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Prev Professional Automotive Repair Technical Discussions for July 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
1980 Cadillac Eldorado Biarritz 6.0L No Start, Hesitation VIN: 6L579AE604
First of all I can not believe I am working on this relic... But you know the story, its a good customer, the car is extremely clean, low miles. It is a Regal Coach, from what I understand 1 of 5 ever built. Engine runs strong most of the time, plenty of power... Trouble codes: 34 (Unknown)
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1999 Cadillac Eldorado ESC 4.6L Performance VIN: 1G6EL12Y6X
This has me baffled. low side pressure seems high to me at 50-60. Low side line will sweat, 50 degrees with temp gun, high side line feels warm. my thought is there is an internal refrigerant flow issue in the evap core. But how do I prove this with out diggin...
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1994 Chevrolet Blazer 5.7L No Start VIN: 1GNEK18K4R
Hi iant members this is my case truck wont start unles i rotate distributor to advance posición once it starts i have to retard timing back again if i disconect spout connector engine shuts off se we replaced a good known ecm and distributor from another truck...
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2003 Chevrolet Express 2500 5.3L No Start VIN: 1GCFG25T13
I have a real hair puller here. This van is a cranks/no start. Security telltale DOES NOT illuminate. No DTCs in ECM or BCM. Can communicate with all modules. Can command telltale on in IPC. Passlock cyl. voltage = 3.2 volts. ECM shows VTD fuel enable=No. All ... Trouble codes: U1000 (In SDM Class II data link malfunction)
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2005 Chevrolet Trailblazer LS 4.2L No Start, start & dies @ times VIN: 1GNES16S85
Back w/ another problem (challenge). I've been working on this for a couple of days trying to figure why it don't start. This is what i have done: a. All fuses are good includig PCM I fuse. b. New fuel pump and pressure is at 60 psi koeo. c. Spark is good, che...
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2006 Chevrolet Silverado 2500 HD LS 6.0L Steering VIN: 1GCEK19B66
I ran a check list of all the front end parts associated with this issue including the steering column / intermediate shaft. The left front toe was slightly out of adjustment but did not make a difference. Any help would be appreciated, thank you for your time...
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2006 GMC Sierra 1500 SL 4.3L brakes VIN: 1GTEC14X76
Thanks for any suggestions you can give. I had this Sierra come in the shop today with a complaint of loss of brake fluid. It turns out the line going from the master cylinder to the ABS pump was rusted out & leaking under the truck. Obviously the pedal was no...
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Fixes & Summaries for GM
Fix/Summary Answers
2007 Chevrolet Suburban 1500 LT 5.3L Front Struts VIN: 3GNFC16087
This one is fixed. Turns out that I had two bad struts right out of the box from the dealership! Truck drives over bumps a whole lot smoother now.
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2008 Chevrolet Equinox LTZ 3.4L MIL Lamp on VIN: 2CNDL33F28
Fixed! Just about everyone agreed that an OE EGR valve was the way to go, and that's exactly what fixed it. The OE valve never chattered, but I could swap the BWD valve back in and have it act up on demand. Yet another example of why NEW is meaningless any mor... Trouble codes: P0404 (Exhaust Gas Recirculation EGR Open Position Performance), C0561 (Invalid Serial Data Received English Theres a powertrain code stored in the PCM go fix it).
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2010 Chevrolet Tahoe LS 5.3L Unknown VIN: 1GNUCAE03A
IM GONNA CLOSE THIS AS FIXED. THE CUSTOMER JUST CALLED AFTER A COUPLE WEEKS AND SHE HASNT HAD ANY PROBLEMS OUT OF IT YET. NEW NEGATIVE BATTERY CABLE FIXED IT. STILL NOT SURE HOW IT WOULD HAVE GOTTEN PINCHED BETWEEN FRAME AND BODY MOUNT. O WELL. THANKS FOR THE ...
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2008 Pontiac Grand Prix 3.8L no 1st or 4th
Thanks for the help, first off guess glitch with scan tool it would pull codes but not data tried my new one communicated with no problem. When my guy pulled valve body 1st time while reinstalling pump put wrong bolt in pump and sheared teeth on reluctor whee...
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2009 Pontiac Solstice 2.4L compressor VIN: 1G2MN35B49
Thanks to all that replied. Almost all of you suggested condenser or fan problems causing high pressure. Condenser seemed clean, and cooling fan ran at high speed. After closer inspection through the "small and very low to the ground grille opening",it appeare...
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