Hummer H2. Manual — part 36

loose

Steering gear box (rack) mounting
loose

See STEERING section

Steering gear adjustment loose

See STEERING section

Worn spherical joints

See SUSPENSION section

Toe-In Not Adjustable

Lower control arm bent

See SUSPENSION section

Frame bent

Check frame for damage

Camber Not Adjustable

Control arm bent

See SUSPENSION section

Frame bent

Check frame for damage

Hub & bearing not seated
properly

See SUSPENSION section

1998 Chevrolet Pickup C1500

GENERAL INFORMATION Trouble Shooting - Basic Procedures

GENERAL INFORMATION

Anti-Lock Brake Safety Precautions

* PLEASE READ THIS FIRST *

This article is intended for general information purposes only. This information may not apply to all makes and
models. If vehicle is equipped with Anti-Lock Brake System (ABS), refer to appropriate ANTI-LOCK BRAKE
SYSTEM article in the BRAKES section for description, operation, depressurizing, testing, system bleeding,
trouble shooting and servicing of specific system.

ANTI-LOCK BRAKE SAFETY PRECAUTIONS

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NEVER open a bleeder valve or loosen a hydraulic line while ABS is pressurized.

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NEVER disconnect or reconnect any electrical connectors while ignition is on. Damage to ABS control
unit may result.

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DO NOT attempt to bleed hyudarulic system without first referring to the appropriate ANTI-LOCK
BRAKE SYSTEM article in the BRAKES section.

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Only use specially designed brake hoses/lines on ABS equipped vehicles.

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DO NOT tap on speed sensor components (sensor, sensor rings). Sensor rings must be pressed into hubs,
NOT hammered into hubs. Striking these components can cause demagnetization or a loss of
polarization, affecting the accuracy of the speed signal returning to the ABS control unit.

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DO NOT mix tire sizes. Increasing the width, as long as tires remain close to the original diameter, is
acceptable. Rolling diameter must be identical for all 4 tires. Some manufacturers recommend tires of the
same brand, style and type. Failure to follow this precaution may cause inaccurate wheel speed readings.

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DO NOT contaminate speed sensor components with grease. Only use recommended coating, when
system calls for an anti-corrosion coating.

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When speed sensor components have been removed, ALWAYS check sensor-to-ring air gaps when
applicable. These specifications can be found in each appropriate article.

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ONLY use rocommended brake fluids. DO NOT use silicone brake fluids in an ABS equipped vehicle.

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When instlling transmittion devices (CB's, telephones, etc.) on ABS equipped vehicles, DO NOT locate
the antenna near the ABS control unit (or any control unit).

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Disconnect all on-board computers, when using electric welding equipment.

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DO NOT expose the ABS control unit to prolonged periods of high heat (185 °F/85°C for 2 hours is
generally considered a maximum limit).

WARNING:

Failure to depressurize ABS could lead to physical injury.

1998 Chevrolet Pickup C1500

GENERAL INFORMATION Anti-Lock Brake Safety Precautions

1998 Chevrolet Pickup C1500

GENERAL INFORMATION Anti-Lock Brake Safety Precautions

GENERAL INFORMATION

Symptom Check List Worksheets

PURPOSE

WHY USE THE SYMPTOM CHECK LIST WORKSHEETS?

One of the most difficult and critical lines of communication is between the service customer and the
technician. The clearer the technician understands the customer's concerns, the more likely the problem will be
"fixed right the first time".

The Symptom Check List Worksheets in this article are designed to improve this communication. When used
consistently, they can be helpful in reducing shop comebacks, increasing technician productivity, and producing
satisfied customers. They also provide other benefits:

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Reduce "No Trouble Found" problems

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Increase customer involvement

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Customer perceive that "they really care and listen"

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Save time during peak write-up periods

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Reduce recontacting customers for additional information

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Improve night drop information

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Insure all the right questions are asked at write-up

MAKING THE WORKSHEETS A PART OF YOUR NORMAL ROUTINE

The following information contains ideas that may be helpful in forming habits that promote daily use of the
Symptom Check Lists:

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HAVE THE SERVICE ADVISER FILL OUT THE FORM(S) WITH THE CUSTOMER WHENEVER
POSSIBLE.

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Place them in your night drop for the customer to fill out, along with an instruction sheet to help them
understand what to do.

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Hand out the worksheets to customers while they wait in line during the peak morning rush and ask them
to fill it out. It will save time for all concerned and improve the quality of information received from the
customer.

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Make sure it is attached to the hard copy when it goes to the technician.

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Place a copy with the final repair papers and review it with the customer at delivery.

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Put a new worksheet in the glovebox of all departing customers.

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Require that you personally see a copy of all worksheets filled out for shop comebacks.

NOTE:

This article is intended for general information purposes only. It does not apply
specifically to one make or model.

1998 Chevrolet Pickup C1500

GENERAL INFORMATION Symptom Check List Worksheets

1998 Chevrolet Pickup C1500

GENERAL INFORMATION Symptom Check List Worksheets

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Hold a shop meeting to get employee buy-in and their ideas on how to make it effective in your shop.

There are many other ways to utilize the concept, but as with every other idea, successful implementation
depends on employee involvement and buy-in.

SYMPTOM CHECK LIST WORKSHEETS

CONDENSED VERSION - ALL ON ONE PAGE

NOTE:

Have the service adviser fill out this form with the customer whenever possible.

1998 Chevrolet Pickup C1500

GENERAL INFORMATION Symptom Check List Worksheets