Chevy Avalanche P0440: Meaning, Causes, How to Fix

The P0440 code is a common trouble code that many Chevy Avalanche owners may encounter. It indicates that there is an issue with the truck’s Evaporative Emission Control (EVAP) system. Specifically, the EVAP system is malfunctioning. A variety of causes can trigger the P0440 code, with the most common one being a loose or damaged … Read more

Chevy Avalanche P0455: Meaning, Causes, + How to Fix

P0455 in the Chevy Avalanche is a trouble code that indicates your truck has a LARGE evaporative emissions leak. With this code, you shouldn’t notice any symptoms besides perhaps a noticeable fuel smell. P0455 usually is not an immediate threat to the driveability of your Avalanche. But, whenever the check engine light is on, it’s … Read more

Chevy Avalanche P0446: Meaning, Causes, How to Fix

A prevalent issue with the Chevy Avalanche is the P0446 code. This code corresponds to a specific number obtained when connecting your Avalanche to an OBDII scanner. A faulty vent control valve most commonly causes P0446. Definition P0446: EVAP System – Vent Control Circuit – Malfunction Symptoms Usually none Common Causes Bad EVAP Vent Control … Read more

P0496 Chevy Avalanche

One of the most common trouble codes with the Chevy Avalanche is the P0496 code. This code number references a number that is given to you when you plug your Avalanche into an OBDII scanner. Related:  P0420 Chevy Avalanche   Chevy Avalanche P0496 Symptoms P0496 code in the Chevy Avalanche will often be accompanied by … Read more

Chevy Avalanche P0420: Meaning, Causes, + How to Fix

This page is meant to help you troubleshoot the Chevy Avalanche P0420 trouble code. It covers the P0420 code’s meaning, symptoms, causes, and possible solutions. P0420 is the most common OBDII code and is virtually never a breakdown risk. A failing oxygen sensor or bad catalytic converter are the most common causes of P0420. Table … Read more

Chevy Avalanche P0171 and P0174 Code Diagnosis

P0171 and P0174 both indicate that there is a lean condition present in your Chevy Avalanche.  By themselves, these are some of the most common OBD2 codes.   When they are together, it indicates that the entire engine is running lean. Definition Both of these codes are generic, which means they have the same meaning … Read more

Chevy Avalanche P0700 Code: Meaning, Causes, + How to Fix

A trouble code is a signal that is generated by an automatic transmission system whenever it detects an issue in the Chevy Avalanche that requires your attention. The P0700 code is a general code that is typically accompanied by another code that specifies the specific problem. This code is part of the OBDII system and … Read more

Chevy Avalanche P0442 Engine Code: Causes + How to Fix

One of the most common issues that happens with the Chevy Avalanche is the P0442 trouble code. This code appears when connecting the vehicle to an OBDII scanner and pertains to the emissions system.  While it’s unlikely to cause a breakdown, it can be bothersome and may result in a failed emissions test for your … Read more