GM Service Manual Online
For 1990-2009 cars only

Description

Specification

Metric

English

General Data

  • Engine Type

V6

  • Bank Angle

60°

  • Displacement

3,195 cm³

  • Bore X Stroke

89 x 85.6 mm

3.50 x 3.37 in

  • Compression Ratio

10:2:1

  • Firing Order

1-2-3-4-5-6

  • Maximum Power @ 6,600 RPM

169 kw

226.6 HP

  • Maximum Torque @ 3,200 RPM

297 N·m)

219.1 lb ft

Cylinder Block

  • Cylinder Bore Diameter

88.992-89.008 mm

3.503-3.504 in

  • Cylinder out of Round (MAX)

0.013 mm

0.000512 in

  • Crankshaft Main Bearing Bore Diameter

72.867-72.881 mm

2.8688-2.8693 in

  • Cylinder Head Deck Surface flatness

0.05 mm

0.00197 in

Crankshaft

  • Connecting Rod Journal Diameter

55.992-56.008 mm

2.2044-2.2050 in

  • Connecting Rod Journal Out of Round

0.005 mm

0.00020 in

  • Connecting Rod Journal Taper

0.005 mm

0.00020 in

  • Connecting Rod Journal Width (Production)

22.000 mm

0.8661 in

  • Connecting Rod Journal Width (Service Limit)

21.920-22.080 mm

0.8630-0.8693 in

  • Crankshaft End Play

0.100-0.330 mm

0.00394-0.0130 in

  • Crankshaft Main Bearing Clearance

0.010-0.060 mm

0.00039-0.00236 in

  • Crankshaft Main Journal Diameter

67.992-68.008 mm

2.6768-2.6775 in

  • Crankshaft Main Journal Out of Round

0.005 mm

0.00020 in

  • Crankshaft Main Journal Taper

0.005 mm

0.00020 in

  • Crankshaft Main Journal Width #2, 4 (Production)

24 mm

0.9449 in

  • Crankshaft Main Journal Width #2, 4 (Service)

23.900-24.100 mm

0.9409-0.9488 in

  • Crankshaft Main Journal Width #3 (Production)

24.4 mm

0.9606 in

  • Crankshaft Main Journal Width #3 (Service)

24.360-24.440 mm

0.9590-0.9622 in

  • Crankshaft Main Journal Thrust Wall Runout

0.000-0.040 mm

0.0000-0.00157 in

  • Crankshaft Main Journal Thrust Wall Square

0.000-0.010 mm

0.0000-0.00039 in

  • Crankshaft Rear Flange Runout

0.025 mm

0.00098 in

  • Crankshaft Reluctor Ring Runout (MAX)

1.500 mm

0.0590 in

  • Crankshaft Thrust Bearing Clearance

0.076-0.305 mm

0.0030-0.0120 in

  • Crankshaft Thrust Surface Runout

0.04 mm

0.00157 in

  • Crankshaft Thrust Surface - Height Diameter

95.000 mm

3.7401 in

Connecting Rod

  • Connecting Rod Length - Bore Center-to-Center

150.4 mm

5.9212 in

  • Connecting Rod Bore Diameter - Bearing End

59.620-59.636 mm

2.3472-2.3479 in

  • Connecting Rod Bore Diameter - Pin End

24.007-24.021 mm

0.9452-0.9457 in

  • Connecting Rod Width - Pin End

26.000 mm

1.0236 in

  • Connecting Rod Width - Bearing end

21.775 mm

0.8573 in

  • Connecting Rod Side Clearance

0.095-0.0355 mm

0.0037-0.0140 in

  • Connecting Rod Bearing Clearance

0.010-0.070 mm

0.00039-0.0028 in

Piston

  • Piston Diameter Center-to-Center

88.935-88.995 mm

3.5014-3.5037 in

  • Piston Pin Bore Diameter

24.005-24.009 mm

0.9451-0.9452 in

  • Piston Ring Groove Width - First (Top) Compression Ring

1.220-1.240 mm

0.0480-0.0488 in

  • Piston Ring Groove Width - Second Compression Ring

1.510-1.530 mm

0.0594-0.0602 in

  • Piston Ring Groove Width - Oil Control Ring

2.510-2.530 mm

0.0988-0.0996 in

  • Piston to Bore Clearance

0.026-0.052 mm

0.00102-0.00205 in

Piston Pin

  • Piston Pin Diameter

23.999-24.000 mm

0.94476-0.94488 in

  • Piston Pin Length

60.600-61.100 mm

2.3858-2.4055 in

  • Piston Pin Clearance to Connecting Rod Bore

0.007-0.024 mm

0.00028-0.00094 in

  • Piston Pin Clearance to Piston Pin Bore

0.0004-0.012 mm

0.00016-0.00047 in

Piston Rings

  • Piston Ring to Groove Clearance - First Compression Ring

0.030-0.065 mm

0.0012-0.0026 in

  • Piston Ring to Groove Clearance - Second Compression Ring

0.015-0.060 mm

0.00059-0.00236 in

  • Piston Ring to Groove Clearance - Oil Control Ring

0.030-0.170 mm

0.0012-0.006 in

  • Piston Ring End Gap - First Compression Ring

0.150-0.300 mm

0.0059-0.0118 in

  • Piston Ring End Gap - Second Compression Ring

0.280-0.480 mm

0.0110-0.0189 in

  • Piston Ring End Gap - Oil Control Ring

0.150-0.600 mm

0.0059-0.0236 in

Cylinder Head

  • Combustion Chamber Volume

49.400 cc

  • Valve Guide Bore Diameter - Intake

6.000-6.020 mm

0.2362-0.2370 in

  • Valve Guide Bore Diameter - Exhaust

6.000-6.020 mm

0.2362-0.2370 in

  • Valve Guide Installed Height

14.050-14.550 mm

0.5531-0.5728 in

  • Stationary Hydraulic Lash Adjuster (SHLA) Bore Diameter

12.008-12.030 mm

0.4727-0.4736 in

  • Valve Seat Angle - Seating Surface

45°

  • Valve Seat Angle - Relief Surface

30°

  • Valve Seat Angle - Undercut Surface

60°

  • Valve Seat Runout

0.050 mm

0.00197 in

  • Valve Seat Width - Exhaust Seating Surface

1.400-1.800 mm

0.0551-0.0709 in

  • Valve Seat Width - Exhaust Relief Surface

0.700-0.900 mm

0.0276-0.0354 in

  • Valve Seat Width - Intake Seating Surface

1.000-1.400 mm

0.0374-0.551 in

  • Valve Seat Width - Intake Relief Surface

0.500-0.700 mm

0.0197-0.0276 in

  • Engine Block Deck Surface Flatness

0.05 mm

0.0197 in

  • Exhaust Manifold Deck Surface Flatness

0.25 mm

0.0098 in

  • Intake Manifold Deck Surface Flatness

0.05 mm

0.0197 in

Value System

  • Face Angle

44.25°

  • Face Runout

0.038 mm

0.0015 in

  • Valve Face Width - Intake

2.180 mm

0.0858 in

  • Valve Face Width - Exhaust

2.750 mm

0.1083 in

  • Valve Head Diameter - Intake

35.030-35.290 mm

1.3791-1.3894 in

  • Valve Head Diameter - Exhaust

30.470-30.730 mm

1.1996-1.2098 in

  • Valve Length - Intake

101.230 mm

3.9854 in

  • Valve Length - Exhaust

97.110 mm

3.8232 in

  • Valve Stem Diameter - Standard

5.955-5.975 mm

0.2344-0.2352 in

  • Valve Stem Diameter - Oversize

6.013-6.033 mm

0.2367-0.2375 in

  • Valve Stem to Guide Clearance

0.025-0.065 mm

0.00098-0.00256 in

  • Hydraulic Lash Adjuster Diameter

11.986-12.000 mm

0.47189-0.47244 in

  • Hydraulic Lash Adjuster to Bore Clearance

0.037-0.041 mm

0.00146-0.00161 in

  • Rocker Arm/Camshaft Follower Ratio

1.68: 1

  • Rocker Arm/Camshaft Follower Roller Diameter

17.740-17.800 mm

0.6984-0.7008 in

  • Valve Spring Free Length

42.500-45.500 mm

1.6732-1.7913 in

  • Valve Spring Installed Height - Closed

35.000 mm

1.3779 in

  • Valve Spring Installed Height - Open

24.000 mm

0.9449 in

  • Valve Spring Load - Closed

247-273 N·m

182-201 lb ft

  • Valve Spring Load - Open

598-662 N·m

441-488 lb ft

  • Valve Spring Diameter - Inside Top

12.200-12.700 mm

0.4803-0.50 in

  • Valve Spring Diameter - Outside Top

18.000-20.500 mm

0.7087-0.8071 in

  • Valve Spring Diameter - Inside Bottom

17.950-18.450 mm

0.7067-0.7264 in

  • Valve Spring Diameter - Outside Bottom

26.000 mm

1.0236 in

  • Valve Spring Coil Thickness

3.250-3.900 mm

0.1279-0.1535 in

  • Valve Spring Total Number of Coils

7.1

Camshaft

  • Camshaft Bearing Inside Diameter - Front No. 1

35.000-35.020 mm

1.3779-1.3787 in

  • Camshaft Bearing Inside Diameter - Middle & Rear No. 2-4

27.000-27.020 mm

1.0630-1.0638 in

  • Camshaft End Play

0.045-0.215 mm

0.0018-0.00846 in

  • Camshaft Journal Diameter - Front No. 1

34.936-34.960 mm

1.3754-1.3764 in

  • Camshaft Journal Diameter - Middle & Rear No. 2-4

26.936-26.960 mm

1.0605-1.0614 in

  • Camshaft Journal Out of Round

0.006 mm

0.00024 in

  • Camshaft Journal to Bore Clearance

0.040-0.084 mm

0.0016-0.0033 in

  • Camshaft Runout - Front & Rear No. 1 & 4

0.025 mm

0.00098 in

  • Camshaft Runout - Front & Rear No. 2 & 3

0.050 mm

0.00197 in

  • Camshaft Lobe Duration - Exhaust (@ 0.150 mm Lift)

238°

  • Camshaft Lobe Duration - Intake (@ 0.150 mm Lift)

237°

  • Camshaft Lobe Height - Exhaust

6.6 mm

0.2598 in

  • Camshaft Lobe Height - Intake

6.5 mm

0.2559 in

  • Camshaft Lobe Overlap (@ 0.150 Lift)

-5 (no overlap)

  • Valve Opens - Exhaust

229°BTDC

  • Valve Opens - Intake

14° ATDC

  • Centerline - Exhaust

111° BTDC

  • Centerline - Intake

132° ATDC

  • Valve Closes - Exhaust

9° ATDC

  • Valve Closes - Intake

252° ATDC

  • Valve Lift - Exhaust

10.8 mm

0.4252 in

  • Valve Lift - Intake

10.8 mm

0.4252 in

Oil Pump

  • Type

Gerotor

  • Gear Diameter - Outer

87.095-87.175 mm

3.4289-3.4321 in

  • Gear Bore Depth

15.565-15.600 mm

0.6128-0.6142 in

  • Gear Bore Diameter

87.275-87.325 mm

3.4360-3.4380 in

  • Gear Thickness

15.511-15.536 mm

0.6107-0.6116 in

  • Gear to Cover Clearance

0.030-0.085 mm

0.0012-0.0033 in

  • Gear to Housing Clearance

0.100-0.230 mm

0.0039-0.0090 in

  • Inner Gear Tip Clearance

0.075-0.180 mm

0.0029-0.0071 in

  • Crankshaft Clearance to Housing

0.040-0.130 mm

0.0016-0.0051 in

  • Inner Gerotor Hub Diameter

53.310-53.335 mm

2.0988-2.0998 in

  • Housing Hub Diameter

53.380-53.420 mm

2.1016-2.1031 in

  • Inner Gerotor Hub Clearance to Housing

0.045-0.110 mm

0.0018-0.0043 in

Lubricating System

  • Oil Type

API SJ (ACEA A1) Grade SAE OW - 30

  • Oil Capacity - with Filter

7.4L

  • Oil Capacity - without Filter

7.0L

  • Oil Pressure - Minimum at Idle

69 kPa

10 PSI

  • Oil Pressure - Minimum at 2,000 RPM

138 kPa

20 PSI

  • Piston Cooling Jet Valve Opening System

170-230 kPa

25-33 PSI