In this video, 1AAuto shows you how to replace a front engine mounted radiator fan clutch on an 80s GM Truck. This process is the same for many fan clutches that mount to the front of the water pump with 4 bolts.
1. Removing the Radiator Fan Clutch 0:59
2. Replacing the Radiator Fan Clutch 4:29
While 1A Auto strives to make the information provided in this video as accurate as possible, it makes no claims, promises, or guarantees about the accuracy, completeness or applicability of the content. No information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. All do-it-yourself projects entail some risk. It is the sole responsibility of the viewer to assume this risk. 1A Auto is not responsible or liable for any loss damage (including, but not limited to, actual, consequential, or punitive), liability, claim, or any other injury or cause related to or resulting from any information posted in this video.
Biweekly “How To” #53
Replacing the fuel pump hose inside the tank. This truck had many hands on it before I got to it.
To the best of my knowledge this video is accurate. I am in no way responsible for any occurance resulting from following the instructions in this video.
GM Trucks instrument clusters from the late 90s and 2000s are notorious for developing annoying issues as they age.
In this video I cover the diagnosis and repair of the “top three” problems that plague these clusters:
-Erratic or stuck gauges (@20:15 solder in new stepper motor)
-Burned out backlight bulbs (@ 20:15 solder in new bulbs)
-Dim or missing PRNDL display (@31:00 solder resistors)
There are many forum posts and other videos on YouTube that deal with the issues above, as well as less common problems that may arise.
My source for replacement stepper motors and backlight bulbs:
88 GMC sierra R3500 fuel injected mark iv big block. doug thorley headers, 3″ single exhaust with dynomax bullet muffler and a stock dodge ram resonator. 22.5 Alcoas off of a fire truck. tires are 255/70-22.5 goodyear low-pros. i have $2700 total into this truck not including the money its saved me.
Pretty ordinary drama free water pump replacement here. But hey I didn’t forget the brake clean 🙂 So stick around and see what it take to change out the water pump and thermostat on this 2002 GMC 2500HD equipped with the fuel efficient 6.0 liter.
Want hose clamp pliers like the ones I used in the video? Check out the new SMA A-Store:
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South Main Auto Repair
47 S. Main St
PO Box 471
Avoca, NY 14809
Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not South Main Auto Repair.
Dan the Tire Man has been in all aspects of the tire industry for over 33 years. And when you’re ready to buy, Dan offers a No Credit Check financing program where he ships tires, wheels and accessories nationwide to your door for only $49 out of pocket followed by low payments for up to one year. Pay it off in 90 days and save a lot of money. You can apply directly on our website at and receive an instant approval. Your credit will NOT be checked. Bad credit or no credit is okay. Also perfect for those of you trying to buy a house and needing credit to buy tires but you don’t want to get an inquiry ding on your credit report which would lower your FICO score.
Dan the Tire Man will show you how to measure your truck, Jeep or SUV to figure out what is the largest size tires you can put on it without a lift kit, leveling kit or sawzall. Whether you’re looking for an all terrain or mud tire, Dan can show you how to get the right size so that you don’t rub. Of course this isn’t an exact science since the vehicle manufacturers want you to keep the original equipment (OE) size on there. But grab a tape measure and sit back while Dan explains how to go up in tire size.
Dan will also give you a list of the most popular trucks and SUVs on the market and what the largest size tires you can fit on them.
(Disclaimer: If you change the OE tire size, you do so at your own risk. This is just a guide of what is most likely to fit based on our experience and that of others in the tire industry. But suspension sag and other factors may make these sizes irrelevant.)
Dan will also discuss a really cool little gadget called a Superchip. This is an electronic device that will help keep your speedometer on track when you size up. It will also help your engine perform much better, too. And can adjust for any gear ratio changes you’ve made.
Dan also discusses a very helpful tool called a tire size calculator offered by Tacoma World.
Again, learn all about our financing program by going to or call (207) 446-9470 to hear more about how the program works.
We hope you enjoyed our video about how to put larger tires on your vehicle. Have fun and be safe!
2006-99 Chevrolet Silverado 1500 (5.3L V8)
2006-00 Chevrolet Tahoe (5.3L V8)
2005-99 Chevrolet Silverado 1500 (4.8L V8)
2006-00 Chevrolet Suburban 1500 (5.3L V8)
2005-02 Chevrolet Avalanche 1500 (5.3L V8)
2005-01 Chevrolet Silverado 2500 HD (6L V8)
2005-99 GMC Sierra 1500 (5.3L V8)
2004-00 GMC Yukon XL 1500 (5.3L V8)
2004-01 GMC Yukon (5.3L V8)
2006-03 Chevrolet Express 3500 (6L V8)
This video shows how to install a water pump on a GM 4.8L / 5.3L V8 rear wheel drive vehicle. It is not representative of all RWD water pump installations and water pumps will vary in appearance. Please refer to your vehicle manufacturer for specific details on replacing your water pump.