gmc Workshop Repair Guides

GMC C 2500 Suburban 2WD V8-454 74L Workshop Service and Repair Manuals

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A/T - 4L80-E 2nd Gear only After A Cold Start/DTC 87|Page 5805 > < A/T - 4L80-E 2nd Gear only After A Cold Start/DTC 87|Page 5803

1994 C 2500 Suburban 74L Transmission Control Module Issue

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Parts Information

Important:

In 1994, the L65 and L56 engines changed fuel injection pumps that required a new EPROM. The current fuel injection pump will service prior
models. Be sure to match the EPROM with the proper engine fuel injection pump.

Parts are currently available through GMSPO.

Warranty Information

For vehicles repaired under warranty, use the table.

A/T - 4L80-E 2nd Gear only After A Cold Start/DTC 87|Page 5805 > < A/T - 4L80-E 2nd Gear only After A Cold Start/DTC 87|Page 5803