Park Avenue V6-231 3.8L VIN L SFI (1993)
Suspension Spring ( Coil / Leaf ): All Technical Service Bulletins
Coil Spring, Front - Noise
Bulletin: 93-3-16
Date: Aug. '93
Ref.No.: 93-178-3
Corp.Ref.No.: 203301R
SUBJECT:
FRONT COIL SPRING NOISE (INSTALL SLEEVE ON LOWER COILS/INSTALL NEW DUST SHIELD)
MODELS AFFECTED:
1991-93 PARK AVENUE/ULTRA
1992-93 LESABRE
This bulletin is being revised to include the 1993 model year and updates Bulletin 92-3-9A which should be discarded.
CONDITION:
Two conditions may occur in the front strut assemblies that may cause noise to be transmitted to the passenger compartment.
A.
Coil Contact Noise - This condition occurs when the two bottom coils of the springs contact each other as the vehicle is driven over bumps. This
condition is often mistaken as a rattle in the dash and is most predominant on, but not limited to, the following spring codes: CHF, CHH, CHL,
CHM, CHN, CHP.
B.
Dust Shield Noise - This condition is a plastic to metal squeak or itching that occurs in cold weather over bumps.
CORRECTION: A
1.
Verify that the noise is coil contact noise by spraying tracing powder on the lower two coils of the front springs.
2.
Drive or jounce the vehicle and check for contact points between the coils.
3.
Once coil contact has been identified, clean the spring, apply Kent Industries 10140 or 3M # 76/77N or equivalent high tack adhesive to the lower
two coils and install sleeve P/N 22077538 to cover the contact point.
CORRECTION: B
A new dust tube (GM Part Number 22129001) has been released for service. Follow the service manual for installation instructions.
Parts are currently available from GMSPO.
WARRANTY INFORMATION: (CONDITION A)
Labor Operation No.: T5273
Labor Time:
.3 hr. (One or Both)
WARRANTY INFORMATION: (CONDITION B)
Dust Tube Installation - See Labor Time Guide
