Questions & Answers for: 2004 gmc envoy power drain

...2004 GMC Envoy SLT has 7,500 miles and due to the fact that I've been working overseas for the past 5 years, it's been sitting in storage, with frequent start-ups and is driven every couple of weeks. ...

Radiator fan spinning hard draining power, truck feels heavy The fan clutch is the most likely cause. When the clutch is replaced the ecm program should be updated also.

...drain on a battery, an in-line digital ammeter must be used. Use of a test lamp or voltmeter is not an accurate method due to the number of electronic modules.When the battery has been disconnected ...

...Envoy that will draw some small amount of power even when the truck is off, so be aware that there can be somewhere around 100 to 150 mA of current draw normally. Check some obvious things like the ...