For 1990-2009 cars

# REVISED LABOR OPERATIONS FOR DRIVEABILITY DIAGNOSIS

#### MODELS AFFECTED: 1983-1988 - ALL VEHICLES EQUIPPED WITH COMPUTER COMMAND CONTROL, ELECTRONIC FUEL INJECTION (THROTTLE BODY INJECTION AND PORT FUEL INJECTION)

#### NOTICE: This bulletin supersedes bulletins 87-6E-7, 84-6E-24, and 83-23 for the following reasons:

Addition of 1988 models, New Service Procedures, and labor time changes. Please discard bulletins 87-6E-7, 84-6E-24, and 83-23.

The following labor operations and times are for 1983-1988 and should be used when performing ALDL Scanner diagnosis checks described in the 1983-86 Driveability Diagnosis Procedure Manual. The operation numbers are listed below:

Operation Number Description Time ---------------- ----------- ---- T5056 ALCL Procedure 0.2 All Carbureted Engines

T5079 ALCL Procedure 0.2 All Fuel Injection Engines

T4085 Cleaning Injectors 0.5

The following information describes what is and is not included in each operation number:

#### T5056 INCLUDES

1. Observing the scanner and COMPLETING the worksheet.

#### T5056 DOES NOT INCLUDE

1. Electrical and/or connector repairs. 2. Component replacement. 3. Diagnostic circuit check. 4. System performance check. 5. Internal carburetor adjustment. 6. CLEANING 02 sensor, if necessary.

#### T5079 INCLUDES

1. Observing the scanner and COMPLETING the worksheet.

#### T5079 DOES NOT INCLUDE

1. Electrical and/or connector repairs. 2. Component replacement. 3. SETTING minimum air rate, if necessary. 4. SETTING TPS, if necessary..

Refer to the appropriate labor time guide for repair operation numbers not included in the above-listed labor operations.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.