M/T - Diagnostic Information From Exchange Program
88pontiac23Bulletin Number: 88-7-42A
Reference Number: 877216R
Publish Date: 11/88
Subject: DIAGNOSIS INFORMATION FROM EXCHANGE PROGRAM
Models
Affected: 1986 1/2-88 FIERO, 1987-88 6000, SUNBIRD, AND GRAND AM AND 1988 GRAND PRIX
"This bulletin supersedes bulletin 88-7-42, dated 10/88. This bulletin is being revised to add 3 steps to Check Clutch Spin Down Time."
FIGURE 1 - HM-282 TRANSAXLE IDENTIFICATION INFORMATION:
BULLETIN COVERS: (Figure 1)
Diagnosis information on 1986-1/2 through 1988 vehicle applications equipped with a HM-282 five-speed manual transaxle. This information was gained from the expired exchange program disassembly analysis of returned transaxles. Before repairs are attempted, refer to the following diagnostic chart as a guide.
SERVICE ACTION:
Preliminary Diagnosis Procedure:
- Insure correct fluid level and proper type.
- Insure that the clutch is working properly (spin-down time and lost motion).
- Insure that all engine and transaxle mounts are tight.
SERVICE PARTS INFORMATION:
Parts are currently available from GMSPO.
SERVICE MANUAL REFERENCE:
Information in this bulletin is intended to supplement the HM-282 Section of your Service Manual.
1986 1/2, 1987 AND 1988
HM-282 DIAGNOSTIC CHART
NOTE: For all figure references, refer to the HM-282 on-car service section 7B3 or the HM-282 Unit Repair Section 7B3A of the 1988 Service Manual.