One problem related to software has been reported for the 2004 Chevrolet Impala. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Chevrolet Impala based on all problems reported for the 2004 Impala.
Three time in the last 30 days my 2004 Impala failed to start because of security system problem,I have been advised by mechanic ,this is a very costly repair. . It is said to be one of the modules in the system, I see many other people are having the same problem and g m does nothing. When will someone pressure them into recall on this problem.