Engine Controls Schematic Icons

2004 Oldsmobile Bravada AWDSECTION Engine Controls Schematic Icons
WARNING: This page is about a different car, the 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
Engine Controls Schematic Icons

Icon Icon Definition
GM19385Courtesy of GENERAL MOTORS CORP.
NOTE: The OBD II symbol is used on the circuit diagrams in order to alert the technician that the circuit is essential for proper OBD II emission control circuit operation. Any circuit which fails and causes the malfunction indicator lamp (MIL) to turn ON, or causes emissions-related component damage, is identified as an OBD II circuit.
GM296880Courtesy of GENERAL MOTORS CORP.
IMPORTANT: Twisted-pair wires provide an effective shield that helps protect sensitive electronic components from electrical interference. If the wires were covered with shielding, install new shielding.
In order to prevent electrical interference from degrading the performance of the connected components, you must maintain the proper specification when making any repairs to the twisted-pair wires shown :
  • The wires must be twisted a minimum of 9 turns per 31 cm (12 in) as measured anywhere along the length of the wires
  • The outside diameter of the twisted wires must not exceed 6.0 mm (0.25 in)
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.