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Prev Professional Automotive Repair Technical Discussions for May 22, 2015
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Open Help Requests for GM
Help Request Answers
2003 Chevrolet Express 2500 4.8L No communication VIN: 1GCGG25V03
I have this van in for inspection. I can not communicate with vehicle via scan tool or inspection computer. I have checked powers and grounds all are good. At DLC pin 16 showing battery voltage, 4 and 5 show good ground with no drop, pin 2, our serial data lin...
2009 Chevrolet Silverado 2500 HD WT 6.0L Left Turn Signal VIN: 1GCHK43K89
Ok I obviously don't have a good working understanding of how the electrical system on this truck works. I have interior fuse (#6-LT Stop Turn) that blows every time I turn on the left turn signal. Ive unplugged the front head light assembly, the tail light as...
2011 Chevrolet Aveo LS 1.6L Cam And Crank Coorelation VIN: KL1TD5DE7B
After timing belt replacement the engine light cam on with a code p0017. We took it back apart down to the belt and found the exhaust cam was 1 tooth off. Reset timing and put it back together and now is setting a p0016 code and has a slight rough idle. Just n...
2012 Chevrolet Captiva Sport LS 2.4L Cuts out, MIL Lamp on VIN: 3GNAL2EK7C
Good morning all Customer took this vehicle to autozone and they told her it needed a throttle body, I came up with these codes ,but she insisted on throttle body so I replaced throttle body with one from a dealer,asked about warranty on old one and they said ... Trouble codes: P2128, P2138
2007 GMC Sierra 3500 Classic SLT 6.6L motor VIN: 1GTHK33D87
Tapping noise from engine area all the time. Noise does seem at time to be very little after warm up. Vehicle runs fine. Does not misfire or smoke. Noise is not a double tap as when injectors are going out. I ran my scanner and tried to cancel and isolate the ...

Fixes & Summaries for GM
Fix/Summary Answers
2004 Chevrolet Epica LS 2.5L Poor Idle Quality, Stall VIN: KL1VB52L44
I believe I have found the cause affecting the idle. I entered the vehicle as a 2004 Suzuki Verona 2.5L which allowed me to get in the factory side of things. I ended up finding several codes in the TCM & ECM the didn't come up in Global. P0700, P1673, P167... Trouble codes: P0121 (Throttle position A circuit range/performance), P1512 (Idle Speed Control ISC System).
2004 Chevrolet Aveo 1.6L Misfire VIN: KL1TD62644
Got a new Gates belt. I see why these belts has to be changed at 60,000 miles. They can strink or stretch. We kept working till we got marks perfect and turned 2 times loosened water pump reset to tighten tensioner to the notch. Checked compression and it's 15... Trouble codes: P0300 (Missfire), P0420.
2004 Chevrolet Trailblazer EXT LT 4.2L transfer case VIN: 1GNET16574
Transfer case had 2 bad bearings letting shaft move back and forth in case. customer went with a reman case
2007 Pontiac Torrent 3.4L Converter VIN: 2CKDL73F77
I had no luck with vehicle I im closing this post for now if have any important info I will update the post. thank you
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