Operation CHARM
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GMC Truck
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1988
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Suburban 3/4 Ton 4WD V8-454 7.4L
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Repair and Diagnosis
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Powertrain Management
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Transmission Control Systems
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Technical Service Bulletins
Transmission Control Systems: Technical Service Bulletins
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Customer Interest
TCC - False Code 32/ Possible MIL ON
A/T - Buzzing Noise at Idle
Drivetrain - Slow Or No Engagement of Front Axle
Overview
Service Procedure
By Symptom
Customer Interest
TCC - False Code 32/ Possible MIL ON
A/T - Buzzing Noise at Idle
Drivetrain - Slow Or No Engagement of Front Axle
Overview
Service Procedure
False instrument warning light/gauges
TCC - False Code 32/ Possible MIL ON
Noise
A/T - Buzzing Noise at Idle
All Technical Service Bulletins
TCC - False Code 32/ Possible MIL ON
A/T - New Solenoid Assembly & Wiring Harness
A/T - Buzzing Noise at Idle
A/T Fluid Level Indicator - Revised (Sealed)
Drivetrain - Slow Or No Engagement of Front Axle
Overview
Service Procedure