This timing chain and component kit is just what you need to keep your GM Chevy GMC Truck in good running order.

Our timing belt or chain sets come from a company that is committed to supplying components that are engineered and manufactured under strict quality control procedures. They are leaders in timing component quality which provides you with the highest quality parts available on the market. They are an importer and supplier of high quality timing system products manufactured by both OEM and aftermarket manufacturers that understand quality standards. The distinct difference between them and other companies is that they are consistently supplying the highest level of quality components that is in demand from ASE Certified Mechanics everywhere!

The parts that you will receive in this kit are the same superior quality parts that the high level competition engine rebuilding shops call for and use everday. So do not settle for lesser quality parts when it comes to engine repair. Only go for the best knowing that 1A Auto has already done the research for you on the highest quality supplier available!

This high quality, timing chain set, contains the following pieces and has the following specifications:

  • (1) - Primary Timing Chain - 46 Link (silent type)
  • (1) - Cam Sprocket - 36 Teeth
  • (1) - Crankshaft Sprocket - 18 Teeth
  • Fits the following GM engines as listed:
    • V6 4.3L OHV (8th Vin Digit B or Z) LB4, LU2
      • These 4.3L engines do not use a balance shaft
    • V8 5.0L 305ci OHV (8th Vin Digit M) L30
    • V8 5.7L 350ci OHV (8th Vin Digit R) L31
      • This is the wide tooth (.400") application
      • For models with 4L80E Automatic Transmission (AT)

Please note: This timing chain kit is designed for the professional installer. It does not come with any installation instructions. If you do not have a service manual, please consult a professional mechanic prior to installing this kit.

Most car manufacturers recommend changing your timing chain between 50,000 and 70,000 miles (consult your owner's manual to see what your specific manufacturer suggests).

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser. Please keep your invoice for proof of this warranty.

  1. step : Removing the Fan Shroud (0:59)
    • Unclip the wiring retainer from the fan shroud with a flat blade screwdriver
    • Pull the wiring off the fan shroud and set it aside
    • Remove the seven 10mm bolts from the fan shroud
    • Lift the fan shroud up and out
  2. step : Draining the Coolant (1:47)
    • Twist off the radiator cap
    • Have a drain pan ready
    • Twist off the radiator drain plug
    • Allow the coolant to drain
    • Twist on the radiator drain plug
  3. step : Removing the Fan Clutch (2:13)
    • Attach an adjustable nut to the fan clutch nut
    • Tap the wrench with a hammer to loosen the nut
    • Attach a 3/8 inch drive ratchet to the serpentine belt tensioner
    • Turn the tensioner as far clockwise as possible
    • Tap the adjustable wrench with the hammer again
    • Remove the ratchet and the adjustable wrench
    • Spin off the fan clutch
  4. step : Removing the Serpentine Belt (3:16)
    • Familiarize yourself with the route of the serpentine belt
    • Insert the 3/8 inch drive ratchet into the tensioner
    • Turn the tensioner clockwise to loosen the belt
    • Pull the belt off the alternator
    • Release the tensioner
    • Pull the belt off by hand
  5. step : Removing the Water Pump (3:45)
    • Press the clamp on the upper hose
    • Twist the hose free
    • Remove the hose
    • Have a drain pan ready
    • Loosen the clamp on the lower hose
    • Wiggle the hose free
    • Remove the four 14mm bolts from the water pump
    • Pull the pump off
    • Remove the last hose
    • Remove the four 10mm bolts from the water pump pulley
    • Remove the pulley
  6. step : Removing the Crankshaft Pulley (5:51)
    • Remove the three 14mm crank pulley bolts
    • Remove the 16mm center bolt
    • Remove the pulley
  7. step : Removing the Harmonic Balancer (6:43)
    • Reinstall the 16mm center bolt without the washer
    • Insert the hardware from the puller kit into the bolt holes
    • Run in the center bolt supplied from the puller kit
    • Tighten the center bolt
    • Slide the harmonic balancer off
    • Remove the center bolt
  8. step : Removing the Timing Cover (8:22)
    • Disconnect the crank position sensor
    • Remove the 8mm bolt from the sensor
    • Remove the sensor
    • Remove the eight 10mm bolts around the timing cover
    • Remove the timing cover
  9. step : Removing the Timing Chain (9:15)
    • Remove the oil slinger
    • Insert a socket as a spacer into the crank
    • Rotate the crank until the timing marks on the gears line up so that both dots on the gears' teeth are lined up close to each other
    • Hold the crank shaft with a 16mm socket and ratchet
    • Remove the three 13mm cam sprocket bolts
    • Remove the camshaft sprocket and timing chain
    • Install the two or three jaw puller to the crank gear until the gear comes off
  10. step : Installing the Timing Chain (13:06)
    • Install the crank shaft gear with the dot facing you
    • Tighten the bolt with an impact gun
    • Insert a large socket or install tool and tap it to adjust the pulley into place
    • Insert the 16mm crank bolt
    • Insert the camshaft pulley and chain into place and around the crankshaft pulley
    • Push the cam gear in
    • Reinstall the three 13mm cam sprocket bolts
    • Torque the cam sprocket bolts to 26 foot-pounds
    • Reinstall the oil slinger with the high side facing in toward the crank gear
    • Remove the crank bolt
  11. step : Installing the Timing Cover (15:17)
    • Wipe off any grease off of the timing cover and around the chain
    • Scrape off any built-up gasket material with a razor
    • Wipe off any dirt and debris with brake cleaner
    • Apply oil safe gasket sealer to the bottom of the timing cover
    • Press the bolts into the cover
    • Press the cover into place
    • Tighten the 10mm bolts
    • Let the adhesive dry
    • Torque the bolts to 18 foot-pounds
    • Install the crank position sensor
    • Tighten the 8mm screw to the sensor
    • Connect the connector to the sensor
  12. step : Installing the Harmonic Balancer (19:35)
    • Install the installer tool into the crank shaft tightly
    • Insert the harmonic balancer onto the crank
    • Tap the balancer with a hammer
    • Install the sleeve of the install tool
    • Install the bearing
    • Install the bolt and tighten the nut down until the balancer is bottomed out
    • Remove the tool
  13. step : Installing the Crankshaft Pulley (21:15)
    • Insert the pulley into the engine
    • Tighten the 14mm bolts to the pulley
    • Tighten the 16mm center bolt and washer by hand
  14. step : Installing the Water Pump (21:40)
    • Tighten the four 10mm bolts to the pulley
    • Clean the gasket surfaces with a razor blade
    • Set the bolts into the pump
    • Place the gasket on the pump
    • Connect the inlet hose to the pump
    • Insert the pump into place
    • Tighten the hose clamp
    • Tighten the 14mm bolts to the water pump
    • Torque the bolts to 30 foot-pounds
    • Reinstall the remaining hoses to the water pump
  15. step : Installing the Serpentine Belt (23:23)
    • Loop the belt around the crank pulley
    • Bring it around the water pump
    • Bring it under the power steering pulley
    • Bring it around the A/C Pulley
    • Bring it around the belt tensioner
    • Bring it under the idler pulley
    • Pull the tensioner clockwise with the 3/8 inch ratchet
    • Pull the belt over the alternator
    • Release the tensioner
    • Torque the center crankshaft pulley bolt to 74 foot-pounds
  16. step : Installing the Fan Clutch (24:33)
    • Start the fan clutch nut onto the pulley by hand
    • Attach an adjustable nut to the fan clutch nut
    • Tap the wrench with a hammer to tighten the nut
  17. step : Installing the Fan Shroud (24:48)
    • Line up the fan shroud
    • Fasten the seven 10mm bolts into the fan shroud
    • Place the wiring on top of the fan shroud
    • Clip the wiring to the fan shroud
  18. step : Filling the Coolant (25:17)
    • Add coolant to the coolant bottle using a funnel
    • Twist on the coolant bottle cap
    • Run the engine briefly
    • Add coolant as necessary

Tools needed for replacement:

    Air Powered Tools

  • 3/8 Inch Air Impact Gun

  • General Tools

  • Hammer
  • Drain Pan
  • Razor Blade / Gasket Scraper
  • Funnel

  • Materials, Fluids, and Supplies

  • Paper Towels
  • Gasket Adhesive
  • Anti-Freeze
  • Brake Parts Cleaner

  • Pliers, Cutters & misc Wrenches

  • Channel-Lock Pliers
  • Adjustable Wrench

  • Ratchets & Related

  • Torque Wrench
  • 3/8 Inch Drive Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • Complete Metric Socket Set

  • Specialty Tools

  • 2 Jaw Gear Puller
  • Harmonic Balancer Puller
  • Harmonic Balancer Holding Tool
  • 3 Jaw Gear Puller

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How-to Video:

(26:29 min)

Tools List:

    Air Powered Tools

  • 3/8 Inch Air Impact Gun

  • General Tools

  • Hammer
  • Drain Pan
  • Razor Blade / Gasket Scraper
  • Funnel

  • Materials, Fluids, and Supplies

  • Paper Towels
  • Gasket Adhesive
  • Anti-Freeze
  • Brake Parts Cleaner

  • Pliers, Cutters & misc Wrenches

  • Channel-Lock Pliers
  • Adjustable Wrench

  • Ratchets & Related

  • Torque Wrench
  • 3/8 Inch Drive Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • Complete Metric Socket Set

  • Specialty Tools

  • 2 Jaw Gear Puller
  • Harmonic Balancer Puller
  • Harmonic Balancer Holding Tool
  • 3 Jaw Gear Puller




Vehicle Fit

  • 1999-2000 Cadillac Escalade Timing Chain Set V8 5.7L (8th Vin Digit R) 4L80E 4 Speed Automatic Transmission
  • 1987-1994 Chevy Astro Timing Chain Set V6 4.3L (8th Vin Digit Z)
  • 1990-1991 Chevy Astro Timing Chain Set V6 4.3L (8th Vin Digit B)
  • 1988-1994 Chevy Blazer S10 Timing Chain Set V6 4.3L (8th Vin Digit Z)
  • 1988-1989 Chevy Blazer S10 Timing Chain Set V6 4.3L (8th Vin Digit B)
  • 1988-1995 Chevy C1500 Truck Timing Chain Set V6 4.3L
  • 1988-1995 Chevy C2500 Truck Timing Chain Set V6 4.3L
  • 1996-1998 Chevy C2500 Truck Timing Chain Set V8 5.0L
  • 1996-2000 Chevy C2500 Truck Timing Chain Set V8 5.7L
  • 1989-1990 Chevy Caprice Timing Chain Set V6 4.3L (8th Vin Digit Z)
  • 1992-1993 Chevy Caprice Timing Chain Set V6 4.3L (8th Vin Digit Z)
  • 1988-1991 Chevy Corvette Timing Chain Set V8 5.7L (8th Vin Digit 8)
  • 1987 Chevy El Camino Timing Chain Set V6 4.3L (8th Vin Digit Z)
  • 1996-2002 Chevy Express 1500 Van Timing Chain Set V8 5.0L (8th Vin Digit M)
  • 1996-2002 Chevy Express 1500 Van Timing Chain Set V8 5.7L (8th Vin Digit R) 4L80E 4 Speed Automatic Transmission
  • 1996-2002 Chevy Express 2500 Van Timing Chain Set V8 5.0L (8th Vin Digit M)
  • 1996-2002 Chevy Express 2500 Van Timing Chain Set V8 5.7L (8th Vin Digit R) 4L80E 4 Speed Automatic Transmission
  • 1996-2002 Chevy Express 3500 Van Timing Chain Set V8 5.7L (8th Vin Digit R) 4L80E 4 Speed Automatic Transmission
  • 1988-1995 Chevy K1500 Truck Timing Chain Set V6 4.3L
  • 1988-1995 Chevy K2500 Truck Timing Chain Set V6 4.3L
  • 1996-2000 Chevy K2500 Truck Timing Chain Set V8 5.7L
  • 1996-1998 Chevy K2500 Truck Timing Chain Set V8 5.0L
  • 1988-1995 Chevy S10 Pickup Timing Chain Set V6 4.3L (8th Vin Digit Z)
  • 1996-1999 Chevy Suburban C1500 Timing Chain Set (8th Vin Digit R) 4L80E 4 Speed Automatic Transmission V8 5.7L
  • 1996-1999 Chevy Suburban C2500 Timing Chain Set (8th Vin Digit R) 4L80E 4 Speed Automatic Transmission V8 5.7L
  • 1996-1999 Chevy Suburban K1500 Timing Chain Set (8th Vin Digit R) 4L80E 4 Speed Automatic Transmission V8 5.7L
  • 1996-1999 Chevy Suburban K2500 Timing Chain Set (8th Vin Digit R) 4L80E 4 Speed Automatic Transmission V8 5.7L
  • 1996-2000 Chevy Tahoe Timing Chain Set V8 5.7L (8th Vin Digit R) 4L80E 4 Speed Automatic Transmission
  • 1990-1993 Chevy Van - P Series Forward Control Timing Chain Set V6 4.3L (8th Vin Digit Z)
  • 1990-1992 Chevy Van - P Series Forward Control Timing Chain Set V6 4.3L (8th Vin Digit B)
  • 1987-1996 Chevy Van G-Series Timing Chain Set V6 4.3L (8th Vin Digit Z)
  • 1988-1995 GMC C1500 Truck Timing Chain Set V6 4.3L
  • 1988-1995 GMC C2500 Truck Timing Chain Set V6 4.3L (8th Vin Digit Z)
  • 1988-1995 GMC C2500 Truck Timing Chain Set V6 4.3L
  • 1996-2000 GMC C2500 Truck Timing Chain Set V8 5.7L
  • 1996-1998 GMC C2500 Truck Timing Chain Set V8 5.0L
  • 1996-2000 GMC C3500 Truck Timing Chain Set V8 5.7L
  • 1987 GMC Caballero Timing Chain Set V6 4.3L (8th Vin Digit Z)
  • 1988-1994 GMC Jimmy S-15 Timing Chain Set V6 4.3L (8th Vin Digit Z)
  • 1988-1989 GMC Jimmy S-15 Timing Chain Set V6 4.3L (8th Vin Digit B)
  • 1988-1995 GMC K1500 Truck Timing Chain Set V6 4.3L
  • 1988-1995 GMC K2500 Truck Timing Chain Set V6 4.3L (8th Vin Digit Z)
  • 1988-1995 GMC K2500 Truck Timing Chain Set V6 4.3L
  • 1996-1998 GMC K2500 Truck Timing Chain Set V8 5.0L
  • 1996-2000 GMC K2500 Truck Timing Chain Set V8 5.7L
  • 1996-2000 GMC K3500 Truck Timing Chain Set V8 5.7L
  • 1988-1990 GMC S-15 Pickup Timing Chain Set V6 4.3L (8th Vin Digit Z)
  • 1991-1995 GMC S-15 Sonoma Timing Chain Set V6 4.3L (8th Vin Digit Z)
  • 1987-1994 GMC Safari Timing Chain Set V6 4.3L (8th Vin Digit Z)
  • 1990-1991 GMC Safari Timing Chain Set V6 4.3L (8th Vin Digit B)
  • 1996-2002 GMC Savana 1500 Van Timing Chain Set V8 5.0L (8th Vin Digit M)
  • 1996-2002 GMC Savana 1500 Van Timing Chain Set V8 5.7L (8th Vin Digit R) 4L80E 4 Speed Automatic Transmission
  • 1996-2002 GMC Savana 2500 Van Timing Chain Set V8 5.7L (8th Vin Digit R) 4L80E 4 Speed Automatic Transmission
  • 1996-2002 GMC Savana 2500 Van Timing Chain Set V8 5.0L (8th Vin Digit M)
  • 1996-2002 GMC Savana 3500 Van Timing Chain Set V8 5.7L (8th Vin Digit R) 4L80E 4 Speed Automatic Transmission
  • 1996-1999 GMC Suburban C1500 Timing Chain Set V8 5.7L (8th Vin Digit R) 4L80E 4 Speed Automatic Transmission
  • 1996-1999 GMC Suburban C2500 Timing Chain Set V8 5.7L (8th Vin Digit R) 4L80E 4 Speed Automatic Transmission
  • 1996-1999 GMC Suburban K1500 Timing Chain Set V8 5.7L (8th Vin Digit R) 4L80E 4 Speed Automatic Transmission
  • 1996-1999 GMC Suburban K2500 Timing Chain Set V8 5.7L (8th Vin Digit R) 4L80E 4 Speed Automatic Transmission
  • 1987-1996 GMC Van Timing Chain Set V6 4.3L (8th Vin Digit Z)
  • 1990-1993 GMC Van - P Series Forward Control Timing Chain Set V6 4.3L (8th Vin Digit Z)
  • 1990-1992 GMC Van - P Series Forward Control Timing Chain Set V6 4.3L (8th Vin Digit B)
  • 1996-2000 GMC Yukon Timing Chain Set V8 5.7L (8th Vin Digit R) 4L80E 4 Speed Automatic Transmission
  • 1991-1992 Olds Bravada Timing Chain Set V6 4.3L (8th Vin Digit Z)
  • 1987 Pontiac Grand Prix Timing Chain Set V6 4.3L (8th Vin Digit Z)
Only 4 left in stock
Part #: 1ATBK00063

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