ricklovin93

Cant find a pinout for the ebcm connector. The car is finally home so i can get to work on it..

ricklovin93

Came back to life lol. After checking the resistance of the gmlan wires for every module, I went back to the dlc and checked the gmlan pins again, amazingly they had 60 ohms like they should. Threw the battery in and it started right up. I still dont think its fixed though. The instrument panel has a code that wont go away. U2129 "lost communication with remote function actuation" security light is on again. Could the fact that I dont have the keyless entry remote be causing the security system to act up, and cause the no start?
Everytime the instrument panel tweaks out its immediately after the security light comes on.

SR Tech

iTrader: (2)

Keyless entry shouldn't have any effect on anything. Mines not on my keychain anymore. It's definitely not fixed, it's intermittent which makes it shitty to diagnose. I'm not sure if that model year has it's own security module or if it's part of the BCM but that's a good starting point when it acts up again. But you need to jump the wires to complete the circuit.

I know it it's tough because CAN lines are very sensitive and you can fry a module very easy but it's the necessary step in the diagnosis.

ricklovin93

over a week with no issues now. The only problem i have is when I plug my scanner in the gauges will reset and the security light pops on while the scanner is connecting to the system (security light goes away as soon as the scanner is disconnected)
One thing i did do was strap the pcm down tight with some zip ties. Theres nothing really holding it down, so it was moving around a bit.
I also cleaned all the connectors at all the modules that communicate via GMLAN