Battery Drain Chevrolet Impala

Finding The Cause Of Battery Drain In A Chevrolet Impala

Finding the cause of battery drain can be tricky, but sometimes your ears will help you find the culprit.

Finding the cause of battery drain can be tricky, but sometimes your ears will help you find the culprit. A Mitchell 1 SureTrack community member had a Chevrolet Impala in their shop because the owner complained that the battery kept going dead. The charging system checked out, but while working on the vehicle they heard some clicking sounds under the dash. The following Real Fix summarizes the interaction between members of the community that led to the solution.


2007 Chevrolet Impala LT 3.5L


Customer states that battery goes dead while vehicle is sitting.

Diagnostic Steps Performed/Parts Replaced

Performed charging system test and all is normal. Shortly after the test, while looking for loose wiring, a clicking noise was found and appeared to be moving throughout the dash in a cycle. The temperature control doors were clicking, attempting to move, but were in fact stuck to one extreme. Scanned the HVAC system and retrieved three codes.

• B0223: Recirculate Position Command Circuit Actuator Stuck

• B0408: Left Air Mix Control Circuit Malfunction Actuator Stuck

• B0418: Temperature Control 2 Circuit Actuator Stuck

Best Answers from Community

Try commanding the motors with the scan tool to see if they operate. When they reach the end of their travel, the module sees the increase in amperage and turns them off. With the plastic worm gear worn off, there is not enough load to raise the amperage so they continue to run. You can replace just the one that is ticking, then reevaluate. It’s not abnormal for them to set a code and still work fine.


Cannot command the motors ­­— replaced two of the motors and still cannot command them. Internal failure of the controller causing motors to run with key removed, draining the battery.


Replaced HVAC control module and three bad mode door actuators. No more clicking noise and battery not draining with key off.

Courtesy of Mitchell 1 ProDemand SureTrack.

You May Also Like

The September Digital Edition Is Now Available To Download, Read

ShopOwner includes technical and management content and is free to download and read.

The interactive and easy-to-use digital edition of ShopOwner’s September issue, featuring articles from Underhood Service, is available now.

Click Here to read the September issue

In addition to management topics and opinion pieces, this issue includes articles on articles on the cooling system leak detection with smart thermostats; Kia and Hyundai hybrid service opportunities; BMW spark plug removal and installation techniques; and more.

Understanding Stop/Start Charging and Starting Systems

The problem may not have been caused by a complicated reason, something simple may have caused the system not to work.

Remanufacturing And The EV-Battery Challenge

One researcher is particularly interested in the fate of EV batteries once they reach the end of their automotive lifecycle.

How Ignition Coils And Plugs Find The Path Of Least Resistance

No matter if it is the secondary or primary side of the coil, inspecting the grounds should be one of the first tests.

Ford Adaptive Cruise Control Alignment Process

Follow these steps for proper horizontal alignment of the cruise control module radar sensor.

Other Posts

How Speed, Load and Slip Affect Voltages

Modern, computer-controlled charging systems found on today’s vehicles need proper test procedures – no guesswork allowed.

Power Window Regulator and Motor Service

Power windows are great as long as they roll up and down when commanded to do so.

GM Stop/Start Vehicles

It is essential to understand what is different on these vehicles and how it might change your diagnostic approach.

Milwaukee Introduces New M18 PACKOUT Six Bay Rapid Charger

The new portable charging solution means less downtime with full system compatibility.