Engine - Highway Chuggle and Spark Knock Concerns

88buick18

Bulletin: 87-6E-28

Date: Nov. '88

Ref. No.: 87-234-6E

Corp. Ref. No.: 836538
SUBJECT: HIGHWAY CHUGGLE AND SPARK KNOCK CONCERNS

MODELS AFFECTED: 1987 SKYHAWKS WITH 2.0L OHC ENGINES (VIN CODE K)


Customers comments that identify a highway low-speed chuggle or spark knock concern may be repaired with the following changes.

^ Intake Manifold Drop-Tube Kit Part Number 10106050

^ EGR Valve:

Automatic Transmission Part Number 17112004
Manual Transmission Part Number 17112005

^ PROM Package:

NEW I.D. NEW
Transmission PROM P/N (SCAN TOOL) Broadcast Code

Automatic 16129056 9092 ANXH
Manual 16129057 9072 ANXD

Parts are currently available from GMSPO.

If driveability conditions still continue after the above changes, refer to Service Manual Section 6E2-B for further directions.

WARRANTY INFORMATION

Labor Operation Number: T1384
Labor Time: .9 Hours
Trouble Code: 92