The P0740 code on a 1997 Chevy Lumina indicates a problem with the torque converter clutch (TCC) system. To repair it, start by checking the Transmission Fluid level and condition, as low or dirty fluid can cause issues. Next, inspect the TCC solenoid, wiring, and connectors for damage or corrosion. If these components are functioning properly, you may need to consider a more in-depth diagnosis or potential replacement of the torque converter itself.
Torque converter clutch enable solenoid circuit. Code PO740
Im going to assume the code you have given is PO740 on the obd2 scan tool? PO740 is a TCC circuit malfunction
I have Lumina car and protested that the battery replaced.Now the radio wants code please help.model.92075550serial no 334000493.5.sameer_alal@yahoo.com
Trouble code P0756 means:Shift solenoid B performance or stuck off
Low catalytic converter efficiency.
Trouble code P0410 means:Secondary air injection system malfunction
Trouble code P0304 means:Cylinder 4 misfire detected
The radio unlock code for a Chevy Lumina is typically found in the owner's manual or on a card that came with the vehicle. If you don't have that information, you can obtain the code by contacting a Chevrolet dealership with your vehicle's VIN and proof of ownership. Alternatively, some online services may assist in retrieving the code based on the radio's serial number.
AnswerI am not finding a code PO740 in my bookFailed torque converter lock up clutch.
middle of the engine on the right side. should have code on top of it
Trouble code P0412 means:Secondary air injection system switching valve A circuit malfunction
The 95-01 Lumina's have a 17gallon tank My Haynes manual says that a Lumina with a 3.1 engine has a 16.1 gallon tank. Haynes issue # 24048 -------------------- These fuel tank capacities for the 3.1L and 3.8L engines come directly from my 1999 Chevrolet Lumina Owner's Manual: 3100 (Code M) V6 . . . . . . . . . . . 16.6 gallons (62.8 L) 3800 (Code K) V6 . . . . . . . . . . . 16.6 gallons (62.8 L)