GM Service Manual Online
For 1990-2009 cars only

Object Number: 1657022  Size: C2

Object Number: 1672880  Size: C1

Battery power is supplied through two fusible links, one 50 amp and one 65 amp, to three circuit breakers and two control relays located in the relay center above the accelerator pedal. For location information, see "Servicing Relays and Circuit Breakers" in the Index. A 50 amp circuit breaker feeds power directly from the 50 amp fusible link through a 10 gauge (5.0 mm²) blunt cut wire. Two 30 amp circuit breakers supply power from the 65 amp fusible link through the contacts of the control relays to 12 gauge (3.0 mm²) blunt cut wires. The blunt cut leads are part of a 5 ft (1.5 m) loop of wire coiled under the instrument panel in the front passenger side footwell.

Each relay is operated by an 18 gauge (0.8 mm²) blunt cut, light or dark blue control lead included in the 5 ft (1.5 m) coil under the instrument panel. An 8 gauge (8.0 mm ²) ground lead is also provided in the 5 ft (1.5 m) coil. The total current available through the 12-volt power supply is 110 amps (1320 watts).

Blunt cut ignition controlled power and signal circuits are also included in the following 5 ft (1.5 m) right foot loop:

    • A yellow, 20 gauge (0.5 mm²) 10 amp fused circuit, Hot in ACC/ACCESSORY, ON/RUN or RAP (Retained Accessory Power). The fuse for this circuit is labeled "RAP" and is located in the fuse block in the front passenger side footwell of the vehicle in the carpet molding.
    • A pink, 20 gauge (0.5 mm²) 10 amp fused circuit, Hot in START and ON/RUN. The fuse for this circuit is labeled "PWR DROP/CRANK" and is located in the under hood fuse block in the engine compartment.
    • A yellow/black, 20 gauge transaxle park signal from the Body Control Module (BCM). The circuit provides a switched power when the transaxle is not in PARK (P) and the engine is running. The electrical load attached to the park circuit must not exceed 0.5 amps and is meant to drive one relay coil.
    • A brown, 22 gauge (0.35 mm²) vehicle speed signal (4,000 pulses/mile) from the ABS module. Connect only high impedance load.