strut rod
   
4. Place matchmarks on the adjusting cam and body for the No. 1 control arm.
5. Remove or disconnect the following:
   
   Nut and adjusting cam Nut on the axle carrier side of the No. 1 lower control arm Separate the control arm from the axle carrier No. 1 lower control arm Stabilizer bar link from the No. 2 lower control arm.
   
6. Place matchmarks on the adjusting cam and body.
7. Remove or disconnect the following:
   
   Nut and adjusting cam from the No. 2 lower control arm Nut and bolt holding the No. 2 lower control arm to the axle carrier No. 2 control arm from the vehicle Nut and bolt on the lower side of the strut assembly 2 upper control arm set nuts and bolts Axle carrier with the upper control arm
   
8. Secure the axle carrier in a vise.
9. Remove or disconnect the following:
   
   Nut holding the upper control arm to the axle carrier and remove the control arm Dust deflector. Use a suitable prytool. Oil seal
   
   

   Fig. Removing the oil seal (inner)-LS 430
   
   

10. Remove the 2 bolts and nuts and shift the backing the plate towards the hub side (outside).
11. Remove or disconnect the following:
    
    Axle hub
    
    

    Fig. Removing the axle hub from the axle carrier-LS 430
    Backing plate. Inner race (outside) from the axle hub
    
    

    Fig. Removing the inner race (outside) from the axle hub-LS 430
    Oil seal (outer) from the axle
    
    

    Fig. Removing the oil seal (outer)-LS 430
    Snapring from inside the axle housing Bearing from the axle housing
    

To install:

1. Install or connect the following:
   
   New bearing to the axle housing Snapring to the axle carrier, using snapring pliers New outer oil seal. Coat the oil seal lip with multipurpose grease.
   
   

   Fig. Installing the oil seal (outer)-LS 430
   Backing plate to the axle housing. Do NOT install the bolts or nuts at this time. Inner race (inside) to the axle housing Axle hub to the axle housing Backing plate in position. Tighten the bolts and nuts to 43 ft. lbs. (59 Nm). New oil seal (inner) to the axle housing. Coat the oil seal lip with multipurpose grease.
   
   

   Fig. Installing the oil seal (inner)-LS 430
   New dust deflector. Be sure to align the hose for the ABS speed sensor in the dust deflector and axle carrier. Upper control arm to the axle carrier by installing the nut. Tighten the nut to 80 ft. lbs. (108 Nm). Axle carrier and upper control arm to the vehicle as an assembly 2 upper control arm set bolts and tighten the bolts to 121 ft. lbs. (164 Nm) Bolt and nut holding the strut to the axle carrier. Tighten to 101 ft. lbs. (137 Nm). Bolt and nut connecting the No. 2 lower control arm to the axle carrier. Tighten the bolt to 60 ft. lbs. (81 Nm). Nut and adjusting cam to hold the No. 2 lower control arm to the body. Align the adjusting cam marks and tighten the nut to 57 ft. lbs. (78 Nm). Stabilizer bar link to the No. 2 lower control arm and tighten the nut to 48 ft. lbs. (65 Nm) No. 1 lower control arm to the axle carrier and body. Install the nut to hold the No. 1 lower control arm to the axle carrier. Tighten the nut to 43 ft. lbs. (59 Nm). Nut and adjusting cam to hold the No. 1 lower control arm to the body. Align the matchmarks and tighten the nut to 57 ft. lbs. (78 Nm). Strut rod to the axle carrier and body. Install the bolt and nut to hold the strut rod to the body. Tighten to 57 ft. lbs. (78 Nm). Bolt and nut to hold the strut rod to the axle carrier. Tighten to 136 ft. lbs. (184 Nm) Parking brake shoes and cable Outboard joint side of the halfshaft and align the matchmarks on the side gear shaft and the halfshaft. Coat the threads with clean oil and install the hexagon bolts. Tighten bolts to 61 ft. lbs. (83 Nm). Suspension member brace with the 2 bolts. Tighten the 2 bolts to 37 ft. lbs. (50 Nm). Nut to hold the halfshaft to the rear axle. Tighten the nut to 213 ft. lbs. (289 Nm). Lock cap and cotter pin Brake disc to the axle hub with the matchmarks aligned. Install the 2 screws and tighten the screws to 48 inch lbs. (5 Nm). Brake caliper to the vehicle and install the 2 bolts. Tighten the bolts to 77 ft. lbs. (104 Nm). ABS speed sensor and wiring harness Height control sensor link with the matchmarks aligned. Tighten the nut to 48 inch lbs. (5 Nm). Rear wheel(s) Negative battery cable
   

2. Lower the vehicle and turn ON the air suspension switch.

Fig. Exploded view rear carrier assembly, hub and bearing-

1. Before servicing the vehicle, refer to the Precautions section.
2. Remove or disconnect the following:
   WARNING Be careful not to damage the boot and ABS sensor
   
   
   Rear wheel(s) Height control sensor link from the lower control arm Anti-lock Brake System (ABS) speed sensor and wiring harness Brake caliper bracket from the rear axle carrier by removing the 2 bolts. Support the caliper with a piece of wire. Brake rotor Parking brake shoes and cable Toe control link Separate upper control arm assembly Shock absorber from axle carrier Suspension arms No 1 and 2 from axle carrier Rear axle from carrier
   
   
   Wheel bearing dust deflector 4 bolts and axle & bearing hub assembly
   

To install:

1. Install or connect the following:
   
   4 bolts and axle & bearing assembly. Tighten to 48 ft. lbs (65 Nm) Rear wheel bearing dust deflector Rear drive axle Upper control arm. Temporarily tighten No 2 and No 1 suspension arms. Tighten to 52 ft. lbs. (70 Nm) Shock absorber. Temporarily tighten Toe control link. Tighten to 37 ft. lbs. (50 Nm) Fully tighten upper control arm. Tighten to 52 ft. lbs. (70 Nm) Height control sensor Parking brake shoes and cable Speed sensor Rear disc brake caliper Fully tighten shock with new nut to 52 ft. lbs. (70 Nm) Rear tire
   
2. Inspect and adjust rear wheel alignment
3. Check ABS speed sensor signal

1. Before servicing the vehicle, refer to the Precautions section.
2. Remove or disconnect the following:
   
   Rear wheel Wheel speed sensor Axle halfshaft Brake caliper and rotor Parking brake shoes Parking brake cable No. 1 lower suspension arm bolt No. 2 lower suspension arm bolt Toe control link Upper ball joint Axle carrier from the vehicle
   
3. Press the hub out of the wheel bearing, then remove the backing plate.
4. Remove the snapring, then press the wheel bearing out of the axle carrier.

To install:

NOTE Use a new toe control link nut for assembly.

1. Installation is the reverse of the removal procedure, while using the following torque values:
   
   Backing plate bolts: 43 ft. lbs. (59 Nm) No. 1 lower suspension arm bolt: 55 ft. lbs. (75 Nm) No. 2 lower suspension arm bolt: 81 ft. lbs. (110 Nm) Toe control link nut: 36 ft. lbs. (49 Nm) Upper ball joint nut: 80 ft. lbs. (108 Nm) Brake caliper support bolts: 77 ft. lbs. (104 Nm) Rear wheel lug nuts: 76 ft. lbs. (103 Nm)
   

Fig. Exploded view rear Axle carrier and hub assembly-ES 330

1. Before servicing the vehicle, refer to the Precautions section.
2. Remove or disconnect the following:
   
   Rear tire and wheel assembly Brake caliper support bracket Brake rotor Skid control sensor wire 4 bolts and rear hub and bearing assembly Skid control sensor
   

To install:

1. Install or connect the following:
   NOTE Inspect bearing back lash and hub deviation
   
   
   Skid control sensor Rear axle hub and bearing assembly with 4 bolts. Tighten to 59 ft. lbs. (80 Nm) Skid control sensor wire
   
   
   Rear disc Rear disc brake caliper assembly. Tighten to 46 ft. lbs (62 Nm) Flexible brake hose Rear tire and wheel
   
2. inspect and adjust rear wheel alignment
3. Check ABS speed sensor signal

Stabilizer Bar

Removal & Installation

1. Remove the rear wheels.
2. Remove the 2 nuts and left stabilizer bar link. If the ball joint turns together with the nut, use a hexagon wrench (5 mm) to hold the stud. Repeat for the right side.
3. Remove the 8 bolts, 2 No. 1 brackets and 2 bushings. Two types of bolts are used, so make sure the correct bolts are installed.
4. Remove the stabilizer bar.

To install:

1. Install the stabilizer bar.
2. Install the bushing and bracket with the 2 bolts and tighten to 14 ft. lbs. (19 Nm). Install the bushing to the inner side of the bushing stopper on the stabilizer bar.
3. Connect the stabilizer bar links and tighten the nuts to 29 ft. lbs. (39 Nm). Repeat for the right side.
4. Install the rear wheels.
5. Inspect and adjust rear wheel alignment.

Strut & Coil Spring

Removal & Installation

1. Before servicing the vehicle, refer to the Precautions section.
2. Remove or disconnect the following:
   CAUTION Do NOT remove the center nut to the strut at this time. The spring on the strut is under high pressure and can cause serious injury.
   
   
   No. 2 luggage compartment trim cover Left and right deck side trim box Rear luggage compartment trim cover Front luggage compartment trim cover Left and right side luggage compartment trim covers Rear wheel Rear wheel fender liner No. 2 differential support protector Rear suspension member brace Rear No. 2 lower control arm Mounting bolts and strut assembly
   
3. Secure the strut in a vise.
4. Compress the coil spring
5. Remove or disconnect the following:
   
   Upper strut retaining nut Suspension support Upper insulator Bumper Coil spring Insulator

76lb/ft on the upper and lower nuts

The front[or rear] sway bars have links in them that are rubber mounted,it sounds like one of the sway bar links is broken,or one of the sway bar bushings is missing.Find the sway bar and have a close look at the mounts to see if the problem lies here.

height sensor is a sensor that control air compressor on air shock.it keep vechicle level.if height sensor senses distance between frame and suspension .it will admit air to shock by controling the air compressor.check the air shock on driver side.BESURE TO TURN OFF ELECTRICAL POWER TO AIR SUSPENSION BEFORE RAISING VECHICLE.

maybe you got dirt in the line to the rear. Here's some background info:

The air suspension system includes the following major components:

• Air compressor to supply air to the air springs (part of front spring and shock and rear spring and shock absorber assemblies
• Front spring and shock (3C098) and rear spring and shock absorber (5A965) at each corner of the vehicle
• Four linear air suspension height sensors (5359): two rear and two front height sensors to maintain the vehicle at the proper ride height; only LH rear height sensor is used for air suspension.
• Dual-mode front spring and shock and rear shock absorber assemblies with internal actuator.

All system functions are controlled by vehicle dynamics control module (5A919). This control module receives inputs from several different sources. These inputs include:

• vehicle speed via multiplex communication network
• ignition switch position
• door position via multiplex communication network
• height sensor position
• air suspension service switch
• engine rpm via multiplex communication network
• ride and steering personality settings via multiplex communications network

Communications monitor system operation and allow diagnosis of any concerns that may develop in the system.

• System monitoring for the driver's use is provided through the instrument panel mounted message center indicator (10D898).
• Diagnosis communication for the service technician is provided through the data link connector (14489) (DLC) under the instrument panel and Rotunda New Generation Star (NGS) Tester 007-00500 or equivalent.

The message center indicator will display AIR LEVELING DISABLED or CHECK RIDE CONTROL if the suspension system is not turned on or the vehicle dynamics control module detects a concern. If air leveling system disabled is displayed, check that air suspension service switch is in the ON position.
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Weight Added When weight is added to the vehicle, the air suspension system responds as follows:

• Air suspension height sensor length is reduced from trim length, sending a "vehicle is low" signal to the vehicle dynamics control module (5A919).
• To restore vehicle to the trim position, the vehicle dynamics control module turns the compressor on by grounding the compressor relay control Circuit 420 (DB/Y). The relay is ground-side switched.
• To allow pressurized air to enter the rear spring (5560) and front spring and shock (3C098), the control module opens the solenoid valves (5311).
• Compressed air flows from the compressor, through the compressor air drier assembly, air lines and solenoid valves into the air springs.
• As the air springs raise the body height, the air suspension height sensor (5359) increases in length until the preset trim height is reached.
• The vehicle dynamics control module then turns off the compressor (through the relay) and closes the air spring solenoid valves.
• ----------------------------------------------------------------------------
• Weight Removed When weight is removed, the air suspension system responds as follows:
  
• Air suspension height sensor length is increased from the trim length, sending a "vehicle is high" signal to the control module (5A919).
• To restore the vehicle to the trim position, the vehicle dynamics control module opens the vent solenoid valve (located in the compressor assembly) and opens the solenoid valves (5311).
• Compressed air flows from air springs, through the solenoid valves, air lines, compressor air drier (5346) and out the vent solenoid valve.
• As the body lowers, the air suspension height sensor length decreases until the preset trim height is reached.
• The vehicle dynamics control module then closes the vent and solenoid valves.

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Control Module Power and Ground The vehicle dynamics control module (5A919) is located above the upper luggage compartment trim panel and lower module tray. Module power is provided by Circuit 418 (DG/Y) at Pins 36, 37, 56, 57, 58 and is powered through a Fuse 7 (30A) in power distribution box. Module ground is provided through control module wire harness Pins 6, 39, 40 and 60. The data link connector (14489) (DLC) is located in the passenger compartment under the instrument panel, 300 mm (12 inches) right of the steering column. This connector allows communications between the vehicle dynamics control module and either Rotunda New Generation Star (NGS) Tester 007-00500 or equivalent or Rotunda Service Bay Diagnostics System (SBDS)® 001-00001 or equivalent. When the CHECK RIDE CONTROL message is displayed in the message center indicator (10D898), a system error has been detected by the vehicle dynamics control module and is stored in the control module. This diagnostic trouble code (DTC) will be retained for the next 80 ignition switch cycles. If there is no repeat of the same error during these 80 ignition switch cycles, the control module will erase the DTC. Because of this self-erasing memory, a customer may have had a concern "just a few days ago" that is not retrieved from memory when Diagnostic Test Mode (DTC) "Retrieve/Clear Continuous DTCs" is executed. This must be kept in mind if you must tell customer that no current concern has been found. When the vehicle dynamics control module detects a concern, the air suspension system is disabled for the current ignition cycle. If the condition causing the concern clears up during the current ignition switch cycle, the system will not reactivate. For example, if the customer has severely overloaded the luggage compartment, the system will not be able to trim the vehicle without exceeding the compressor run time. This will generate a DTC that disables the computer controlled suspension system. If the customer then drives the vehicle and unloads the luggage compartment without turning the ignition switch OFF, the system will not adjust for the new load. The customer will experience poor ride quality and the vehicle will not adjust trim.

Torque Specifications Description Nm lb-ft lb-in Brake caliper bolt 32 24 — Brake disc shield bolt 8 — 71 Fuel tank filler pipe bracket bolt 15 11 — Fuel tank filler pipe hose clamps 3 — 27 Halfshaft nut and washer 275 203 — Lower arm inboard bolt 250 185 — Lower arm outboard bolt 275 203 — Parking brake cable bracket bolt 10 — 89 Shock absorber lower bolt 275 203 — Shock absorber rod nut 65 48 — Shock absorber upper mount nut 30 22 — Stabilizer bar bracket nut 48 35 — Stabilizer bar link nut and grommet 30 22 — Toe link cam adjuster nut 275 203 — Toe link outboard bolt 325 240 — Trailing arm bolt 300 222 — Upper arm outboard bolt 225 166 — Upper arm inboard nut 250 185 — Wheel speed sensor bolt 8 — 71 Wheel knuckle bolt 275 203 —