This Haynes repair and service manual covers the following GM minivans:
Chevrolet Venture, 1997-2005
Oldsmobile Silhouette, 1997-2004
Pontiac Trans Sport, 1997-1998
Pontiac Montana, 1999-2005
Book Excerpt: 1997-2005 Chevrolet Venture, Olds Silhouette, Pontiac Trans Sport, Montana Repair Manual
ENGINE: CYLINDER HEADS
Refer to illustrations 9.3, 9.11m, 9.14a, 9.14b, 9.17a and 9.17b
CYLINDER HEAD REMOVAL
Disconnect the cable from the negative terminal of the battery. Caution: On models equipped with the Theftlock audio system, be sure you have the correct activation code before disconnecting the battery (see front of this manual).
Remove the air cleaner assembly (see Chapter 4) and then remove the upper and lower intake manifold as described in Section 7. If not already done, remove both engine torque struts (connecting the engine to the radiator support).
Note: The engine must be rotated to the forward position during many procedures in this Chapter, including all procedures which require access to the right (rear) side of the engine.
Many procedures that are associated with the left (front) side of the engine do not require the engine to be rotated. Only the components that are associated with the right cylinder head, valve cover, exhaust manifold, spark plugs, fuel, emission and electrical components from the centerline of the engine to the firewall require the engine to be rotated. See Section 19.
If you?re removing the front cylinder head, remove the oil dipstick tube mounting bolt (see illustration).
Disconnect all wires and vacuum hoses from the cylinder head(s). Be sure to label them to simplify reinstallation. Remove the spark plugs.
Detach the exhaust manifold from the cylinder head being removed (see Section 8).
Remove the rocker arms and pushrods (see Section 5).
SUSPENSION AND STEERING SYSTEMS
CONTROL ARM: INSTALLATION
8. Position the control arm in the subframe and install the pivot bolt and the vertical bushing bolt. Do not tighten them completely at this time.
9. Insert the balljoint stud into the steering knuckle boss, install the nut and tighten it to the torque listed in this Chapter?s Specifications. (Installing the stud so that the cotter pin hole is parallel to the steering knuckle will make it easier to install the pin). If necessary, tighten the nut a little more if the cotter pin hole doesn?t line up with an opening on the nut. Install a new cotter pin. Caution: The ends of the cotter pin must not contact the ABS wheel speed sensors or connectors or the driveaxles.
10. Install the stabilizer bar-to-control arm link bolt, bushings, spacers and washers (see Section 6) and tighten the link nut to the torque listed in this Chapter?s Specifications.
11. Place a floor jack under the outer end of the control arm and raise it to simulate normal ride height. Now tighten the control arm pivot bolt and the vertical bushing bolt to the torque listed in this Chapter?s Specifications. Caution: If the bolts aren?t tightened with the weight of the vehicle on the suspension (or the control arm raised to simulate normal ride height), control arm bushing damage may occur.
12. Install the wheel and lower the vehicle. Tighten the lugs nuts to the torque listed in Chapter 1 Specifications.