Exhaust Camshaft Reluctor Orientation

Some 2016-2019 Encore and Cruze models equipped with the 1.4L 4-cylinder engine (RPO LE2), 2016-2019 Malibu models equipped with the 1.5L 4-cylinder engine (RPO LFV), and 2018-2019 Equinox and Terrain models equipped with the 1.5L 4-cylinder engine (RPO LYX) may have a crank, no start or extended crank condition. Follow the diagnostics in the appropriate Service Information for an Engine Cranks But Does Not Run condition. If a cause is not found, the exhaust camshaft reluctor may be out of phase.

Remove the cam cover assembly to confirm the exhaust camshaft reluctor orientation.

During disassembly, also check the vacuum pump drive lugs (Fig. 14) for any damage. (Fig. 15)

Fig. 14

Fig. 15

To check the orientation of the exhaust camshaft reluctor, rotate the camshaft so the 2D matrix on the camshaft hex is in the 12 o’clock position. (Fig. 16)

Fig. 16

With the 2D matrix in the 12 o’clock position, the small tang on the camshaft reluctor ring should be in line with the 2D matrix. (Fig. 17)

Fig. 17

Verify the small tang is in the correct position and is in the proper relationship with the exhaust camshaft reluctor wheel. (Fig. 18)

Fig. 18

If the exhaust camshaft reluctor is out of position or the vacuum pump drive lugs are damaged, it will be necessary to replace the exhaust camshaft and the vacuum pump.

If replacing the vacuum pump, be sure to remove the broken vacuum pump drive lugs and any other metal debris during repairs.

For additional information, refer to #PIP5598.

– Thanks to Robert Halas