Technical Procedure

MASS AIR FLOW SENSOR:

1. Raise vehicle hood, cover fenders, and inspect MAF senser. Refer to illustration.

a. If the sensor has a white paint dot on it's side as shown, no further action is required except to apply a Campaign Identification Label.

b. If the sensor does not have a white dot, replace it with correct part furnished by Buick. Refer to Parts Information Section for correct part number usage.

Refer to Page 6E3-C1-8 in the 1986 Buick Chassis Service Manual for sensor replacement.

2. If the MAF sensor was replaced, start vehicle engine and note if there is a SES light "on" which would indicate incorrect wiring connection at the sensor. Correct as required and clear stored code.

CAMPAIGN IDENTIFICATION LABEL:

3. Install a Campaign Identification Label.

Each label provides a space to include the campaign number, the five
(5) digit dealer code of the dealer performing the campaign service, and the date vehicle was campaigned. This information may be inserted with a typewriter or ballpoint pen. When installing label, clean the surface of the radiator support tie bar. When installing label, clean the surface and apply the campaign label where it is readily visible.
4. Return sensor as follows on next page.
DISPOSITION OF MAF SENSOR (NEW OR REPLACED)

Replaced sensors must have a claim tag attached showing the repair order and the VIN of the vehicle from which it was removed. Return the replaced sensor in the carton the new one was received in, apply furnished merchandise return label over old mailing label and place in the mail. Postage will be paid by General Motors.

If the new sensor furnished was not required, it is also to be returned using furnished shipping label.