M/T - Hops Out of Gear In Cold Weather
89chevy23GMC NUMBER: 89-T-84
GROUP: 7B - Manual Transmissions
DATE: July, 1989
CORPORATE
NUMBER: 867203R
SUBJECT: HOPS OUT OF GEAR
MODELS: 1985-1989 M VANS EQUIPPED WITH MH-3/ML2 MANUAL 5 SPEED TRANSMISSIONS
Some 1985-1989 M Vans equipped with 5-speed manual transmissions may experience Gear HopOut in cold weather. This condition is caused by the boot assembly exerting sufficient force on the shift lever to pull the transmission out of gear. This condition is unique to cold weather operation.
SERVICE PROCEDURE:
Replace the existing boot and lever with a new design boot, lever and insulator.
SERVICE MANUAL REFERENCES:
Refer to the Shift Controls section of the appropriate service manual for replacement of existing assemblies.
FIGURE NO. 1:
SERVICE PARTS INFORMATION: (Figure 1)
1. P/N 15642223 - Lever Assembly, Manual Transmission Control
2. P/N 15642221 - Boot Assembly, Transmission Control Lever
3. P/N 15642222 - Insulator Assembly - Manual Transmission Control Lever Boot
Parts are currently available from GMSPO.
For vehicles repaired under warranty use:
Labor Operation
Number: K1060 (Lever, Gearshift Controlreplace)
Labor Time 0.4