Cardone 77-3977 Powertrain Control Module

Remanufactured PCM for 1994 GM Trucks and SUVs

Cardone 77-3977 is a remanufactured Powertrain Control Module for select 1994 Chevrolet and GMC applications. Built with a metal housing and pin/male connector terminals, it is intended for direct replacement where the original PCM has failed or is no longer operating correctly.

Compatible With 1994 Chevrolet Blazer, C1500, C1500 Suburban, C2500, C2500 Suburban, C3500, G20, G30, K1500, K1500 Suburban, K2500, K2500 Suburban, K3500, and P30, as well as 1994 GMC C1500, C2500, C2500 Suburban, C3500, G2500, G3500, K1500, K2500, K2500 Suburban, K3500, P3500, and Yukon.

Key Features

• Cardone Powertrain Control Module line for engine management replacement
• Part number 77-3977 for identification and ordering
• Remanufactured unit with metal housing
• Pin/male connector and terminal configuration
• Cross-references OE numbers 16183977 for Chevrolet and GMC applications
• Fits 1994 Chevrolet and GMC trucks, vans, SUVs, and chassis applications listed below

Product Details

Cardone 77-3977 is a remanufactured PCM built for 1994 Chevrolet Blazer, C/K-series trucks and Suburban models, G-series vans, P30 chassis, and 1994 GMC C/K-series trucks, G-series vans, P3500, and Yukon. As part of Cardone’s Powertrain Control Module line, this unit is focused on restoring factory-style engine control function in vehicles that rely on the original module architecture. The metal housing supports a durable replacement format, while the pin/male connector layout matches the listed applications.

This part cross-references OE numbers 16183977 for the same application.

Common Problems This PCM Can Address

• Engine no-start or intermittent start conditions caused by PCM failure
• Driveability issues tied to incorrect fuel or ignition control
• Check engine light concerns related to module malfunction
• Communication or control faults in the engine management system
• Replacement needs after water, heat, or electrical damage to the original module

Installation Notes and Tips

Before installation, transfer PROM(s)/CALPACK from the original module and perform any required relearns on the new Engine Control Module. Verify connector style, OE number, and vehicle application before replacement. Because this is a remanufactured electronic control component, proper diagnosis of the original failure is recommended before installation.

Quality Assurance

Cardone remanufactured electronic control modules are processed to restore function for listed OE-style applications and are identified by part number 77-3977 for accurate fitment matching.