EXHAUST MANIFOLD BOLTS TIGHTEN OR REPLACE

DFI engine exhaust manifold leaks may be corrected by performing one of the following procedures:

1. Early Models with Non-Locking Bolts and Lock Tabs (See Figure 1)

Remove and discard non-locking bolts and lock tabs. Install prevailing torque bolts, P/N 1622236, and tighten to a torque of 25 N.m.

2. Late Models with Prevailing Torgue Bolts (See Figure 2)

Tighten bolts to proper torque of 25 N.m.

For warranty purposes, use Operation No. T6045, at .5 hours.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.