ARROWS AND SYMBOLS
This service manual uses various symbols in order to describe different
service operations.
Front of Vehicle
View Detail
Ambient Air Mixed with Another Gas or Indicate Tempera
The vehicle identification number (VIN) plate is the legal identifier of the
vehicle. The VIN plate is
located on the upper left corner of the instrument panel (I/P) and can be seen
through the win
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diagnostic Procedure Instructions provides an overview of each
diagnostic category.
DTC Descriptors
D
WARNING: If a service procedure indicates that a module is to be
replaced, a new
production unit MUST be ordered from the GM Parts Catalog or certified
supplier. Using a module that has been reset by a 3rd party company is strictly
prohibited. Not using a new production unit may result in improper