Some 2012-2014 Cruze models equipped with the 1.8L engine (RPO LUW, LWE) and a manual transmission may have a knock sound at the front of the vehicle when starting the engine. The sound may be due to the starter (Fig. 10) not having a high enough cranking speed.
Fig. 10
If the sound is heard during start-up, begin diagnosis by checking the battery state of health. Correct the battery charge as needed if it is low. Also perform a voltage drop test on the positive and negative battery cables. Repair any cable conditions if necessary.
If the source of the low-cranking speed of the starter is not identified, replace the starter and the fuse block. The fuse block is located under the battery fuse box cover. (Fig. 11, #2) Refer to Starter Replacement (1.8L LUW and LWE) and Fuse Block Replacement in the appropriate Service Information.
Fig. 11
Starter and Fuse Block
The fuse block and starter must be matched in service. If either part is being serviced, verify proper matched usage.
- Part numbers 55572439 (Starter) and 95937484 (Fuse Block) must be matched.
- Part numbers 55576980 (Starter) and 95476466, 96982033 or 95942232 (Fuse Block) must be matched.
If the knock sound is still present once the starter and block fuse have been replaced, the flywheel should be replaced. Choose the correct size flywheel based on the Electronic Parts Catalog (EPC) notes in accordance with the VIN.
Refer to Bulletin #23-NA-114 for more information, including part numbers.
– Thanks to Mark Kevnick
