OEMTOOLS24210 GM Upper Control Arm Knock Out Tool

Love GM to the grave and back, but the thought process behind NOT punching the slotted holes in both upper control arm mountings on the production line is a valid reason to tell them to sleep on the couch. Enter the OEMTOOLS 24210! It was there when I needed it, it didn't complain about getting me through the hard times, didn't insert it's own opinion, listened to everything I had to say, and didn't judge me.I'm not a professional tech, just a 30+ year weekend warrior, so I had never ran into this problem......until I did. If you are doing any kind of front end work for a living or "the person that does car things" in your friends lives, you should have one of these in your toolbox. Amazon got me one the next day with Prime, when I had a job for my father tied up. Few minutes of pushing pins into my GM Engineer voodoo doll while cursing his/her existence and PRESTO, adjustable upper control arms!There are no instructions or packaging, it's use is pretty self explanatory. My GMT400 application (88-98 chevy/gmc truck) had one side of the mount punched and not the other, so I had to use it on 4 holes. It worked like a champ every time. Put a little grease on the threads to keep it from seizing up and go to town. I've purchased several tools from the OEMTOOLS brand and have been happy with all of them. You really can't go wrong. Happy wrenching!

Sturdy, effective tool for the job. No less well made than any other more expensive brand. Two caveats for those less familiar: always use lots of grease on the threads of anything with a forcing screw; and, this is important, take note of which side of the hole is scored. The arbor should pull from the side that is scored. This usually means the bulk of the tool with the nut should be inside the control arm bracket. If you do this, you won’t have any trouble.

The price is right and the job is so much easier using this tool. Didn’t even need an impact just used a wrench and it cut through like butter making a perfect slot know my control arms are adjustable

It did not seat well nor knockout properly, but enough clean up with die grinder. Some trucks may vary if I had to guess. 98 k1500 chevy

I spent several hours trying to knock out these tabs, bought this tool had all four knocked out in about 20 minutes!!!

Used on 1990 k2500. I feel tabs on the earlier years are a little harder to remove. The tool wants to rotate as you tighten the nut so I had to shove a screw driver in it to keep it straight. One side it did a decent job punching the metal out. The other side it made quite a mess. Had to file/grind to clean it up

I used this on my 1992 Silverado 4x4 while installing new upper control arms. It worked very well. I did add some grease to the bolt and nut to lessen the friction. Alignment shop wanted 90$ per side to remove the knockouts. This tool saved me some money.

This tool worked like a dream. The auto shop did not have this tool and was on back order from the parts and tool distributor. Got the tool from Amazon in just a couple of days.( Shop received the tool they ordered 3 days after the repair was made)