Car is not shifting into high gear while driving. It stays in second. Possible cause?
Chevrolet Q&AAsk Your Question
2006 Chevrolet HHR Question: transmission
Answer #1Superbob October 16, 2010, 11:50Master
You could have a transmission problem or possibly maybe just the in the shifter system. Is the Malfunction Indicator Light (MIL) on? If so, there's data and trouble codes stored in the controller and would help for diagnostic purposes. A mechanic with a scanner could read the codes and data.
Here's a directory link for you: