Clock parameters
The Chevrolet Impala has 2 clock parameters.
● Confirmed◆ In testing○ Supported× Not supported
Time since engine start IMPALA_RUNTMConfirmed
- Request
22 11 A1 - Service 22
DID 11A1 - Module
7E0 - Every
1 s - Testing for 1988 to 1996, 2000 to 2006, 2008 to 2010, 2012, 2015
Example reply from a 2020 Chevrolet Impala.
Bits 0 to 15 of the reply, 16 bits.
0x0032 = 50 → 50 s
- Formula
val- Range
- 0 to 65535 s
- Unit
- s
Confirmed for 2007, 2011, 2013 to 2014, 2016 to 2020. In testing for 1988 to 1995, 2000 to 2002, 2004 to 2006, 2008 to 2010, 2012, 2015. Not supported for 1996, 2003.
Time since engine start RUNTMSAE J1979Confirmed
Increments while the engine is running. Freezes if the engine stalls. Resets to zero during every control module power-up and when entering the key-on, engine off position. Limited to 65,535 seconds and will not wrap around to zero.
- Request
01 1F - Service 01
PID 1F - Module
7E0 → 7E8 - Every
1 s
Bits 0 to 15 of the reply, 16 bits.
- Formula
val- Range
- 0 to 65535 s
- Unit
- s
Confirmed for 2014. Supported for 1996, 2007, 2011, 2013, 2016 to 2020.