Has anyone had any luck with sending custom messages to the NAV in the DIC? I don't use the Nav anymore since it is old and now the telematics unit is dead, so I want to repurpose that section of the DIC and put some custom information from the car's performance. Due to the forum's excellent work I have all the PID's I need for the performance I want to measure but there isn't much documentation on the actual frames to send on the GMLAN. I sniffed the high and low speed. It looks like most of the DIC updates happen through the low speed side. I can see where the street is getting set:
Does anyone have any notes or done this before? It is very slow going picking through the frame by frame. Thank you!
| Header | LEN | D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | ASCIIText | Notes |
| 10B24080 | 8 | 10 | 10 | 02 | 01 | 16 | 02 | 00 | 34 | _______4 | Header send |
| 10B24080 | 8 | 21 | 38 | 54 | 48 | 20 | 41 | 56 | 45 | !8TH_AVE | Additional data |
| 10B24080 | 8 | 22 | 20 | 53 | 45 | 00 | 00 | 00 | 00 | "SE___ | Additional data |
| 10B24080 | 8 | 10 | 10 | 02 | 01 | 16 | 02 | 00 | 34 | _______4 | |
| 10B24080 | 8 | 21 | 38 | 54 | 48 | 20 | 41 | 56 | 45 | !8TH_AVE | |
| 10B24080 | 8 | 22 | 20 | 53 | 45 | 00 | 00 | 00 | 00 | "SE___ |
Does anyone have any notes or done this before? It is very slow going picking through the frame by frame. Thank you!
