GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2002 🢒 Montana 🢒 Suspension 🢒 Automatic Level Control 🢒 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 following suspension components for wear or damage:

    • Springs
    • Struts
    • Shock Absorbers

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

Are any of the components the worn or damaged?

Go to Step 6

Go to Step 7

6

Replace all of the worn or damaged components.

    • For any strut component replacement, refer to Strut, Strut Component, and Spring Replacement in Front Suspension.
    • For shock absorber replacement, refer to Shock Absorber Replacement in Rear Suspension.
    • For spring replacement, refer to Coil Spring Replacement in Rear Suspension.

Did you complete the repair?

Go to Step 7

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7
  1. Inspect the automatic level control system. Refer to Diagnostic Starting Point - Automatic Level Control in Automatic Level Control.
  2. Repair as necessary.

Did you complete the inspection/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