Mike's Workshop Manuals
: Service manuals for every vehicle
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GMC
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1987
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Magnavan 6.2 J, 475/M40
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Repair and Diagnosis
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Maintenance
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Procedures
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Maintenance Information.
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Maintenance Service Interval Definitions
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Severe & Normal Service Definitions
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Severe Service
Severe Service
Short Trips (4 Miles Or Less)
Freezing Temperatures
Towing Or Heavily Loaded
Severe Dust Conditions
Hot Weather, Stop-And-Go Driving
Extensive Idling Conditions (Taxi Or Delivery Type Service)