This information applies to Cobalt, Cobalt SS, HHR, HHR SS, Malibu, G5, G6, Pursuit (Canada), AURA, ION, and VUE equipped with the following engines:
- 2.4L (RPO LE5/LE9/LAT)
- 2.2L (RPO L61)
- 2.2L (RPO LAP)
- 2.2L (RPO LE8)
- 2.0L (RPO LNF)
DTCs P0016 and P0017 may be caused by a camshaft reluctor that has moved on the camshaft. The condition is more prevalent if the engine has been overheated.
Before performing this procedure, confirm that the engine timing is correct. The crankshaft, camshaft and all timing indicators must line up correctly.
The procedure below was developed for the 2006-09 2.4L LE5 engine. To determine the alignment on other Ecotec engines (L61, LAP, etc.), you must compare similar engines because the reluctor position may vary.
TIP: These procedures may not detect a small movement in the reluctor. It may be necessary to compare to another like vehicle. Also note that the cam cover gasket surface does not line up with the same face or slot on the intake and exhaust reluctor.
To Check the Exhaust Cam Reluctor Position - LE5 ONLY
With the exhaust camshaft positioned so the valves for number 4 cylinder are at maximum lift (fully opened valves), the reluctor should be flush/parallel to the rocker cover gasket surface. Compare the camshaft reluctor position to the photo. (Fig. 16)
(Fig. 16)
If the reluctor does not line up correctly, the camshaft must be replaced.
TIP: The reluctor is press fit (interference fit) and is not indexed/keyed to the camshaft. An overheat condition may contribute to the concern, causing the reluctor to spin on the camshaft when hot.
To Check the Intake Cam Reluctor Position - LE5 ONLY
With the Intake camshaft positioned so the valves for number 1 cylinder are at maximum lift (fully opened valves), the reluctor should be flush/parallel to the rocker cover gasket surface. Compare the camshaft reluctor position to the photo. (Fig. 17)
(Fig. 17)
If the reluctor does not line up correctly, the camshaft must be replaced.
TIP: The reluctor is press fit (interference fit) and is not indexed/keyed to the camshaft. An overheat condition may contribute to the concern, causing the reluctor to spin on the camshaft when hot.
- Thanks to Jeff Gorenflo
- 2.4L (RPO LE5/LE9/LAT)
- 2.2L (RPO L61)
- 2.2L (RPO LAP)
- 2.2L (RPO LE8)
- 2.0L (RPO LNF)
DTCs P0016 and P0017 may be caused by a camshaft reluctor that has moved on the camshaft. The condition is more prevalent if the engine has been overheated.
Before performing this procedure, confirm that the engine timing is correct. The crankshaft, camshaft and all timing indicators must line up correctly.
The procedure below was developed for the 2006-09 2.4L LE5 engine. To determine the alignment on other Ecotec engines (L61, LAP, etc.), you must compare similar engines because the reluctor position may vary.
TIP: These procedures may not detect a small movement in the reluctor. It may be necessary to compare to another like vehicle. Also note that the cam cover gasket surface does not line up with the same face or slot on the intake and exhaust reluctor.
To Check the Exhaust Cam Reluctor Position - LE5 ONLY
With the exhaust camshaft positioned so the valves for number 4 cylinder are at maximum lift (fully opened valves), the reluctor should be flush/parallel to the rocker cover gasket surface. Compare the camshaft reluctor position to the photo. (Fig. 16)
(Fig. 16)
If the reluctor does not line up correctly, the camshaft must be replaced.
TIP: The reluctor is press fit (interference fit) and is not indexed/keyed to the camshaft. An overheat condition may contribute to the concern, causing the reluctor to spin on the camshaft when hot.
To Check the Intake Cam Reluctor Position - LE5 ONLY
With the Intake camshaft positioned so the valves for number 1 cylinder are at maximum lift (fully opened valves), the reluctor should be flush/parallel to the rocker cover gasket surface. Compare the camshaft reluctor position to the photo. (Fig. 17)
(Fig. 17)
If the reluctor does not line up correctly, the camshaft must be replaced.
TIP: The reluctor is press fit (interference fit) and is not indexed/keyed to the camshaft. An overheat condition may contribute to the concern, causing the reluctor to spin on the camshaft when hot.
- Thanks to Jeff Gorenflo
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