Exhaust Crossover Pipe Replacement. Cadillac Concours 1996

For 1990-2009 cars

### Removal Procedure

1. Remove the transmission assembly. Refer to Transmission Replacement in Automatic Transmission.
2. Remove the two bolts at the left side exhaust manifold.
3. Remove the exhaust manifold rear pipe - four nuts and bolts.
4. Remove one bolt securing the crossover pipe to the crankcase.
5. Remove one bolt securing the crossover pipe to the cylinder head.
6. Remove the EGR supply tube.
7. Remove the crossover pipe.

### Installation Procedure

1. Install the flange and seal to the Exhaust Manifold Rear Pipe end of the crossover.
2. Position the crossover pipe and securely leaving the LH exhaust manifold joint loose.

Tighten
Tighten the crankcase support bolts to 30 N·m (22 lb ft).

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

• | Tighten the cylinder head support bolt to 30 N·m (22 lb ft).

3. Install the EGR supply pipe.

Tighten
Tighten the nut to 60 N·m (44 lb ft).

4. Tighten the fasteners installed in step 2 as follows:

Tighten
Tighten the left hand exhaust manifold bolts to 30 N·m (22 lb ft).

5. Install the Exhaust Manifold Rear Pipe and six bolts.

Tighten
Tighten the M10 bolts to the right hand manifold flange to 40 N·m (30 lb ft).

• | Tighten the M8 bolts to the crossover pipe flange to 30 N·m (22 lb ft).

• | Tighten the nuts at the converter to 25 N·m (18 lb ft).

6. Install the transmission assembly. Refer to Transmission Replacement in Automatic Transmission.