Important Information

Subject: Repeat DTC P0606 And P1780 Setting - keywords 00 01 02 03 04 05 DTC JB L81 MAF MIL P0606 P1780 reducedpwrmde reman saturn PIP3922 - (09/26/2006)

Models: 2000-2005 Saturn L series with L81 V6

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described.

Condition/Concern:
A technician may find codes P0606 and P1780 setting. They may state that they are not able to duplicate the concern. Tech may state that when the customer is driving they report a sudden loss of power, then no throttle response, and the warning indicators come on. Tech may also state that the ECM and MAF were replaced with no change.

Recommendation/Instructions:
These codes will set if the wrong MAF was installed on the vehicle previously. This being an intermittent code the MAF may work without any concerns initially. The retailer may not be aware of 2 different part number MAF's for 2000-05 L series with L81. Compounding this is the reman sticker may fall off and GM does not cross reference the Bosch part number to theirs. Any time these codes are setting have technician verify the correct MAF is installed using the reference below.

The part numbers are:
- 2000-03 90528435 Last 3 of Bosch # 184 (important because the reman sticker may be missing)
- 2004-05 24437651 Last 3 of Bosch # 087 (important because the reman sticker may be missing)

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

NOTE: GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these 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 your GM dealer for information on whether your vehicle may benefit from the information.