When you start your Chevy Avalanche, the OBD-II system runs a self diagnostic check on all major systems. If any of these checks fail, you will see a diagnostic warning light on the dash for the corresponding system. When the SRS system fails this check, you’ll see the SRS light. SRS stands for supplemental … Read more
P1682 is a diagnostic trouble code that indicates that your Chevy Avalanche’s ignition switch is having a voltage problem. It is typically caused by a faulty ignition switch, although there can be other causes as well. There are two “circuits” to the ignition switch. The first one goes to the ECM through the throttle … Read more
The Chevy Avalanche is susceptible to radiator leaks, which can cause the engine to overheat and result in costly engine damage if not taken care of quickly. Without prompt attention, a leaking radiator can lead to more serious long-term damage like a faulty head gasket or a cracked head. Identifying the symptoms of a radiator … Read more
One of the most common problems that can happen to a vehicle is a heater core leak. If your Chevy Avalanche has a leaking heater core, it is not a breakdown risk. Although, it is necessary to make sure that the lost coolant is replaced. It can cause damage to the vehicle in other ways, … Read more
One of the most common problems that can occur in the life of a vehicle is a bad starter, that includes the Chevy Avalanche. It is important to determine whether or not it’s a bad starter that is keeping the vehicle from turning over. If your Avalanche is not starting, don’t assume right away … Read more
P0720 is a generic OBD II trouble code, which means that it has the same meaning for your Chevy Avalanche as it would any other vehicle. It indicates that your Avalanche’s OSS (Output Shaft Speed Sensor) is reporting a malfunction. It’s typically caused by a bad OSS, or a wiring problem. The OSS works by … Read more
P0520 is a common OBD2 trouble code. It’s generic, which means that it has the same meaning for the Chevy Avalanche as it would any other vehicle. P0520 indicates that the oil pressure sensor is operating outside of its normal “range”. It is typically caused by a bad oil pressure sensor switch or a … Read more
P0108 is a generic OBD-II trouble code. It indicates your Chevy Avalanche’s MAP (manifold absolute pressure) sensor’s voltage reading is outside of the normal operating range. The voltage is too high. It’s most commonly caused by a bad MAP sensor, wiring issue, or vacuum leak. The MAP sensor measures the air pressure coming into … Read more
P0443 is a very common OBD2 code. It’s generic, meaning it has the same definition for the Chevy Avalanche as any other vehicle. If your Avalanche has this code, it indicates the EVAP purge control valve circuit is malfunctioning. This is typically caused by a short in the wiring to or from the purge … Read more
P0521 is an OBD2 diagnostic code that is triggered when your Chevy Avalanche detects that the value being sent from the oil pressure sensor is out of its normal operating range. It is typically caused by a bad oil pressure sensor or an issue with the oil system, and should be diagnosed and fixed right … Read more