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HOMESERVICE MANUALSBUICK1999REGAL LSREPAIR AND DIAGNOSISENGINE MECHANICALENGINE MECHANICAL - 3.8L V6 - VINS [K & 1]TORQUE SPECIFICATIONS
1999 Buick Regal LS

Torque Specifications

1999 Buick Regal LSSECTION Torque Specifications
TORQUE SPECIFICATIONS

Application Ft. Lbs. (N.m)
Accelerator Control Cable Bracket Bolt 12 (16)
Balance Shaft Gear Bolt (1)
Step 1 16 (22)
Step 2 (2) Additional 70 Degrees
Balance Shaft Retainer Bolt 22 (30)
Camshaft Sprocket Bolt
Step 1 74 (100)
Step 2 (2) Additional 90 Degrees
Condenser Tube Nut ("F" Body) 12 (16)
Connecting Rod Bolt
Step 1 20 (27)
Step 2 (2) Additional 50 Degrees
Crankshaft Pulley/Balancer Bolt
Step 1 110 (150)
Step 2 (2) Additional 76 Degrees
Cylinder Head Bolts (3)
Step 1 37 (50)
Step 2 (2) Additional 120 Degrees
Step 3 (4 Center Bolts) (2) Additional 30 Degrees
Drive Belt Tensioner Bolts 37 (50)
EGR Valve Adapter Bolt 18 (25)
EGR Valve Adapter Nut 37 (50)
EGR Valve Heat Shield (4)
EGR Valve Inlet Pipe Bolt ("C" & "H" Bodies) 21 (29)
EGR Valve Outlet Pipe
Bolt
All Except "F" Body 21 (29)
"F" Body 18 (25)
Nut 21 (29)
Engine Lift Bracket-To-Ignition Control Module Bolt ("F" Body) 18 (25)
Engine Mount Bracket Bolt ("F" Body) 75 (102)
Engine Mount Nuts
All Except "F" Body 58 (78)
"F" Body
Lower 32 (43)
Upper 35 (47)
Evaporator Tube Bolt ("F" Body) 12 (16)
Exhaust Manifold Heat Shield Bolts/Nuts
All Except "W" Body (5)
"W" Body 15 (20)
Exhaust Manifold-To-Cylinder Head Bolts/Studs
"C", "G" & "H" Bodies
Inner Studs/Bolts 22 (30)
Outer Studs (5)
"F" Body 11 (15)
"W" Body 22 (30)
Exhaust Manifold-To-Cylinder Head Nuts
All Except "F" Body 22 (30)
"F" Body 13 (18)
Exhaust Pipe-To-Exhaust Manifold Bolts/Studs
Bolts/Studs
"F" Body 26 (35)
"C", "G", "H" & "W" Bodies 18 (25)
Nuts
"W" Body 26 (35)
Flywheel Bolt
Step 1 11 (15)
Step 2 (2) Additional 50 Degrees
Frame-To-Body Bolts ("W" Body) 133 (180)
Front Cover Bolt
Step 1 (6) 15 (20)
Step 2 (2) Additional 40 Degrees
Fuel Feed & Return Line Fitting 22 (30)
Generator Bolts
"C" Body 37 (50)
"F" Body
Front Inboard Bolt & Rear Bolt 22 (30)
Front Outboard Bolt 37 (50)
"G" Body
Except Rear Brace Bolts (VIN "1") & Lower Bracket-To-Block Bolts (VIN "K") 37 (50)
Lower Bracket-To-Block Bolts (VIN "K") 28 (38)
Rear Brace Bolts (VIN "1") 22 (30)
"H" Body
Except Rear Brace Bolts 37 (50)
Rear Brace Bolts 22 (30)
"W" Body (7)
Generator Brace-To-Intake Manifold Bolts ("F" Body) 18 (25)
Generator Positive Cable Nut 15 (20)
Heated Oxygen Sensor 31 (42)
Ignition Control Module Nuts
All Except "F" Body (8)
"F" Body 22 (30)
Intake Manifold Bolts
VIN "1"
Lower (1)(9) 11 (15)
Upper (Supercharger) 17 (23)
VIN "K"
Lower (1)(10) 11 (15)
Upper ("C", "G", "H" & "W" Bodies) (11)
Upper ("F" Body) (12)
Main Bearing Cap Bolt
Step 1 30 (40)
Step 2 (2) Additional 110 Degrees
Oil Cooler Adapter Connector 37 (50)
Oil Cooler Line-To-Radiator ("F" Body) 20 (27)
Oil Filter Adapter-To-Front Cover Bolt
"C", "G" & "H" Bodies 22 (30)
"F" & "W" Bodies
Step 1 11 (15)
Step 2 (2) Additional 50 Degrees
Oil Level Sensor 15 (20)
Oil Pan Bolt (1) 10 (14)
Oil Screen-To-Block Bolt 11 (15)
Power Steering Pump Mounting Nuts 23 (30)
Rocker Arm Bolt (1)
Step 1 11 (15)
Step 2 (2) Additional 90 Degrees
Side Main Bearing Cap Bolt
Step 1 11 (15)
Step 2 (2) Additional 45 Degrees
Spark Plugs 20 (27)
Supercharger-To-Intake Manifold Bolt (VIN 1) 17 (23)
Thermostat Housing Bolts
All Except "F" Body 15 (20)
"F" Body 20 (27)
Timing Chain Damper Bolt (Special Bolt) 16 (22)
Valve Lifter Guide Bolt 22 (30)
Water Pump Bolt
"C", "G" & "H" Body
Long Bolt 22 (30)
Short Bolt 11 (15)
"F" Body (2) 11 (15) Plus An Additional 80 Degrees
"W" Body
Long Bolt (2) 15 (20) Plus An Additional 40 Degrees
Short Bolt (2) 11 (15) Plus An Additional 80 Degrees
Wheel Lug Nuts 104 (140)
INCH Lbs. (N.m) 
Fuel Rail Retaining Bolts/Nuts
All Except "F" Body
VIN "K" 89 (10)
VIN "1" (14)
"F" Body 75 (8.5)
Idle Air Control Valve Screws 27 (3.0)
Ignition Coil-To-Control Module Screws 40 (4.5)
Ignition Control Module Harness Connector Bolt 22 (2.5)
Intake Manifold Vacuum Source Fitting Screws ("F" Body) 89 (10)
Oil Pump Cover Screw 97 (11)
Rocker Arm Cover Bolt (1) 88 (10)
Throttle Body Nuts/Bolts 89 (10)
Throttle Body Support Bracket Bolts 89 (10)
Torque Converter Cover Bolts
"C", "G" & "H" Bodies 115 (13)
"F" Body 75 (8.5)
"W" Body 89 (10)
(1) Apply thread locking compound to bolt(s).
(2) See Fig 1.
(3) Tighten bolts in sequence. See Figure.
(4) Information is not available from manufacturer.
(5) Tighten to 89 INCH lbs. (10 N.m).
(6) Apply thread sealant to bolt(s).
(7) Tighten bolts in sequence to 37 ft. lbs. (50 N.m). First, tighten the inboard generator bolt. Second, tighten the generator stud. Last, tighten the generator rear bracket bolt.
(8) Tighten nuts to 70 INCH lbs. (8 N.m).
(9) Tighten bolts in sequence. See Figure.
(10) Tighten bolts in sequence. See Figure or Figure.
(11) Tighten bolts in sequence to 89 INCH lbs. (10 N.m). See Figure.
(12) Tighten bolts No. 1-10 in sequence to 11 ft. lbs. (15 N.m). See Figure. Tighten side bolts No. 12 and 13 to 22 ft. lbs. (30 N.m).
() Refer to tightening procedure. See CRANKSHAFT & MAIN BEARINGS .
(14) Tighten fuel rail retaining bolts to 89 INCH lbs. (10 N.m). Tighten fuel rail retaining stud to 18 ft. lbs. (25 N.m).
Fig 1: View Of Torque Angles
G00215026Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.