Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2005 Cadillac XLRFACTORY OEM SERVICE PROCEDURE
Engine Controls (DTC P0134 To P0345)
- DTC P0134 or P0154
- DTC P0135 or P0155
- DTC P0137 or P0157
- DTC P0138 or P0158
- DTC P0139 or P0159
- DTC P0140 or P0160
- DTC P0141 or P0161
- DTC P0171 or P0174
- DTC P0172 or P0175
- DTC P0201-P0208
- DTC P0222
- DTC P0223
- DTC P0230
- DTC P0231
- DTC P0232
- DTC P0261, P0264, P0267, P0270, P0273, P0276, P0279, or P0282
- DTC P0262, P0265, P0268, P0271, P0274, P0277, P0280, or P0283
- DTC P0300
- DTC P0301-P0308
- DTC P0315
- DTC P0325 or P0330
- DTC P0326 or P0331
- DTC P0335
- DTC P0336
- DTC P0340 or P0345
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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