1992 GMC Value Van 5.7 K, AutomaticFACTORY OEM SERVICE PROCEDURE

THM 3T40 Application

THM 3T40 APPLICATION

Application (Body Code) Engine
Buick
Century (A) 2.5L & 3.3L
Skylark (N) 2.3L, (1) 2.5L & 3.3L
Chevrolet
Beretta (L) 2.2L, 2.3L & 3.1L
Cavalier (J) 2.2L & 3.1L
Corsica (L) 2.2L, 2.3L & 3.1L
Lumina (W) 2.5L & 3.1L
Lumina APV 3.1L
Oldsmobile
Achieva (N) (2) 2.3L & 3.3L
Cutlass Calais (N) (1) 2.3L, 2.5L & 3.3L
Cutlass Ciera (A) & Cutlass Cruiser (A) 2.5L & 3.3L
Cutlass Supreme (W) (1) 2.3L & (2) 3.1L
Silhouette 3.1L
Pontiac
Grand Am (N) 2.3L, (1) 2.5L & (2) 3.3L
Grand Prix (W) (1) 2.3L & (2) 3.1L
LeMans (T) 1.6 & 2.0L
Sunbird (J) 2.0L & 3.1L
Trans Sport 3.1L
6000 (A) (1) 2.5L & 3.1L
(1) Applies to 1991 models.
(2) Applies to 1992 models.
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.

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