Automatic transmission: park/neutral start interlock switchRecall 74V-226 · Chevrolet and GMC vehicles

GENERAL MOTORS CORP. recall 74V-226 covers 811 Chevrolet and GMC vehicles for a automatic transmission: park/neutral start interlock switch problem, reported to NHTSA on November 21, 1974.

Vehicles repairedNo manufacturer report yet

Vehicles affected81112 models

ReportedNov 21, 1974Owners notified Nov 27, 1974

Complaints since0Same system, after the recall

Source: NHTSA recall 74V226000 and manufacturer quarterly reports. Started by the manufacturer.

What's wrong

The problem

What to do

The fix

The remedy has not been described yet.

CHEVROLET CAMPAIGN NO 74-C-19.POSSIBILITY WHEN THE ALLISON MT-650TRANSMISSION IS MATCHED WITH EITHER THE 366 OR 427 CID V-8 ENGINES, THE 1,3 TO1,0 GOVERNOR DRIVE-TO-DRIVEN GEAR RATION CAN CREATE EXCESSIVE GOVERNOR RPM WHENOPERATED IN TOP GEAR AT OR NEAR MAXIMUM RATED ENGINE SPEED RPM OF 4000.THEEXCESSIVE GOVERNOR SPEED CAN RESULT IN A GOVERNOR DRIVEN GEAR FAILURE.AFAILURE OF THIS TYPE CAN CAUSE A DOWN SHIFT OF THE TRANSMISSION WITHOUTWARNING.IF THIS OCCURS, TRANSMISSION AND ENGINE SPEED WOULD INCREASE GREATLYAND MAY RESULT IN ONE OF THESE COMPONENTS BREAKING.(CORRECT BY INSPECTING ANDINSTALLING NEW TRANSMISSION REAR HOUSING ASSEMBLY AND GOVERNOR WITH 1.0 TO 1.0 DRIVE-TO-DRIVEN RATIO.)

Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.

12 models

Vehicles in this recall

Chevrolet CE651973, 1974

Chevrolet HE701974

Chevrolet JE701974

Chevrolet JE801974

Chevrolet ME651973, 1974

Chevrolet TE651973, 1974

GMC CE65001973, 1974

GMC HE75001974

GMC JE75001974

GMC JE85001974

GMC ME65001973, 1974

GMC TE65001973, 1974