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Prev Professional Automotive Repair Technical Discussions for June 17, 2014
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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 Engine VIN: 1G4HE57Y98
Good day. I have a Northstar 4.6 litre that is overheating at idle and slower speeds. Coolant level was good. Performed a test for exhaust gases in the coolant. Initially it turned positive and then it went back to negative after a minute or so. Initially the...
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1999 Cadillac Seville SLS 4.6L No Start VIN: 1G6KS54Y7X
vehicle came in with ck engine light and cus say speedometer reading wrong so we found p0503 and p0440 code after we replace so speed sensor and the fuel tank pressure sensor then we clear the code and then try to start,vehicle crank but would not start we get... Trouble codes: P0440, P0503
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2004 Cadillac SRX 4.6L Missfires VIN: 1GYDE63A54
Had these codes when we first got the vehicle. p0261 Inj 1 Low V. P0279 Inj 7 low V. p0273 Inj 5 Low V. p2300 coil 1 low V. p2318 Ign Coil 7 Low V. P0351 Coil 3 Circuit P0357 Coil 7 Circuit p0353 Coil 3 Circuit p2312 Coil 5 Low V. p0355 Coil 5 Circuit p0356 Co...
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1995 Chevrolet S10 2.2L no reverse VIN: 1GCCS1447S
I determined the problem was mechanical without pulling codes(mistake # 1)as the MIL wasn't on and the reverse input clutch was out so after a overhaul and replace the reverse input clutch and the forward sprag assembly(it was locked up)and reinstalling trany ...
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1998 Chevrolet Cavalier 2.2L MIL Lamp on VIN: 3G1JC5242W
Greeting to all the awesome folks at iATN. I have what I hope to be a simple issue. This Cavalier came to me after several people have been trying to get rid of this P0401 code. All previous repair history is given as per customer. I have done nothing to this ... Trouble codes: P0401 (EGR flow insufficient)
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2005 Chevrolet Trailblazer EXT LT 5.3L No Start VIN: 1GNET16M85
HELLO everyone , thanks in advance for any help. I was told that the customer came out one morning and this vehicle would crank over but not start. after that it ended up at a shop who replaced the crank sensor twice, a used computer then replaced the engine c... Trouble codes: P0335 (Crankshaft sensor circuit)
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2006 Chevrolet Equinox LT 3.4L A/C, Bcm, Pcm VIN: 2CNDL63F06
Just purchased vehicle two weeks ago from a customer. Was in a while ago (2 months ago) for a no start which ended up being fuel pump fuse. Last Saturday the rear wiper started all on it's own - I pulled the relay, the next day it was fine. Next the power door...
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2006 Chevrolet Malibu LT 2.2L eng temp VIN: 1G1ZT51F66
the temp gage will read hot not red hot scan tool reads around 240 F. Load tested ECT circuit, only dropping .12V. No DTC's, not boiling over. Temperature with infrared only reads around 210 at thermostat housing. Both cooling fans will turn on when temp gauge...
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2010 Chevrolet Corvette 6.2L MIL Lamp on VIN: 1G1YD2DW2A
this is my son-in-law's car. he bought it new in california even though he lives in illinois. they flew out and picked it up and drove it back. it was the only place he could find the car he wanted. since he got it he has had a series of electrical problems, n... Trouble codes: P0641 (5 volt reference circuit A)
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2002 GMC Envoy SLE 4.2L power loss in revers VIN: 1GKDT13S02
Vehicle came in with bad idle, very intermittent power loss, and wouldn't push a hill in reverse with light trailer load. No codes were present in any system. We were able to duplicate the power loss and it was identical to throttle body problems that we have ...
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2007 GMC Yukon XL 2500 SLE 6.0L a/c temp and engine temp VIN: 1GKGC26K97
running down the road the vehicle runs perfectly eng temp at 210 and ac will blow at 42 degrees in side. But the moment you stop at a light, the a/c will go to 68 degrees and the vehicle temp will start to climb. customer overheated engine once before he broug...
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2009 GMC Savana 3500 6.0L Charging VIN: 1GDJG31K49
Is there a pcm or bcm falash to solve this?
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1993 Oldsmobile 88 Royale 3.8L No Spark VIN: 1G3HN53L3P
This car died while driving. It cranks but no spark or injector pulse, I checked the crank sensor (both the 3x and 18x) signal to ICM and it is good, the cam sensor is also good to the ICM. I do not have a Signal out to PCM on the reference pulse high or low o...
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2009 Saturn Vue Red Line 3.6L Steering VIN: 3GSDL03739
Customer complaint is power steering is very tight especially off idle. The steering seems to work normally at idle but when you raise the rpms, the steering gets very tight. I removed and cleaned the reservoir because there is a screen in it. The fluid did no...
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Fixes & Summaries for GM
Fix/Summary Answers
1992 Chevrolet K2500 Cheyenne 6.5L Converter VIN: 1GCGK24F2N
Thanks for the replies, although most was for all systems that were previously tested as stated in my post. Fix was engine RPM sensor on the back of the engine cutting out when hot. Scan data did not always show this, but while backprobed it showed a poor si...
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1998 Chevrolet Blazer 4.3L in and out of overdrive VIN: 1GNDT13W9W
This is one of those situations where if I could give the customer a firm diagnosis with a guaranteed repair they would do it, but they dont want to just nickel and dime trying to fix it. They are going to run it for a while then trade it off... Thank you for ...
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2009 Chevrolet HHR LS 2.2L A/C Drain VIN: 3GNCA13BX9
sorry for the delay on closing.. very busy around here... The problem that I found was self induced and I do apolagize for waisting your time. On the first tear-down, and yes I did pull it apart a second time. What I did wrong wasto make the drian hole to...
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2007 GMC Sierra 1500 WT 5.3L transmission or transfer case VIN: 3GTEK13M17
I only recieved 4 replies on this vehicle. It only acts up a few times a week for the customer and each time it seems like it is when they come to a stop (or almost to a stop, they dont have to stop completely) and then pull out. It does it for a second then i...
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2008 GMC Sierra 2500 HD WT 6.6L Trailer brakes VIN: 1GTHK23668
THE PROBLEM WAS IN THE TRAILER.I DIDNT REALIZE THAT THE TRUCK SENT A FLASHING SIGNAL FROM THE BRAKE WIRE UNTIL IT SEEN A COMPLETE CIRCUIT.THER WAS A BROKEN WIRE ON THE RT SIDE, THANK YOU FOR THE INFO. KEITH
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2011 GMC Sierra 1500 SLE 5.3L no communication VIN: 1GTR1TE03B
well, I never did find the problem with this truck. and I do apologize for taking so long. that tsb 12-08-57-001, did not help me at all. I ended up sending it to the dealer who called me and said it needed three new computers. well...customer did not see that...
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2004 Oldsmobile Alero GLS 3.4L No Start VIN: 1G3NF52E14
AS ALWAYS, THANKS TO ALL FOR THEIR DUE DILLIGENCE, IT SEEMS TOM LEMIEZ & PATRICK [...] HIT IT ON THE HEAD! OIL PRESSURE SENDER WAS INTERNALLY SHORTED OUT, AGAIN PROBLEM WOULD COME & GO, BUT I REPLACED IT AND I AM PRETTY CONFIDENT THE PROBLEM IS SOLVED. BRAVO...
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