For 1990-2009 cars

# CODES 44/22 CHARTS 3,8,8H,11 REVISION DIAGNOSTIC CHART

Attached are six (6) revised EFI Diagnostic Charts. The affected charts are as follows:

EFI CHARTS

- Chart 'Code 44' - Chart 8H - Chart 11 - Chart 8 - Chart 3 - Chart 'Code 22'

These revisions should be inserted into the General Carline Information Manual (Section 6E2) and used until the permanent manual revisions are printed.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.