GM Repair Questions? Ask a Mechanic for Answers ASAP
Some customers may comment on the Service Engine Soon light becoming illuminated along with a severe reduction in engine power (limp home mode). Upon investigation, the technician may find DTCs P0202 and P2149 or P0207 and P2146 or P1294.
The injector connector circuits on cylinders 2 and 7 are not fully supported near the connector and are more susceptible to terminal breakage from engine vibration.
If published diagnostics lead to an injector connector, install the revised 90 degree connector and the harness support bracket from the service kit, P/N 98017958, using the following repair procedures.
Tighten Tighten the fuel injector harness bracket bolt to 10 N·m (89 lb in).
Tighten Tighten the glow plug harness connector nut to 2 N·m (18 lb in).
Tighten Tighten the injector harness bracket bolts to 20 N·m (15 lb ft).
Tighten Tighten the fuel filter assembly bolts to 20 N·m (15 lb ft).