Prizm L4-1600cc 1.6L DOHC VIN 5 (1989)
Technical Service Bulletin # 904436E
Date: 930401
Campaign - Engine Surge or Chuggle at Highway Speeds
Number: 90-443-6E
Section: 6E
Date: APRIL 1993
Corporate Bulletin No.: SPECIAL
ASE No.: A1, A8
Subject:
ENGINE SURGE/"CHUGGLE" AT HIGHWAY SPEEDS
Model and Year:
1989-90 Geo PRIZM
SPECIAL POLICY
General Motors has determined that certain 1989-90 Geo Prizm model vehicles may experience an engine surge/"chuggle" at highway driving speeds
above 45 miles per hour. This condition maybe initiated by a slight "lip-in" acceleration or by a deceleration "coast" condition. The surge/"chuggle" may
range from a discrete, but annoying, "bump" lasting a second or less, to a long term bucking sensation lasting for a prolonged period of time.
Vehicles Involved
Involved are certain 1989-90 Geo Prizm model vehicles built within the following VIN breakpoints and which exceed the mileage limitation of the
vehicles Emission Warranty:
SPECIAL POLICY ADJUSTMENT:
This Special Policy covers the condition described above, regardless of ownership, until April 8, 1994 for vehicles which have exceeded the mileage
limitation of the Emission Warranty. Correction at no charge to the customer will consist of installing a new Manifold Absolute Pressure (MAP) wiring
harness connector and sensor.
NOTICE
ANY VEHICLE EXPERIENCING THIS CONDITION BUT WHICH IS STILL UNDER THE MILEAGE REQUIREMENTS OF THE EMISSION
WARRANTY SHOULD ALSO BE REPAIRED FOLLOWING THE PROCEDURES IN THIS BULLETIN. HOWEVER, CLAIM COVERAGE FOR
THESE VEHICLES WILL BE UNDER THE STANDARD EMISSION WARRANTY. LABOR OPERATIONS FOR BOTH SITUATIONS ARE
GIVEN IN THIS BULLETIN.
This "Special Policy Adjustment Bulletin" should be filed in your "Special Policy Adjustment Bulletins" binder furnished to dealers by General Motors.
REIMBURSEMENT:
Customer claims for reimbursement on previously paid repairs to correct an engine surge/"chuggle" condition are to be submitted by October 8, 1993
according to the forms and instructions included in this bulletin (additional copies to be reproduced locally - the time limitation for presenting the
original paid receipt may be longer depending upon the law in your state). Owners must submit original documentation which reasonably confirms the
amount of unreimbursed repair expense(s), a description of the repair, and the person or entity performing the repair.
OWNER NOTIFICATION:
Owners will be notified of this Special Policy by Chevrolet Motor Division (see copy of owner letter included with this bulletin).
PARTS INFORMATION:
