1A Auto Video Library
Our how-to videos have helped repair over 100 million vehicles

How to Replace Serpentine Belt 96-99 Buick LeSabre

Share on:
  1. step : Removing the Wheel (0:35)
    • Familiarize yourself with the belt routing diagram
    • Pry off the center cap with a flat blade screwdriver
    • Loosen the lug nuts with the vehicle on the ground
    • Raise the vehicle with a floor jack
    • Secure the vehicle on jack stands
    • Remove the lug nuts
    • Pull off the wheel
  2. step : Removing the Motor Mount Stud (1:06)
    • Support the engine with a jack and a block of wood
    • Remove the three plastic rivets from the splash shield
    • Pull the splash shield aside
    • Remove the 18mm nut and stud from the motor mount
    • Remove the motor mount stud sleeve
  3. step : Removing the Serpentine Belt (3:16)
    • Attach a 15mm socket and ratchet to the serpentine belt tensioner
    • Turn the tensioner to loosen the belt
    • Pull the belt off the alternator pulley
    • Pull the belt off the remaining pulleys
    • Pull the belt up and out
  4. step : Installing the New Serpentine Belt (3:55)
    • Loop the belt around the A/C compressor pulley
    • Bring it around the crankshaft pulley
    • Bring it around the water pump pulley
    • Bring it around the idler pulley
    • Bring it around the power steering pulley
    • Attach a 15mm socket and ratchet to the serpentine belt tensioner
    • Turn the tensioner to loosen the belt
    • Pull the belt onto the alternator pulley
    • Release the tensioner
    • Check that the belt is routed correctly
  5. step : Reinstalling the Motor Mount Stud (5:51)
    • Slide the motor mount stud sleeve into place
    • Start the motor mount stud into place
    • Tighten the motor mount stud and nut
    • Put the splash shield into place
    • Insert the three plastic rivets into the splash shield
    • Lower the jack
  6. step : Reattaching the Wheel (5:51)
    • Slide the wheel into place
    • Start the lug nuts by hand
    • Tighten the lug nuts preliminarily
    • Lower the vehicle to the ground
    • Tighten the lug nuts to the manufacturer's recommend torque in a crossing or star pattern
    • Reattach the center cap

Brought to you by, your source for quality replacement parts and the best service on the Internet.

Hi, I'm Don from 1A Auto. I hope this how-to video helps you out, and next time you need parts for your vehicle, think of Thanks.

In this video I'm going to show you how to replace a serpentine belt on a '97 Buick LeSabre. It should be the same operation for a 97-99 LeSabre with a 3.8 liter engine. The items you're going to need are a 15mm, 18mm, and 19 mm socket and socket wrench; a flat pocket screwdriver; pliers; a floor jack; and a new belt from 1A Auto.

Before taking your belt off, reference this diagram, and that's what you're going to need to remember when you go to put the belt back on. Using a flat blade screwdriver in the notch, pry off your cover. With 19mm socket and air gun, remove your wheels.

Now, with the tire off, I'm going to support underneath the engine with the floor jack, and I've got some wood between the floor jack and the oil pans so it doesn't damage it, and we just want to support that as we're taking out a bolt from the motor mount. Inside the wheel well you're going to find one, two, and then three, plastic rivets. I'm using a flat head screwdriver and a pair of pliers. I'm going to pry out the center portion of the plastic rivet and give a tug with my pliers. Pull out the rivet. Do that for all three. In this case, this vehicle is missing the one that's up inside. Just pull down your splash pan.

Inside the wheel well, locate the 18mm nut on the lower portion of the motor mount bracket. Using an 18 mm socket, extension, and socket wrench, remove the 18 mm nut. You'll see, when I pull it out, that it's actually a nut with a stud attached to it, and you want to just pull them both out.

Now, back on top of the engine, standing on the passenger's side, looking down, you're going to notice the sleeve that the bolt went around is still in there, right down here. You just need to pull that out.

The belt tensioner pulley is right below the alternator. The alternator being here, here being the belt tensioner, and I'm going to use a 15mm socket and socket wrench to loosen up the tension on the belt. Once I've got that, I'll slide it off the alternator pulley, and the rest of the pulleys. Snake the belt back up through the top.

We've got our old belt, and we've got our new belt from 1A Auto, an exact replacement fit. Take the new belt. I'm going to snake it in, inside of the motor mount and through the space where the bar was that we took out. I'm going to put it over the A/C compressor, bring it around to the crank pulley. I'm going to bring it up over the water pump, up to the idler, down to the power steering. Here you can see that the belt is down on the A/C compressor, around the crank, up to the water pump, up over the tensioner, down to the power steering pulley, and back up around to here. Now, when I put the pressure on the tensioner, to release it, I should be able to snake the belt right over the alternator pulley. Put your 15mm on the tensioner and get ready to move counter clockwise. Have the belt in your other hand, and put it on. Here you see the belt up over the alternator, tensioner pulley, water pump, crank, AC compressor, and power steering pump.

We hope this video helps you out. Brought to you by, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.

Tools needed for replacement:

    General Tools

  • Jack Stands
  • Floor Jack

  • Materials, Fluids, and Supplies

  • Block of Wood

  • Pliers, Cutters & misc Wrenches

  • Needle nose pliers

  • Ratchets & Related

  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 15mm Socket
  • 19mm Socket
  • 18mm Socket

1996 - 1998  Oldsmobile  98
1996 - 1999  Pontiac  Bonneville
2007 - 2010  Saturn  Outlook
1996 - 1999  Oldsmobile  LSS
1997 - 1999  Oldsmobile  LSS
1996 - 1998  Oldsmobile  98-Regency
1996 - 1998  Oldsmobile  Regency
2003 - 2005  Mercedes Benz  E320
2003 - 2005  Mercedes Benz  E500
1999 - 1999  Oldsmobile  88
1996 - 1998  Oldsmobile  88
2001 - 2002  Mercedes Benz  S55 AMG
2003 - 2006  Mercedes Benz  SL500
2002 - 2006  Mercedes Benz  S430
2002 - 2006  Mercedes Benz  S500
2006 - 2007  Mercedes Benz  ML500
2006 - 2007  Mercedes Benz  R500
1996 - 1996  Buick  Park Avenue
2008 - 2013  Buick  Enclave
1996 - 1999  Buick  LeSabre
1996 - 1998  Buick  Riviera
1990 - 1995  Chevrolet  C1500 Truck
1989 - 1994  Chevrolet  Blazer Full Size
1990 - 1995  Chevrolet  C2500 Truck
1990 - 1995  Chevrolet  K1500 Truck
1990 - 1995  Chevrolet  C3500 Truck
1990 - 1995  Chevrolet  K2500 Truck
2003 - 2003  Mercedes Benz  C240
2003 - 2005  Mercedes Benz  CLK55 AMG
2005 - 2006  Chevrolet  SSR
1988 - 1995  Chevrolet  S10 Pickup
1990 - 1995  Chevrolet  K3500 Truck
2009 - 2013  Chevrolet  Traverse
1995 - 1995  Chevrolet  Tahoe
2003 - 2005  Mercedes Benz  CLK500
1991 - 1991  GMC  Syclone
1992 - 1993  GMC  Typhoon
1988 - 1990  GMC  S-15 Pickup
1991 - 1995  GMC  S-15 Sonoma
2004 - 2005  Mercedes Benz  C240
2003 - 2005  Mercedes Benz  C320
1992 - 1995  GMC  Yukon
2000 - 2002  Jaguar  S-Type
1990 - 1995  GMC  K2500 Truck
1990 - 1995  GMC  K3500 Truck
1990 - 1995  GMC  C3500 Truck
1990 - 1995  GMC  K1500 Truck
1990 - 1995  GMC  C2500 Truck
1990 - 1995  GMC  C1500 Truck
1989 - 1991  GMC  Jimmy
1989 - 1991  Ford  F350 Truck
2007 - 2013  GMC  Acadia
1989 - 1991  Ford  F250 Truck
1996 - 1996  Ford  Explorer
2001 - 2001  Ford  Explorer
1989 - 1991  Ford  E250 Van
1989 - 1991  Ford  E350 Van
2004 - 2004  Chrysler  Pacifica
1989 - 1991  Chevrolet  Suburban R1500
1989 - 1991  Chevrolet  Suburban V1500
1992 - 1995  Chevrolet  Suburban C1500
1992 - 1995  Chevrolet  Suburban K1500
1989 - 1991  Chevrolet  Suburban R2500
1989 - 1991  Chevrolet  Suburban V2500
1992 - 1995  Chevrolet  Suburban C2500
1992 - 1995  Chevrolet  Suburban K2500
2001 - 2001  Mercedes Benz  CL55 AMG
2001 - 2001  Mercedes Benz  CL500
2002 - 2002  Mercedes Benz  CL55 AMG
2002 - 2005  Mercedes Benz  CL500
1988 - 1994  Chevrolet  Blazer S10
1995 - 1995  Chevrolet  Blazer
1988 - 1991  GMC  Jimmy S-15
1992 - 1995  GMC  Jimmy

How to Locate Your VIN Number

How to Locate Your VIN Number

This video teaches you where to look on your vehicle to find the Vehicle Identification Number (VIN).

Search Videos
Go To Top

Same Day Shipping

Orders ship same day when ordered by 2pm ET. Need your part faster? Choose expedited shipping at checkout.

Guaranteed To Fit

Providing you the highest quality, direct fit replacement auto parts enforced to the strictest product standards.

USA Customer Support

Exceeding customers' expectations every day, our team of passionate auto enthusiasts are here to help.

Instructional Video Library

Thousands of how-to auto repair videos specific to year, make and model guide you step-by-step through your repair.