This factory service and repair manual for the 1988 GMC P60 addresses the P6T042 configuration, the only one listed for the model year, with no engine displacement itemized in the vehicle record. The manual's usefulness lies in its structure: each system is taken in turn, with the removal and installation procedure first, then the specifications and torque values, then the wiring diagrams and the diagnostics. A truck sold as a chassis is serviced by that kind of ordered reference far more often than by any single repair.
Trims covered
- P6T042
Known issues on the 1988 P60. The 1988 P60 carries a clean federal record, with no recall campaigns and no owner complaints logged with NHTSA. Rather than a list of known failures, then, what this manual provides is the means to work on the truck correctly: procedures in their proper order, specifications to check parts against, torque values for reassembly, and wiring diagrams with diagnostic sequences for the chassis electrical systems.
