Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Inspection/Maintenance Labor Operations (58-05-04A)
Reference number: 58-05-04A
Supersedes refnos: 01-00-89-007
Inspection/Maintenance Labor Operations
TECHNICAL SERVICE BULLETIN
| Affected Model(s): | All 1989-95 Passenger Cars and Trucks |
| Supercedes: | This bulletin is being revised to include GM of Canada. Please discard Corporate Bulletin Number 58-05-04A (Section 05 - Warranty Administration). |
SERVICE INFORMATION
The purpose of this bulletin is to advise retail and wholesale service personnel of labor operations and times that have been established for States/Provinces which have mandated an emissions inspection/maintenance program test.
These times were developed using procedures detailed in the Inspection/Maintenance (I/M) Emissions Diagnostic Manual, publication GM/95-IM240-2. These operations appear in current Labor Time Guides.
| Labor Operation | Description | Labor Time |
|---|---|---|
| J9980 | I/M Excessive Emissions Diagnosis | 0.5 hr |
| Add | To Bring Cold Engine To 85°C | 0.1 hr |
| Add | For Manual Oxygen Sensor Test W/Scan Tool Snapshot | 0.1 hr |
| Add | W/Dual Converters | 0.2 hr |
| Add | To Remove Engine Cover - Vans Only | 0.4 hr |
| J9981 | Evap Purge Flow Test | 0.3 hr |
| J9982 | Evap System Pressure Test | 0.4 hr |
| Add | W/Dual Fuel Tanks | 0.3 hr |
NO RELATED
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.