GM Service Manual Online
For 1990-2009 cars only

If your vehicle includes a winter cover, it will enhance heater performance and will reduce the amount of time it takes to warm the inside of your vehicle in extremely cold conditions (below 0°F (-18°C)). The winter cover installs over the front bumper of your vehicle and restricts the air flowing to the engine compartment by covering the radiator grille.


Object Number: 811865  Size: B3

Usage Guidelines

The winter cover should only be used while operating your vehicle in extremely cold temperatures. In these temperatures, the vehicle does not need a large amount of air to properly cool the engine. During periods of operation when more airflow is required to cool the vehicle, the winter cover should not be used. The following usage guidelines will allow adequate airflow for proper radiator grille and air cooler performance:

    • Do not use the winter cover when temperatures are expected to be above 32°F (0°C). Use of the cover in these conditions could cause your vehicle to overheat. If this happens while the cover is being used, remove the cover.
    • Do not use the winter cover if towing a trailer. The added power needed to tow a trailer requires the radiator grille to have full airflow under all conditions. Your vehicle may overheat if the cover is used while towing a trailer.
    • Do not modify the cover. The winter cover does not cover some sections of the front of the vehicle because these openings are needed to provide enough airflow to the radiator grille and air cooler in extremely cold temperatures.
    • When the winter cover is used, the temperature sensor found on the inside rearview mirror will not function properly. The temperature that is shown will be incorrect.

Installation Instructions

The following instructions explain how to install and remove your vehicle's winter cover. When installing or removing the cover please refer to the "Usage Guidelines" mentioned previously. When you first try to fit the cover it may appear to be undersized. This is due to the nature of the special vinyl, which will stretch during installation to ensure a tight fit. For this reason, the initial installation of the cover is best performed when the winter cover is warm. If you are required to use a front license plate, simply cut the black stitches on the back of the patch.

Grille Cover Installation

  1. Pre-bend all the small black tabs into the shape of a J.
  2. Remove the four push pins and slide them through each of the pre-punched tabs.
  3. Install the four push pins into the grille.
  4. Hook all the tabs to the edge of the grille.
  5. Fasten the snaps.

Lower Cover Installation

  1. Pre-bend all of the small black tabs into the shape of a J.

  2. Object Number: 811867  Size: A3
  3. Fasten each tab to edge of the bumper, as illustrated.

To remove the winter cover, reverse the steps listed previously.