GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2007 🢒 G6 🢒 Bulletins 🢒 DTC P2097 P2099 P2096 P2098 P0420 P0430 - keywords code dtc exhaust leak ly7 mil P0420 P0430 P2096 P2097 P2098 P2099 SES

DTC P2097 P2099 P2096 P2098 P0420 P0430 - keywords code dtc exhaust leak ly7 mil P0420 P0430 P2096 P2097 P2098 P2099 SES

Subject:DTC P2097, P2099. P2096, P2098, P0420, P0430

Models:2007 Buick LaCrosse/Allure
2007 Cadillac CTS STS SRX
2007 GMC Acadia
2007 Pontiac G6
2007 Saturn Aura Outlook
2008 Saturn Vue


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

Condition/Concern:

The customer may have a concern of the MIL being illuminated. The vehicle may a DTC P2097, P2099. P2096, P2098, P0420 or P0430

Recommendation/Instructions:

If following eSI diagnostics does not correct concern then this may be an exhaust leak. This leak may be very small and hard to locate. The ultrasonic leak detector J-41416 may assist in finding the leak. Be sure to check the seal between the exhaust pipe and converter. Also the welds around the HO2 sensor fitting may have pinholes.

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.