GM Service Manual Online
For 1990-2009 cars only

Object Number: 37221  Size: SH

The Borg Warner T5 model is a 5-speed 77 mm manual transmission assembly.

The Borg Warner T5 model is the only manual transmission assembly for the 3.8 L (RPO L36) engine.

Identify the manual transmission assembly as follows:

    • Calculate the forward gears
    • Measure the distance between the centerline of the output shaft and the counter gear

Notice: Use only DEXRON®-III Automatic Transmission Lubricant for this manual transmission assembly. Other lubricants or additives may damage the blocker ring friction material or the adhesives.

The Borg Warner model T5 5-speed manual transmission assembly has the following features:

    • Fully synchronized
    • Blocker ring synchronizers
    • Sliding mesh reverse gear
    • Three-piece synchronizer rings for first speed and second speed gears consisting of steel inner and outer cones and a tapered metal ring that is lined on both sides with friction material similar to automatic transmission friction plates
    • Independent and separately replaced synchronizer cones
    • 3RD speed and 4TH speed gear blocker rings that are conventional in appearance and are lined with friction material
    • A brass 5TH speed gear blocker ring
    • Tapered roller bearings that support the mainshaft and the countershaft (Must be shimmed for proper end play)
    • Caged roller bearings for 1ST speed through 4TH speed gears
    • A aluminum transmission case

The manual transmission control is mounted on top of the extension housing.

The manual transmission control cannot be adjusted.

The manual transmission control must be serviced independently of the manual transmission.


Object Number: 37221  Size: SH

The Tremec T5 model is a 5-speed 77 mm (3 in) manual transmission assembly.

Identify the manual transmission assembly as follows:

    • Calculate the forward gears
    • Measure the distance between the centerline of the output shaft and the counter gear

Notice: Use only DEXRON®-III Automatic Transmission Lubricant for this manual transmission assembly. Other lubricants or additives may damage the blocker ring friction material or the adhesives.

The Tremec model T5 5-speed manual transmission assembly has the following features:

    • Fully synchronized
    • Blocker ring synchronizers
    • Sliding mesh reverse gear
    • Three-piece synchronizer rings for first speed and second speed gears consisting of steel inner and outer cones and a tapered metal ring that is lined on both sides with friction material similar to automatic transmission friction plates
    • Independent and separately replaced synchronizer cones
    • 3rd speed and 4th speed gear blocker rings that are conventional in appearance and are lined with friction material
    • A brass 5th speed gear blocker ring
    • Tapered roller bearings that support the mainshaft and the countershaft
        The roller bearings must be shimmed for proper end play.
    • Caged roller bearings for 1st speed through 4th speed gears
    • An aluminum transmission case

The manual transmission control assembly is mounted on top of the extension housing.

The manual transmission control assembly cannot be adjusted.

The manual transmission control assembly must be serviced independently of the manual transmission assembly.