Big cars have always been fun cruisers. There was even a time when big-horsepower classics were the norm, boasting such powerplants as 409, 396, 427, 454! And true to form, the last of the breed even got the potent Corvette LT1 stuffed beneath its long bonnet. While most might aspire to own one of these brawny behemoths, the more plentiful underpowered big boat cruisers can be just as much of a cherished ride, and maybe more so when you transplant late-model technology.
GM Tpi Trouble Codes Code Description13 Oxygen Sensor Voltage / ECU14 Coolant Sensor Voltage (HIGH)15 Coolant Sensor Voltage (LOW)16 Excess Charging System Voltage21 Throttle Position Sensor Voltage (HIGH)22 Throttle Position Sensor Voltage (LOW)23 Manifold Air Temp Sensor Voltage (HIGH)24 Vehicle Speed Sensor - Error25 Manifold Air Temp Sensor Voltage (HIGH)32 EGR System - Error33 MAP Sensor Voltage (HIGH)34 MAP Sensor Voltage (LOW)35 Idle Speed (HIGH/LOW) or IAC - Error41 MEM-CAL/PROM Select - Error42 Electronic Timing Control - Error43 Detonation Sensor - Error44 Oxygen Sensor / Lean Exhaust45 Oxygen Sensor / Rich Exhaust51 PROM - Error52 CALPAK - Error53 (HIGH) System Voltage54 Fuel Pump Voltage (LOW)55 Replace ECU - Defective58 VAT - Error61 Fouled Oxygen Sensor62 Oil Temp Sensor Voltage (HIGH)