Automatic Transmission Flex Plate Installation

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Automatic Transmission Flex Plate And Bolts With Tightening Sequence

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
1	Flex Plate NOTE: The flex plate does not use a locating pin for alignment and will not initially seat against the crankshaft flange, but will be pulled onto the crankshaft by the engine flex plate bolts. This procedure requires a 3 stage tightening process.
2	Flex Plate Bolt [8x] CAUTION: This vehicle is equipped with torque-to-yield or single use fasteners. Install a NEW torque-to-yield or single use fastener when installing this component. Failure to replace the torque-to-yield or single use fastener could cause damage to the vehicle or component. CAUTION: Refer to Fastener Caution . Procedure Tighten the engine flex plate bolts (1 - 8) a first pass in sequence to 15 N.m (11 lb ft). Tighten the engine flex plate bolts (1 - 8) a second pass in sequence to 30 N.m (22 lb ft). Tighten the engine flex plate bolts (1 - 8) a final pass in sequence an additional 45 degrees using EN-45059 angle meter. Use NEW bolts. Special Tools EN-45059 Angle Meter Equivalent regional tools: Special Tools .

Callout

Component Name

Flex Plate

NOTE:

The flex plate does not use a locating pin for alignment and will not initially seat against the crankshaft flange, but will be pulled onto the crankshaft by the engine flex plate bolts. This procedure requires a 3 stage tightening process.

Flex Plate Bolt [8x]

CAUTION:

This vehicle is equipped with torque-to-yield or single use fasteners. Install a NEW torque-to-yield or single use fastener when installing this component. Failure to replace the torque-to-yield or single use fastener could cause damage to the vehicle or component.

CAUTION:

Refer to Fastener Caution .

Procedure

Tighten the engine flex plate bolts (1 - 8) a first pass in sequence to 15 N.m (11 lb ft).
Tighten the engine flex plate bolts (1 - 8) a second pass in sequence to 30 N.m (22 lb ft).
Tighten the engine flex plate bolts (1 - 8) a final pass in sequence an additional 45 degrees using EN-45059 angle meter.

Use NEW bolts.
Special Tools
EN-45059 Angle Meter
Equivalent regional tools: Special Tools .