VSS - Revised `Speedometer is Innacurate' Diagnosis

Bulletin Number:
93-8-9
Reference Number:
208122
Publish Date:
1/93



Subject:
SERVICE MANUAL UPDATE SECTION 8A - ELECTRICAL DIAGNOSIS VEHICLES SPEED SENSOR (SPEEDOMETER IS INACCURATE)

Models
Affected:
1991-93 BONNEVILLE SE MODELS 1991-93 PONTIAC SSE AND SSEI MODELS


Diagnosis for Test A "SPEEDOMETER IS INACCURATE" symptom found in the above mentioned service manuals has been revised to avoid any confusion and misdiagnosis.

The following revised text should replace the following given text for proper system diagnosis.


1991 Bonneville Service Manual, Page 8A-33-1
1992 Bonneville SE Service Manual, Page 8A-33-1
1992 Bonneville SSE/SSEI Service Manual - Book 2, Page 8A-33-1 1993 Bonneville Service Manual, Page 8A-33-1

THE TEXT WHICH STATES:


^ If scan tool and Speedometer do not display the same speed, replace the Instrument Cluster (see Section 8C).

SHOULD BE REPLACED WITH:


^ If scan tool and Speedometer do not display the same speed, do Test B.