1990 Geo Tracker Base, AutomaticFACTORY OEM SERVICE PROCEDURE

Engine/VIN Id: Application

1990 MODEL COVERAGE

MODEL BODY CODE ENGINE (1) ENGINE ID FUEL SYSTEM IGNITION SYSTEM
Metro M 1.0L SOHC 6 TBI Magnetic (2)
Prizm S 1.6L DOHC (3) 6 PFI Magnetic (4)
Prizm GSi S 1.6L DOHC (5) 5 PFI Magnetic (4)
Storm R 1.6L SOHC 6 PFI Magnetic (4)
Storm GSi R 1.6L SOHC (6) 5 PFI Magnetic (4)
Tracker J 1.6L SOHC U TBI Magnetic (7)
(1) Engine may be identified by eighth digit of VIN, or by serial number located on front left side of cylinder block.
(2) Metro LSi models use a conventional vacuum/centrifugal spark control system. All other Metro models use a spark control system monitored by the computer.
(3) 4A-FE engine.
(4) Computer controlled system.
(5) 4A-GE High Output (HO) engine.
(6) High Output (HO) engine.
(7) Non-computer controlled ignition system with a vacuum advance distributor.
Fig 1: VIN Identification
G121804
MODEL YEAR VIN CODE APPLICATION

VIN Code Model Year
J 1988
K 1989
L 1990
Fig 2: Engine Code Location
G121559
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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.