The wiring circuits in the vehicle are protected from short circuits by a combination of fuses and circuit breakers. This greatly reduces the chance of damage caused by electrical problems.
To check a fuse, look at the silver-colored band inside the fuse.
If the band is broken or melted, replace the fuse. Be sure to replace a bad fuse with a new one of the identical size and rating.
Fuses of the same amperage can be temporarily borrowed from another fuse location, if a fuse goes out. Replace the fuse as soon as possible.
To identify and check fuses, circuit breakers, and relays.
Electrical System Overload
Engine Compartment Fuse BlockSteering Angle Sensor Calibration Warning
Warning: For vehicles with electric power steering (EPS) and without
a vehicle stability enhancement program, the steering angle sensor
MUST always be calibrated after the battery has been disconnected. Failure to
calibrate the steering angle sensor could limit the operation
of the EPS system ...
Test Probe Caution
Caution: Do not insert test equipment probes (DMM etc.) into any
connector or fuse block terminal. The diameter of the test probes will
deform most terminals. A deformed terminal will cause a poor connection, which
will result in a system failure. Always use the EL-35616
GM-Approved Terminal T ...
Installation Procedure
Note: If the location of the original plug weld holes can not be
determined, space the braze holes every 40 mm (1½ in).
Create 5 x 18 mm (4/16 x 11/16 in) slots for MIG-brazing along the edges
of the rear floor panel filler as noted from the original
panel.
Clean and prepare ...