LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Geo >> 1989 >> Spectrum L4-91.5 1.5L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Technical Service Bulletins >> All Technical Service Bulletins >> Engine Controls - Revised Diagnostic Circuit Check
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Engine Controls - Revised Diagnostic Circuit Check

89geo02

Number: 89-139-6E
Section: 6E
Date: April, 1989

Subject: REVISED CHART "DIAGNOSTIC CIRCUIT CHECK"


Model and Year: 1989 R CAR



TO: ALL CHEVROLET DEALERS


This bulletin serves to update Page 6E1-A-9 ("Scan" Diagnostic Circuit Check) in Section 6E1 "Driveability and Emission" in the 1989 Spectrum 1.5L (VIN 7) "R" Carline Service Manual. Please replace Page 6E1-A-9 with a copy of the reverse side of this bulletin.