Special Tools

WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

EN-8087: Cylinder Bore Checking Gauge
J 45059: Angle Meter

For equivalent regional tools, refer to Special Tools .

Fig 1: View of EN-8087 Gage To Measure Bearing Bore

Courtesy of GENERAL MOTORS CORP.

NOTE: If crankshaft bearing failure is due to other than normal wear, investigate the cause. Inspect the crankshaft or connecting rod bearing bores.

Inspect the connecting rod bearing bores or crankshaft main bearing bores using the following procedure:

Tighten the bedplate to specification using the J 45059: meter.
Measure the bearing bore for taper and out-of-round using the EN-8087: gauge (1).
No taper or out-of-round should exist.