M/T Shifter Assembly - Stuck in Gear

86chevy17

NUMBER: 86-B-33

GROUP: 7B - Manual Transmission
DATE: January, 1986
SUBJECT: SHIFTER ASSEMBLY - 76 MM 4-SPEED MANUAL TRANSMISSION RPO (MR2) M VAN AND 89 MM 4-SPEED OVERDRIVE MANUAL TRANSMISSION RPO (MY6) C, K, G

MODELS: 1985 M, 1984-85 C/K 15OO, AND 1983-85 G 15OO-2500


The 76 mm and 89 mm four-speed transmissions may develop a "stuck in gear" condition. This condition may be caused by the external shifter assembly slipping into neutral. This happens because the 1-2 shift lever is chamfered, allowing the selector pin to slide past the lever into a neutral position while the transmission remains in gear. An improved shifter has been released eliminating the chamfer on the 1-2 shift lever. The shifter may be used on past models to replace worn or damaged shifter assemblies. VIN breakpoints of when the redesigned shifter was installed on 1985 vehicles and the shifter part number for each model are as follows:

Model Plant Breakpoint VIN Part Number
M Baltimore FB509606 15522264

C/K Flint FF718851 15538302
Janesville FJ518642 15538302
St. Louis FS522805 15538302
Oshawa F1528320 15538302

G Lordstown F7514442 15522263
Scarsborough F4517237 15522263