For 1990-2009 cars

If you find an error in a GM Service manual, or if you have a suggestion about a GM service manual, we want to hear from you.

When calling, be prepared with the following information:

• | Your name

• | The name of your dealership

• | The phone number of your dealership

• | The model year and the vehicle line

• | The publication part number, if present

• | The vehicle identification number of the vehicle on which you are working

• | The service category and page numbers

• | Any applicable electronic information element identification numbers

• | A descriptive explanation of your concern

The GM service manual phone personnel will respond to your concerns in the following ways:

• | By delivering your concern to the author of the information

• | By eliciting a response from the author

• | By supplying you with an answer to your concerns

For paper manual users: The GM service manual phone personnel will also explain how to send in examples or marked-up pages.

For Electronic Manual users: Be prepared to provide any applicable identification numbers pertaining to the electronic information in question.

The GM service manual comment telephone numbers do not provide technical assistance. For technical assistance, contact your regular technical assistance source.

### United States and Canada General Motors Dealer Employees

Please call the following number with your comments: 1-800-828-6860.

You may call Monday through Friday, 8 a.m.-8 p.m. Eastern Time. In order to send a fax, use the following number: 248-265-9327.

### Canada, French Speaking General Motors Dealer Employees

Please call the following number with your comments: 1-800-503-3222.

You may call Monday through Friday, 8 a.m.-5 p.m. Eastern Time. In order to send a fax, use the following number: 248-265-9327.

### International English Speaking General Motors Dealer Employees

Please call the following number with your comments: 248-265-0840.

You may call Monday through Friday, 8 a.m.-8 p.m. Eastern Time. In order to send a fax, use the following number: 248-265-9327.

### United States and Canadian Vehicle Owner/Operator

Vehicle owners or operators are encouraged to address their comments and concerns to the applicable Customer Assistance Center. The phone number and address of the Customer Assistance Center are in the Owner's Manual.