Guthrie's Auto Service Inc.
144 COUNTY ROAD 1435 CULLMAN, AL 35058 256.739.1690

General / Misc

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Cold Facts about Heaters

Brrrr.  It's cold outside.  And if your vehicle's heater isn't working, then it's cold inside too.  No fun – and potentially dangerous: heat is needed to defrost your windshield.&...
Published on: Mar 22, 2026

Deciphering the Menu Board: A to Z

You may not be familiar with all of the items on your Cullman auto service center's menu board so here is a quick description of some of the typical services that might be listed. Remember, the board ...
Published on: Mar 15, 2026

Don't Blow a Gasket! (Valve Cover Gasket Replacement)

When you head out to your vehicle after it's been parked and notice oil leaking underneath it, that's something to have looked at right away.  Oil leaks mean your oil level is probably low, and r...
Published on: Dec 14, 2025

Tips on TPS (The Throttle Position Sensor)

When you step on the accelerator, you expect your vehicle to speed up, not slow down.  But, what if it doesn’t?  That can be a big problem. The answer may be a problem with the sensor...
Published on: Aug 17, 2025

Getting Off to a Running Start (Starter Replacement)

When you start your vehicle’s engine, there’s another motor that makes that whole process possible.  It’s called the starter, and it’s a small electric motor that gets you...
Published on: Aug 10, 2025

The Foggiest Idea (Fogged Windows in Cold Weather)

In cold weather, you may notice your windows fogging up. Then you can't see where you're going, and suddenly you and those around you are in danger. So, what causes your windows to fog up in cold weat...
Published on: Jun 08, 2025

The 20.9 Percent Factor (Oxygen Sensor)

Do you know what gas makes up 20.9% of the air we breathe? It's oxygen.   Oxygen is an important part of the combustion process that enables your engine to make power.  The amount of ox...
Published on: Dec 15, 2024

Steamed Up (Vapor Coming Out of Vents)

Sometimes you may notice a little steam or vapor coming out of your vehicle's vents when running the air conditioning or heater.  Is this something about which you need to worry? The answer is i...
Published on: Dec 03, 2023