What to do about code 35and 44 on 1995 g20 Chevy van 305 engine?

Code 35 on a 1995 Chevy G20 van typically indicates an issue with the Idle Air Control (IAC) motor, while code 44 suggests a lean exhaust condition, often due to a vacuum leak or fuel delivery issue. To address these codes, start by checking the IAC for proper operation and cleaning or replacing it if necessary. Next, inspect vacuum lines for leaks, examine the fuel system (fuel pump, filter, and injectors), and ensure that the air intake system is not obstructed. After making any repairs, clear the codes and run the vehicle to see if the issues persist.