2010 Cadillac Truck Escalade EXT AWD V8-6.2L Technical Service Bulletin # 05-06-04-022G Date: 101027

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Technical Service Bulletin # 05-06-04-022G Date: 101027

Fuel System - TOP TIER Detergent Gasoline (Canada)

INFORMATION

Bulletin No.: 05-06-04-022G

Date: October 27, 2010

Subject: TOP TIER Detergent Gasoline Information and Available Brands (Deposits, Fuel Economy, No Start, Power, Performance, Stall

Concerns) - Canada ONLY

Models:

2011 and Prior GM Passenger Cars and Trucks (Canada Only)

Supercede:

This bulletin is being revised to update the model years and include an additional gasoline brand as a TOP TIER source. Please discard Corporate

Bulletin Number 05-06-04-022F (Section 06 - Engine/Propulsion System). In the U.S., refer to the latest version of Corporate Bulletin Number

04-06-04-047I.

A new class of fuel called TOP TIER Detergent Gasoline is appearing at retail stations of some fuel marketers. This gasoline meets detergency

standards developed by six automotive companies. All vehicles will benefit from using TOP TIER Detergent Gasoline over gasoline containing the

"Lowest Additive Concentration" recommended by the Canadian General Standards Board (CGSB). Those vehicles that have experienced deposit

related concerns may especially benefit from use of TOP TIER Detergent Gasoline.

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 340

Intake valve: 16,093 km (10,000 mi) with TOP TIER Detergent Gasoline

Intake valve: 16,093 km (10,000 mi) with Minimum Additive recommended by the CGSB

Top Tier Fuel Availability

Chevron was the first to offer TOP TIER Detergent Gasoline in Canada. Shell became the first national gasoline retailer to offer TOP TIER

Detergent Gasoline across Canada. Petro-Canada began offering TOP TIER Detergent Gasoline nationally as of October 1, 2006. Sunoco began

offering TOP TIER Detergent Gasoline in March of 2007. Esso began offering TOP TIER Detergent Gasoline in May of 2010.

Gasoline Brands That Currently Meet TOP TIER Detergent Gasoline Standards

The following gasoline brands meet the TOP TIER Detergent Gasoline Standards in all octane grades :

- Chevron Canada (markets in British Columbia and western Alberta)

- Shell Canada (nationally)

- Petro-Canada (nationally)

- Sunoco-Canada (Ontario)

- Esso-Canada (nationally)

What is TOP TIER Detergent Gasoline?

TOP TIER Detergent Gasoline is a new class of gasoline with enhanced detergency and no metallic additives. It meets new, voluntary deposit

control standards developed by six automotive companies that exceed the detergent recommendations of Canadian standards and does not contain

metallic additives, which can damage vehicle emission control components.

Where Can TOP TIER Detergent Gasoline Be Purchased?

The TOP TIER program began in the U.S. and Canada on May 3, 2004. Some fuel marketers have already joined and introduced TOP TIER

Detergent Gasoline. This is a voluntary program and not all fuel marketers will offer this product. Once fuel marketers make public announcements,

they will appear on a list of brands that meet the TOP TIER standards.

Who developed TOP TIER Detergent Gasoline standards?

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 341

TOP TIER Detergent Gasoline standards were developed by six automotive companies: BMW, General Motors, Honda, Toyota, Volkswagen and

Audi.

Why was TOP TIER Detergent Gasoline developed?

TOP TIER Detergent Gasoline was developed to increase the level of detergent additive in gasoline. In the U.S., government regulations require

that all gasoline sold in the U.S. contain a detergent additive. However, the requirement is minimal and in many cases, is not sufficient to keep

engines clean. In Canada, gasoline standards recommend adherence to U.S. detergency requirements but do not require it. In fact, many brands of

gasoline in Canada do not contain any detergent additive. In order to meet TOP TIER Detergent Gasoline standards, a higher level of detergent is

needed than what is required or recommended, and no metallic additives are allowed. Also, TOP TIER was developed to give fuel marketers the

opportunity to differentiate their product.

Why did the six automotive companies join together to develop TOP TIER?

All six corporations recognized the benefits to both the vehicle and the consumer. Also, joining together emphasized that low detergency and the

intentional addition of metallic additives is an issue of concern to several automotive companies.

What are the benefits of TOP TIER Detergent Gasoline?

TOP TIER Detergent Gasoline will help keep engines cleaner than gasoline containing the "Lowest Additive Concentration" recommended by

Canadian standards. Clean engines help provide optimal fuel economy and engine performance, and also provide reduced emissions. Also, the use

of TOP TIER Detergent Gasoline will help reduce deposit related concerns.

Who should use TOP TIER Detergent Gasoline?

All vehicles will benefit from using TOP TIER Detergent Gasoline over gasoline containing the "Lowest Additive Concentration" recommended by

Canadian standards. Those vehicles that have experienced deposit related concerns may especially benefit from use of TOP TIER Detergent

Gasoline. More information on TOP TIER Detergent Gasoline can be found at this website, http://www.toptiergas.com/.