GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2002 🢒 Sonoma Pickup - 4WD 🢒 Suspension 🢒 Suspension General Diagnosis 🢒 Ride Diagnosis - Too Hard

Step

Action

Yes

No

1

Did you review the General Description and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Suspension General Diagnosis

2

Verify that the ride is too hard.

Does the vehicle ride normally?

System OK

Go to Step 3

3

Inspect the tires for the proper inflation pressure. Refer to Tire Inflation Pressure Specifications in Maintenance and Lubrication.

Is the tire inflation pressure correct?

Go to Step 5

Go to Step 4

4

Inflate the tires to the correct pressure.

Did you complete the repair?

Go to Step 5

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5

Inspect the vehicle trim height. Refer to Trim Height Inspection . Repair as necessary.

Has the inspection/repair been performed?

Go to Step 6

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6

Inspect the following suspension components for wear or damage:

Refer to Suspension Strut and Shock Absorber Testing - On Vehicle .

    • The front coil springs
    • The torsion bars
    • The front and rear shock absorbers

Are any of the components the worn or damaged?

Go to Step 7

Go to Step 8

7

Replace all of the worn or damaged components.

    • For front coil spring replacement, refer to Front Coil Springs Replacement in Front Suspension.
    • For torsion bar replacement, refer to Torsion Bar and Support Assembly Replacement in Front Suspension.
    • For front and rear shock absorber replacement, refer to Shock Absorber Replacement in Front Suspension or Shock Absorber Replacement in Rear Suspension.

Did you complete the repair?

Go to Step 8

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8

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3