Code 43 = Electeroic Spark Timing (EST) circuit low voltage detected
OR
ESC circuit problems.
Without being there to put a meter on different components and check it out, all I can do is point you to the electronic spark control module.
More information is needed.
Code P0301 indicates a misfire in cylinder 1 of your Chevy truck. To fix this issue, first, inspect and replace the spark plug and ignition coil for that cylinder, as these are common culprits. Additionally, check for any vacuum leaks, fuel delivery issues, or compression problems in that cylinder. If the problem persists after these steps, consider running a diagnostic to rule out more complex issues.
I have a brake fluid leak on a Chevy truck silveraldo
Buy a new truck.
Replace it.
By removing it and replacing it with a bran new one.
Probably needs lubrication and the control cable adjusted
You will have to replace it. The bearings are worn out in the blower motor.
change your o2 sensor
replace cat
Start with replacing the thermostat.
I've got a better question, why is this question in the Chevy venture forum ?