Code 39 alone indicates a problem at

1992 Chevrolet Cavalier RS, 2D Convertible, 3.1 T, StandardSECTION Code 39 alone indicates a problem at
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 1992 Pontiac Grand Am, 1992 Oldsmobile Cutlass Cruiser, 1992 Oldsmobile Cutlass Ciera, 1992 Oldsmobile Achieva, and 1992 Buick Skylark. However, it is still accessible from the selected car via links, so may be relevant.
  • Brake input circuit between splice and TCC solenoid.
  • TCC drive circuit between TCC solenoid and ECM.
  • Poor connection to ECM or ECM itself.
Fig 1: Code 39, "A" Body, Using Tech 1, W/4T60 Transaxle, TCC Ckt, Schematic
G91J07435
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.