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Prev Professional Automotive Repair Technical Discussions for March 22, 2012
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Open Help Requests for GM
Help Request Answers
2005 Buick Terraza CXL 3.5L Abs,Tcs, Stab VIN: 5GADV33L25
Found that when going down the road with the scantool hooked up the vehicle began to go into a false skid/ABS activation after 10 miles of driving. I was recording the datastream when this occured and found that the yaw rate reading falsely went into 74 degree...
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2003 Cadillac DeVille 4.6L MIL Lamp on VIN: 1G6KD54Y83
This nightmare came to us from another shop. Car had a miss and check engine light was flashing with a P0300. Found sparkplug wells full of oil and insulator boots carbon tracked. We compression tested engine, replaced all sparkplugs, valve cover gaskets, and ... Trouble codes: P0300
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1996 Chevrolet S10 LS 2.2L Surge, MIL Lamp on VIN: 1GCCS1946T
Hi there guy's, I could sure use some of your advice and experience on determining what is wrong with this vehicle. The following vehicle has trouble code P0171=Fuel Trim System Lean. Freeze Frame Data is as followes: AF Ratio=14.6:1 Calc. Air Flow=36.73 g/s E... Trouble codes: P0171
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2000 Chevrolet Silverado 1500 5.3L No Start, Cuts out
sorry see related history
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2001 Chevrolet Cavalier 2.2L MIL Lamp on VIN: 1G1JC12451
Originally replaced rear main crank seal and rear camshaft plate seal. Vehicle came back with 2 codes - system too lean and oxygen sensor circuit codes. Found oxygen sensor stuck at 200 mv - replaced, cleared and tested at idle with no problems. Car came back ... Trouble codes: P0172 (System too rich bank 1)
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2001 Chevrolet Tahoe 5.3L Stall, extened crank VIN: 1GNEC13T01
tahoe will die sometimes hot or cold. and every other time you try to start it, it cranks for a while before it starts. replaced mass air flow under warranty and reading normal. flushed injectors again. ect and iat read within 4 degrees of each other on cold e... Trouble codes: P0101, P0300, P1133
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2001 Chevrolet Tahoe 5.3L Stall, extened crank VIN: 1GNEC13T01
tahoe will die sometimes hot or cold. and every other time you try to start it, it cranks for a while before it starts. replaced mass air flow under warranty and reading normal. flushed injectors again. ect and iat read within 4 degrees of each other on cold e... Trouble codes: P0101, P0300, P1133
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2002 Chevrolet Blazer LS 4.3L Hesitation, Poor Fuel Economy, MIL Lamp on, lack of power under VIN: 1GNDT13W52
my daughters car,it will not go away. she said on a long hill rpm's go way high,true. seems like it does not want to shift. call a tech at the trany shop,he said the shift is from the tpsensor. i own the same car i swapped the MAF sensors mines fine,hers still... Trouble codes: P0101
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2008 Chevrolet Silverado 3500 HD LT 6.0L backup alarm VIN: 1GBJC34K38
when Ignition is in the off position the alarm is active due to the fact that the LCM keeps all the lights active until the light sentry times out. Question, Is there better way to power the backup alarm other than using a tap to the backup light circuit? Co...
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1999 GMC Sierra 1500 SL 5.3L MIL Lamp on VIN: 1GTEK19T1X
this truck is testing my patience. it was brought to me with a missfire and MIL on with code p0300. miss fire count showed #6 with the most counts. found injector connector had been damaged. i replaced all 4 injector connectors on bank 2. (soldered connections... Trouble codes: P0171, P0174
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2005 GMC Sierra 2500 HD SLE 6.0L HVAC control VIN: 1GTHC23U85
did AVR test,replaced battery,had memory saver pluged in but it went dead during battery replacement,now the dual control automatic heating air conditioning system will only blow defrost no matter where you set mode control.Would appreciate any help,thanks Sco...
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2006 Pontiac Grand Prix 3.8L tempature indication VIN: 2G2WP55296
Greetings, Hope someone can help us on this one. Vehicle came in from an auction so we have no prior history on it. But initial problem was a heater core which was replaced. Now vehicles' tempature reading will read between half and 3/4 on the gauge and somet...
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2002 Saturn Vue 3.0L Right Rear Wheel VIN: 5GZCZ63B52
The right rear wheel will lock up just driving down the road without applying the brakes. It only happens occasionally. It takes 3 or 4 days of driving for it to occur. There are no codes stored in the ABS computer and no codes stored in any of the other compu...
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2005 Saturn Vue 2.2L Poor Idle Quality, Hesitation VIN: 5GZCZ43D65
this is a used vehicle we had sold it came in with check engine light on and runs rough. had code p2176a follow pinpoint test led to replace throttle body. we replaced throttle body. road tested seemed ok. we performed another road test and concern started aga... Trouble codes: P176
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Fixes & Summaries for GM
Fix/Summary Answers
1996 Buick Regal Custom 3.8L Cooling fans VIN: 2G4WB52K8T
Thanks for all the input. All of my service information says that one fan should engage at 212 deg, the other at 224. I had one engage at 224, and unplugged it to see if the other one would come on. It did at 230 degrees. I put in a new coolant temp sensor...
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1994 Chevrolet S10 Blazer Tahoe 4.3L Hesitation, Surge, Stall, Misfire VIN: 1GNDT13W2R
Well Gregory you were dead on.I smoke tested this vechicle twice with out a sign of leaks but after taping off the air inlets and putting a vacuum gage on the dipstick nailed it!!!Once the intake was rmove the bottom part on both gaskets were wasted.Man this o...
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1997 Chevrolet Venture LS 3.4L Surge, Misfire, MIL Lamp on VIN: 1GNDU03E4V
Well this one is going to be fixed, gonna do the head gasket,and check the cyl head,intake and plenum for cracks. Found coolant in #2 cylinder after a couple of cold soaks borrowed a boroscope and saw the top center of the piston clean as a whistle in an oval ... Trouble codes: P0300.
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2001 GMC Sierra 2500 HD SL 6.6L Excessive Emissions, Poor Idle Quality, Misfire VIN: 1GTHK23171
Thanks for the help - replies. I explained the repaires needed on the vehicle and options available . Vehicle left here for three weeks . Customer picked up vehicle and paid for Test & Inspect time, did not say or mention returning to finish repair. Trouble codes: P0202, P0204, P1261 (ECM detects circuit fault related to high voltage cylinders 146or7), P1262 (ECM detects circuit fault related to high voltage cylinders 235or8).
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