GMC R2500 Suburban Engine >> MOUNTING BRACKET BOLT BREAKAGE ON 7.0 & 7.4L ENGINES
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GMC R2500 Suburban Engine >> MOUNTING BRACKET BOLT BREAKAGE ON 7.0 & 7.4L ENGINES
Mounting Bracket Bolt Breakage On
1996-2000 GM 7.0 & 7.4L VIN M, P, B & D Engines
AERA members have reported repeated generator mounting bracket bolt breakage on 1996-2000 GM 7.0 & 7.4L VIN M, P, B & D engines. These engines are used in Chevrolet and GMC C6 and C7 conventional medium duty trucks. The frequency of breakage has not been consistent between customers, but may be related to multiple engine duty cycles.
To correct this condition, GM now offers a new generator rear support bracket and brace rod assembly. Refer to the list below to obtain components required to install the new assembly.
Part Number Description Quantity
11505992 Nut 1
15766728 Bracket, Rear Generator, 7.0L 1
15766727 Bracket, Rear Generator, 7.4L 1
15764193 Assembly, Brace Rod 1
15650963 Washer 1
09424338 Bolt 1
Before installing the brace and bracket, apply a small amount of medium strength threadlocker (Part #12345382 or aftermarket equivalent) to the bolt/nut threads. Then, torque the mounting bolt and stud nut to 37 ft/lbs (50 Nm).
The AERA Technical Committee
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