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Virginia Beach, VA
Alldata, Mitchell1, Motors, Identifix, sometimes on IATN
You should install new pump in clean system as a contaminated system can cause new pump to fail. If old pump is not pumping a all a shop with a flush machine can flush system before new pump is installed. If you need system flushed or pump installed please call Roy at 757-456-0722 and let him know if you would also like a FREE loaner vehicle while yours is being serviced.
Some of the Potential Causes Restricted Vacuum Line Canister Purge (CANP) Solenoid PF Sensor PF Sensor Circuit If you need this diagnosed call Roy 757-456-0722 also let him know if you need a free loaner vehicle while yours is being serviced
P1442 EVAP Vacuum Switch Circuit High Input During Key On Possible Causes Setting Conditions Vacuum switch signal circuit is open between switch and PCM Vacuum switch ground circuit open between switch and ground Vacuum switch has failed DTC P0106, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122 or P0123 not set; ECT and IAT sensors more than 41ºF at startup, and the difference between the startup ECT sensor and IAT signal more than 45ºF, system voltage at 11-16v, engine speed from 800-6,000 rpm, throttle angle over 14%, Purge duty cycle below 1%, and the PCM detected the EVAP Purge Switch indicated 12v (the switch is open) for 5 seconds. This code sets in 2 Trip(s). This code will turn on the MIL (Malfunction Indicator Lamp) If you need this diagnosed please call Roy at 757-456-0722 and let him know if you need a FREE loaner car while yours is being serviced.
That is usually a flow problem, air flow or coolant flow with multiple possible causes for each problem such as a restricted heater core or temperature blend door actuator. If you would like it diagnosed and repaired just call Roy 757-456-0722 and let him know if you also need a FREE loaner vehicle while yours is being serviced.
Most vehicles when set to any defroster position will also run the A/C compressor to help cool and condense moisture in the air before heating the air and blowing on your windshield (if air heated was not dry your windshield would fog up)
P04xx are emission related DTCs, really need VIN or vehicle info (Gas, diesel, 4cy, v-6, turbo, auto manual, ETC...????) some of the possibilities are: Leaking Evaporative Emission (EVAP) System Hose(s)/Line(s) Failed Gas Cap Seal Failed Leak Detection Pump (LDP) Vacuum Hose Defective N80 Canister Control Valve Dirty N80 Canister Control Valve Defective Carbon Canister Leaking Engine Vacuum Check gas cap for loose or bad seal first, I you want it diagnosed and repaired, call Roy 757-456-0722 and let him know if you would like a Free Loaner Vehicle.
You may have a problem with the idle speed control. When the engine load increase the idle speed should be maintained at idle (often when turning many models have a pressure switch in the steering system and when pump is working harder it will let the engine know to maintain speed) If this is too much for you to diagnose while you are still learning, you can call 757-456-0722 and ask for Roy or James and request a FREE loaner car while you have us diagnose yours.
You may be right, could be a security problem. Recommend before you get stranded to have diagnosed and repaired. We have GM TECH 2 as well as MDI diagnostic tools/programmers same as the Cadillac dealers and some great aftermarket tools they do not have. You can also request a FREE loaner vehicle while yours is being diagnosed and repaired ask for Roy or James 757-456-0722
Please call 757-456-0722 and ask for Roy or James, have your VIN ready and production date from the label at the drivers door opening. They will search recalls and TSB and let you know. If there are no defect recalls they can also look up the cost to replace and email you and estimate. When you chose to get the work done here you can also request a FREE loaner car 757-456-0722