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.

1990 Pontiac LeMans BaseFACTORY OEM SERVICE PROCEDURE

1990 Model Identification

1990 GENERAL SPECIFICATIONS & VIN IDENTIFICATION

Application

Specification

Coupe

Body Code

Engine Type ⁽¹⁾

1.6L

Engine ID

Fuel System

TBI

Ignition System

⁽²⁾ Magnetic

Body Code

Engine Type ⁽¹⁾

1.6L

Engine ID

Fuel System

TBI

Ignition System

⁽²⁾ Magnetic

GSE

Body Code

Engine Type ⁽¹⁾

2.0L

Engine ID

Fuel System

TBI

Ignition System

⁽²⁾ Magnetic

⁽¹⁾	Engine may identified by eighth digit of VIN or by serial number, located on bellhousing mounting flange on exhaust side of engine.

⁽²⁾	Timing is controlled by Electronic Control Module (ECM).

Factory Service Tools

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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.