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Prev Professional Automotive Repair Technical Discussions for November 21, 2013
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
2008 Buick Lucerne CXS 4.6L Abs VIN: 1G4HE57Y38
The car was in back in Sept, for same code. I haven't got it act up for me. The freeze frame shows the LF 42MPH and the other wheels showed 62mph. The customer stated the he was driving on the highway when the car just jerked to the right very hard. The Tracti...
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2002 Chevrolet Malibu 3.1L rack & pinion VIN: 1G1ND52J72
car came in for alignment steering wheel off center. drive car wheel is almost upside down find bent l/f lower controll arm replaced it nno change in wheel position on align rack with wheel straight have over 8 degrees of toe.with wheel where it is when drivin...
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2004 Chevrolet Suburban 1500 LS 5.3L Sensor relearn VIN: 3GNFK16Z24
Vehicle came in with tpms light on, found LF sensor dead. Replaced sensor and now can read the data with mac tools tpms tool, but cannot get vehicle to go into learn mode. Tried the light switch and pressure methods of activating relearn mode and no horn chirp...
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2005 Chevrolet Express 3500 LS 4.8L Misfire, MIL Lamp on VIN: 1GCHG35V35
this van originally started setting codes for a misfire about 3 months ago (p0300- counting misfires on1,5,6,8 which are all opposite in the firing order {[...]}). it appeared to be in need of a tune up, so we replaced the plugs and wires (coil near plug). ... Trouble codes: P0300
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2006 Chevrolet Silverado 3500 LT 6.6L srs VIN: 1GCJC33D76
Truck came in for front brake pads and steering column shaft. After repairs service airbag warning pops up. Pulled codes B0024, B0026. Driver frontal deployment loop stage 1., out of range and open. I have replaced these steering column shafts in past with no ...
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2007 Chevrolet Equinox LT 3.4L Stabilitrak light, speedometer VIN: 2CNDL63F97
This vehicle has had intermittent speedometer issues (stops working)and stabilitrak intermittant light on dash with no codes. Checked speed inputs from ABS module, PCM, and Instument Panel and haven't yet seen a problem. The customer states happens infrequentl...
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2007 Chevrolet Avalanche LTZ 5.3L lf strut VIN: 3GNFK12307
Came in for a rubbing noise from suspension. After much time checking control arms, ball joints, tie rods, stabilizer was able to isolate it down to coming from within the strut. Replace the strut and during replacement broke the short 90 degree connector that...
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1997 Oldsmobile Achieva SL 2.4L abs VIN: 1G3NL52T2V
This car came to me from another shop that could not fix abs light. I found the module was dead no com. Replaced module now it comunicates and sets lf wheel speed codes found bad wires replaced harness. Now sets lf variation codes replaced lf speed sensor took...
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2000 Pontiac Bonneville SE 3.8L Poor Idle Quality, Misfire VIN: 1G2HX54K1Y
Hello, This car came in for a overheat and died. Found the coolant leak and it failed a block test with running very rough. Customer opted to pull heads and they pressure checked OK, gasket was damaged. Put it all back together and now I have a misfire on cyli... Trouble codes: P0300
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Fixes & Summaries for GM
Fix/Summary Answers
2005 Buick LaCrosse CX 3.8L MIL Lamp on, Reduce engine power VIN: 2G4WC53295
I purchased a new throttle body plastic connector and terminals and soldered on new terminals with the new plastic connector. I lengthened the wires a few inches also because after cutting off the old connector it would have been too short. It was very time co... Trouble codes: P1516 (TAC Position Performance), P0411 (Secondary Air Injection).
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1979 Cadillac DeVille 7.0L heater VIN: 6D47S99120
Morning All, Thanks for the help- found the switch at the right front of the head and grounded it, heat came back. Looking for a switch, but for the time being I grounded the wire to the intake. Thanks again Steve [...]
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2002 Chevrolet Impala 3.4L engine swap VIN: 2G1WF52E92
This vehicle is fixed.I swapped the cam from a 2002 3.4 and the cam sensor and the intake{upper and lower} and it runs perfectly.I got stuck with this engine swap because the original engine started knocking after the crank/cam relearn.Come to find out the eng...
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2006 Chevrolet Impala LTZ 3.9L No Start
Wasn't sure whether or to put this under fixed or not fixed. After driving the customers car for three days (customer's request), I duplicated the problem only once. Being such an intermittent condition we will just have to wait and see what happens. I couldn'... Trouble codes: P0513 (p1682-), P1682.
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2013 Chevrolet Impala LT 3.6L front impact sensors VIN: 2G1WG5E35D
Thanks to all who replied. My intention was to affirm my suspicion of the SDM needing programming after having done personal research. Upon recommendation the car lot had a programming guy come out and program the new SDM which resolved the issue and both dt...
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2000 Oldsmobile Alero GL 2.4L Battery VIN: 1G3NL52TXY
Thanks everyone for your patience and sorry about the delay. The concern was intermittent and i could not get it to act up so i let the the customer take the vehicle and i have yet to here anything from them. thanks for all your suggestions and thanks you for ...
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2004 Pontiac Grand Prix GTP 3.8L Abs VIN: 2G2WR524X4
Well this is one we don't quite understand and sorry for any missing information. What we found is that the engine never did the typical idle flare on start up. The throttle plates were coked with carbon. After cleaning the throttle plates and confirming prope...
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