EXHAUST LEAK NOISE / SQUEAK REPLACE NUT/SPRING ASSY.

SUBJECT EXHAUST LEAK NOISE OR SQUEAK AT EXHAUST PIPE TO MANIFOLD SEAL - REPLACE NUT/SPRING ASSEMBLY,STUDS, AND SEAL

MODELS/YEARS 1992 ACHIEVA WITH 2.3L (VIN A, D, 3) ENGINES ONLY

This builetin cancels and supersedes Dealer Technical Bulletin 92-T-54 which should be discarded.

CONDITION: Some 1992 Achieva models built between the start of production and vehicle number NM401575 may exhibit an exhaust leak noise at the exhaust manifold to exhaust manifold pipe seal during heavy load (i.e., wide open throttle) while in "drive." - OR - An exhaust squeak at the exhaust manifold to exhaust manifold pipe seal when shifting into 'drive' or "reverse" (when the engine moves on its mounts).

CAUSE: Low clamp load on exhaust seal causes leak noise. High clamp load on exhaust seal causes squeaks.

CORRECTION: For vehicles built BEFORE vehicle number NM401575: Replace the exhaust seal, studs, nut/spring assembly if the exhaust seal leaks during wide open throttle (in 'drive") or squeaks.

For vehicles built AFTER vehicle number NM401575: Replace the exhaust seal if the exhaust seal leaks or squeaks.

PARTS INFORMATION:

Part Numbers Description per Car 24570569 Nut/Spring Assembly 2 24573215 Stud 2 22545205 Seal 1

WARRANTY INFORMATION:

For vehicles built before vehicle number NM401575 (replace seal, studs, nut/spring assembly): Labor Time Operation Number: Tl 792 Labor Time Allowance: 0.4 hour Trouble Code: 92

For vehicles built after vehicle number NM401575 (replace seal only): Labor Time Operation Number: L2090 Labor Time Allowance: 0.3 hour

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.