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Prev Professional Automotive Repair Technical Discussions for March 4, 2015
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Open Help Requests for GM
Help Request Answers
2006 Cadillac DTS 4.6L park assist sensor VIN: 1G6KD57YX6
car was brought to us with sensors and harness already replaced, codes 954,955, symptom 08, invalid signal lf outer,lf middle. tested signal wires at 7.8 volts, all the same, front and rear, no shorts to power or ground. replaced module, getting same codes.
1995 Chevrolet Camaro 3.4L No Start, no inj. pulse VIN: 2G1FP32S4S
OK guys I need some help here, this one has eatem my lunch and come back for dinner. This vehicle came in for stalling and not restarting after a short trip. When it originally came in it started and ran, not well, but enough to get it into the bay. It was thr... Trouble codes: 82 (3X signal malfunction)
2004 Chevrolet Trailblazer LS 4.2L Unknown VIN: 1GNDT13SX4
This vehicle will not get to operating temp. It came in with a P0128. I changed the thermostat twice. I have replaced the radiator cap and fan hub. The top radiator hose gets hot, the lower remains cool; this is after a 5-10 mile test drive. If I stop the fan ...
2005 Chevrolet Suburban 1500 Z71 5.3L Electronic VIN: 3GNFK16Z05
We replaced the ABS module because it was missing with new GM part. We cannot get it to program. We are using the CarDaq-plus and delco tech connect. I've called and talked to the help desk and they say it's a known issue with something to do with the BCM inte...
2009 Chevrolet Colorado WT 3.7L PCM Monitor Problem VIN: 1GCCS19E29
Thankyou in Advance for your help. I work as an Auto Electrician for the L.A.D.W.P., this vehicle is a D.W.P. fleet vehicle that was in our body shop for repairs. When I got it, the battery was dead and it needed a smog test. No problem with the battery, engin...
2013 Chevrolet Avalanche Black Diamond LS 5.3L radio VIN: 3GNMCFE04D
Quick easy question for you dealer GoodWrench guru's. Got this 2013 Avalanche that a used car lot asked me to program a used radio. I know some of the newer GM's will not let you put in used modules after 2010. I was told this was an '07 so I didn't take my MD...
2002 GMC Sierra 2500 HD SL 8.1L MIL Lamp on VIN: 1GTHK23GX2
Check engine light comes on and off on highway driving. Code po401. Does anyone know if the egr ports gets clogged on 8.1l engines and if it does where? do you have to remove intake manifold to clean out ports? Trouble codes: P0401
2004 GMC Sierra 3500 SLE 6.6L Alternator VIN: 1GTJK331X4
Gentlemen, Need advice about the charging system on this Duramax. Came in with red battery light on in dash, and message center saying 'battery not charging'. Checked for KOER voltage at hot post on alternator, 12.8 volts, same at battery positive. Checked f...
2006 Pontiac Grand Prix GT 3.8L Hesitation, Stall VIN: 2G2WR55496
Custo came in w/SES light, no other concerns. P0033 and P0301 were only existing codes. We were unable to duplicate the misfire. Custo declined replacement of supercharger solenoid. We replace plugs and wires due to mileage. After tune up car runs horrible. Bl... Trouble codes: P0033, P0108 (Map/Baro signal high), P0132 (02 signal high), P1106 (MAP circuit intermittant high)
2007 Pontiac G6 2.4L MIL Lamp on VIN: 1G2ZF58B87
cant get to run monitors for nysi because codes come right back also cannot run test on system with tech-2 because codes com right back Trouble codes: P0016, P0017
2009 Pontiac G6 GT 3.5L oil pan gasket VIN: 1G2ZH57N39
any shortcuts in removing the oil pan without seperating the engine and transaxle? Thank-you

Fixes & Summaries for GM
Fix/Summary Answers
2002 Chevrolet Trailblazer LT 4.2L MIL Lamp on VIN: 1GNDS13572
Thanks everyone for your assistance the pcm was the problem after putting the pieces of information you gave together it was found that sensor one and two earth failed and another workshop short circuited it to earth for the car to respond to acceleration wit... Trouble codes: P1275 (Accelerator Pedal posotion circuit -sensor 1).
2008 Chevrolet Silverado 1500 WT 5.3L Steering column VIN: 2GCEK13M98
Thank you to all who provided help. I have a new lower steering column bearing that I have not had time to replace yet. Thank you to those who sent me in that direction. I will update after I replace it.
2009 Chevrolet Express 2500 4.8L steering pull VIN: 1GCGG25C29
First of all thank you all for your help on this matter. Now to the meat and potatoes. I drove the vehicle on a flat road this morning and shut the vehicle off... still pulls hard right. Called the customer again to try and squeeze any info out of him and he f...
2011 Chevrolet Silverado 1500 LT 5.3L Oil Pressure VIN: 3GCPKSE37B
Thanks everybody for your help, Just to clarify we were using OEM sending units on this truck. We did change the Oil and filter with 10 w30 oil,customer has been driving this vehicle since and has not had the Mil come back on.I think it all comes back to oil ...
2006 Hummer H3 3.5L flywheel VIN: 5GTDN13676
Nobody in our town had the special tool except for the Chevy dealer. One of the techs at Chevy loaned us his tool and we bought his team lunch.
1997 Pontiac Grand Am SE 2.4L ecm VIN: 1G2NE52T3V
I tried the 30 minute relearn several time with no success. I was told to do a security relearn with a tech2 but that did not work, the tech2 did not give me that option. I removed the instrument cluster and disassembled it to check all solder joints and conne...
2008 Pontiac G6 2.4L power steering VIN: 1G2ZF57B78
Well, I got to thinking about not getting any codes out of the EPS when the radio display clearly stated "power steering" problem. I logged on and upgraded my laptop software, and bingo: steering wheel torque sensor popped up. So we called every parts store, a...
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