GMC Envoy Heater Only Works While Driving: 5 Common Causes

If your GMC Envoy’s heat only works when driving, there are five leading causes you should check.  They are low coolant, air pockets, a bad heater core, an airlocked cooling system, and a malfunctioning thermostat. We’ll start with the easy-to-check common problems and work our way to the harder-to-deal-with rarer issues that could be affecting … Read more

GMC Envoy Check Engine Light On: Why and What to Do

The check engine is the most common warning light that appears in the GMC Envoy’s instrument cluster.  Well over half of this site’s content is related to solving the various reasons why the check engine light comes on. The good news is that the check engine light indicates that there are Diagnostic Trouble Codes (DTCs) … Read more

GMC Envoy Soft Brake Pedal Causes

If your GMC Envoy has a soft brake pedal, it is a sign of a serious brake system issue. It’s usually caused by air entering the system in some way through a leak.  This article covers the six most common causes of a soft brake pedal as well as a solid diagnostic order if you … Read more

GMC Envoy Service Theft Deterrent System: Causes + Reset Procedure

Most GM vehicles built in the last 20+ years have a theft deterrent system, that includes the GMC Envoy.  Depending on the model year, your vehicle’s theft deterrent system disables the fuel pump, ignitions system, or starter if unauthorized access is detected.   When your vehicle Envoy theft deterrent system message, the system will not let … Read more

GMC Envoy Alarm Keeps Going Off: Causes + How to Fix

Your GMC Envoy’s alarm system is designed to detect potential intruders, keep its contents safe, and keep them from driving your vehicle away. However, it is not uncommon for a car alarm to go off, or keep going off, for no apparent reason– also known as false or “nuisance alarms”.  This article will discuss some … Read more

GMC Envoy Key Fob Not Working: 5 Common Causes

If your GMC Envoy’s key fob is not working, the most common reason is a dead battery. Followed by water damage or fob failure.  Below, we’ve listed everything you need to do to get your vehicle’s fob working again. A dead battery is the most common reason a GMC Envoy’s key fob fails. Table of … Read more

GMC Envoy Bad Fuel Mileage: Causes

If you’re filling your vehicle up regularly and still getting crummy mileage, there are a few things that could be to blame. In this post, we’ll explore some of the most common reasons your GMC Envoy is getting bad gas mileage. Before diving in, it’s important to note whether or not your Envoy’s check engine … Read more