For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people.
Genuine GM parts have one of these marks:

California Proposition 65 WarningRadio Front Side Door Speaker Replacement
Radio Front Side Door Speaker Replacement
Callout
Component Name
Preliminary Procedure
Remove the front side door trim. Refer to Front
Side Door Trim Replacement.
1
Radio Front Side Door Speaker ...
Special Tools
Illustration
Tool Number/ Description
CH-161-B
DT-161-B
KM-161-B
J-22888-20A
Bearing Puller
CH-804
CH-49692
MKM-804
Tensioner
CH-39570
J-39570
...
Transmission Identification Information
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The code for the M32-6 transmission will be found on the back of the transmission
housing, above the axle shaft. In addition, an Alphacode sticker will be placed
on the cover of the differential.
Transmission type (M32) (1)
Design (2)
Engine family (3) ...