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Shop Press

Shop Press is the news and idea hub for everything related to working on cars and trucks, focusing on repair, technology, and wrenching lifestyle.

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Service Writers: Don’t Leave Your Greatest Diag Tool in the Shop

Today’s piece starts with a one-question quiz that’s not a trick question: in your shop, what is your best diagnostic tool? It’s not a meter or a scan tool or a stethoscope, though those all are handy items to have nearby. It’s your technician. And as much as leaving...

Why Your Shop Should Be Using Loaded Knuckles to Save Time and Money

It’s midday on a Friday, and an older-model Subaru rolls into the bay in need of new wheel bearings. In the past, this would have meant a few hours with the shop press, possibly a torch, and maybe some choice words to get the job done. But it doesn’t have to be that...

Use the Little Radiator—and Have Customers Do the Same

Disclaimer: If a car is overheating and it is possible to safely exit the road and stop the car, that should always be the first course of action to avoid the risk of fire. The solution described in this article should only be used where that is not possible. If a car...

PSA: The Right (and Wrong) Ways to Handle Iridium Spark Plugs

For the vast majority of vehicles on the road, swapping out spark plugs is gravy work. Yoink the old plugs, make sure the replacements meet the necessary gap spec, install the new plugs, and button up the ignition system. You’re in and out of there in no time, right?...

Tool Review: Permatex 25240 Thread Locker

Disclaimer: This chemical was purchased at full retail price at the expense of the author, with no compensation from the retailer or manufacturer to write about the item.Be honest: do you always check the manual for the correct grade of factory-recommended sealant on...

Try Doing It the Wrong Way

Today’s article is composed of two quick tips that are distinct and different, but interrelated because they’re used on the same items: the humble fasteners we remove and install hundreds of times daily. These tips are both geared to newer techs since we all must find...

Modern Power Window Switches: Smarter than You’d Think

When was the last time you rolled down the power windows in an older car or truck? I’m talking at least pre-2000. The older, the better. As a passenger, you’ll find that every door has a mix of buttons, switches, locks, and handles to mess around with, plus maybe a...

Try Doing It the Wrong Way

Try Doing It the Wrong Way

by | Feb 17, 2026

Today’s article is composed of two quick tips that are distinct and different, but interrelated because they’re used on the same items: the humble fasteners we remove and install hundreds of times daily. These tips are both geared to newer techs since we all must find...
It’s All About the Process

It’s All About the Process

by | Feb 10, 2026

Man, it feels like just yesterday you graduated with that Associate’s in Automotive Tech, but nope, it’s been three months already, and you’ve landed a solid job at ABC Auto Repair back in your hometown. The boss has been taking it easy on you, dishing out...
Dealing with “System Lean” DTCs

Dealing with “System Lean” DTCs

by | Feb 3, 2026

The Engine Control Module (ECM) is always keeping an eye on the amount of fuel it is adding to the cylinders, and it’ll throw a code when it figures it can’t keep the mixture right where it needs to be. You might see codes like “system rich” or...
The Misunderstood Ford 6.0

The Misunderstood Ford 6.0

by | Jan 27, 2026

My wife and I are RVers and started our RV adventure with a 23’ toy hauler. When we started, we pulled the trailer with a Ram 1500 equipped with the 5.7-liter Hemi engine, and for most outings, it handled the task just fine. It wasn’t until we took a trip to the North...
Power and Ground Testing on an Electrical Circuit

Power and Ground Testing on an Electrical Circuit

by | Jan 20, 2026

I’ll never forget this one day in the shop. One of the other techs was wrestling with an electrical gremlin and swung by my bay for some backup. “Pete, mind giving me a hand? I’ve got this GMC pickup with a blower motor that’s running super...