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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for May 31, 2007
International Automotive Technicians' Network (iATN) - Members Only
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Open Help Requests for GM
Help Request Answers
1995 Buick Riviera 3.8L Hesitation, Stall VIN: 1G4GD2213S
the car has a slight misfire under load and hesitation. ign module was put on helped some with the hesation but it was still there. i put a cam sensor in no change but now when i go to start it. it will stall. i try to start it and about 3 times it will start ... Trouble codes: P1670 (quad driver 4)
2002 Buick Rendezvous CX 3.4L Accessories VIN: 3G5DB03E22
Happy Memorial Day guys!Here goes this one-the vehicle was towed in Friday with a no start/dead battery complaint. After an automatic charge sequence with my Snap on D-tec I found the battery to have only 157 cca's available so I replaced it with a new Delco b...
1997 Cadillac DeVille 4.6L SRS side airbags left/right VIN: 1G6KD52Y8V
Cadillac men... I have a 1997 DeVille with Side Airbag Malfunction codes B1147 & B1148. Very intermittent and I have nothing to go on. My iATN search turned up nothing and scan data on Mastertech,Mentor and Modis have nothing to offer.GM has a "Product Safety ...
1997 Cadillac DeVille 4.6L a/c compressor VIN: 1G6KD54Y6V
thanks for the help folkes I have this deville with a full a/c charge that cycles clutch on and off intermitantly under load . also while crusing a/c begins to get cold and then cycles off. we see no problems with the system other then this tnanks Tim
1998 Cadillac Catera 3.0L Misfire, MIL Lamp on VIN: W06VR52R9W
missfire codes #1#2#3. also, codes had been cleared recently. changed plugs which had oil on them due to leaky valve cover gaskets (cust. does not want to spend $ to replace gaskets) cleared codes and still miss and light on immediatly. checked codes, got miss... Trouble codes: P0300 (multiple missfire), P0301 (p0302-), P0302 (p0303-), P0303
1988 Chevrolet Camaro 5.0L Stall VIN: 1G1FP21E2J
My problem wiht this engine is it will not idle most of the time. Will start run for a few seconds and then die. No change when holding throttle open slighty. Will Idle if you add slight amount of propane. Will idle everytime when map sensor is unplugged. Inst...
1990 Chevrolet Corvette 5.7L hvac VIN: 1G1YY2384L
when car is started at times the control head display shows dotand two dashes,fan blows out the defroster and there is no functions.once by unhooking the neg battery cable i was able to make it operate.mostdata does not show too much about this system.tried to...
1995 Chevrolet Monte Carlo Z34 3.4L First gear VIN: 2G1WX12XXS
You guys have helped tremendously in the past, hope you can on this one . We had a 95 Monte Carlo with a bad DOHC 3.4. We also had what we thought was a 96 Monte with a bad body but a good 3.1. Nobody bothered to check the VIN, turned out it was a 97. Disc...
1998 Chevrolet Camaro 3.8L speedodometer VIN: 2G1FP32K0W
now is my turn, i hook up tech 2 to see any code, no code, i take the vehicle test drive and watch the speed of the vehicle, computer show me how fast the vehicle move,i did check wiring system and do component test,no sign wiring problem,i try replace the com...
2001 Chevrolet Blazer LS 4.3L Automatic transfer case VIN: 1GNDT13W91
Is there something I'm overlooking? Any help would greatly be appreciated.
1999 GMC Savana 3500 5.7L poor power VIN: 1GTHG35R0X
this van is dangerous while entering traffic.In the service bay,it labors to increase rpm during snap-test.ignition scope shows lack of fuel at that time with fire line peak as high as kv volts (different cylinders at times). maf hz=25-26k. @ idle,increasing t...
1970 Pontiac Catalina 355CID Brake pressure VIN: 252390E636
Ok i don't understand why i'm haveing such a problem with this super simple brake system. I have replace master cylinder proportioning valve, wheel cylinders, and hardware as well as pads and shoes. The car came in with no brakes i mean NONE! replaced all abov...
1996 Pontiac Trans Sport 3.4L MIL Lamp on VIN: 1GMDU06E7T
Hello Group, This Trans Sport came in a few weeks ago with the MIL light on,They had stopped at Auto Zone to get there codes pulled for free, they found no communication at the data link connector .The fuel pump/fan control relay 1/data link connector fuse, ... Trouble codes: P0441 (evap system purge no flow), P1655
2002 Saturn L200 2.2L MIL Lamp on VIN: 1G8JU54F32
I checked all powers and grounds to BCM.Symtoms are as follows,dome lites flash and flicker,headlamps flash and flicker,instrument cluster guages work then don't work,security light flickers not flashes,shift lock will not release,tailights flickering,front ru... Trouble codes: U1064 (bcm data line lost)

Fixes & Summaries for GM
Fix/Summary Answers
2006 Buick Rendezvous CXL 3.5L restraint syste VIN: 3G5DA03L06
This customer has chosen not to spend any more money on this problem. I had some suggestions from others of things to double check, including a possible faulty SDM. I did not have any proof to confirm this. I had the Tech 2 telling me that the new SDM setup wa...
1989 Chevrolet C1500 Cheyenne 5.7L Mechanical VIN: 2GCEC14K9K
Hi guys thanks for all of the replies. most of you were correct in suggesting to check the front flex brake hoses. installed two new hoses and this fixed the pulling problem. problem was caUSED FROM THE RIGHT HOSE BUT I REPLACED BOTH ANYWAY.
1997 Chevrolet Cavalier 2.2L Accessories VIN: 1G1JL1245V
Thanks everyone for your help. I checked the ground wires under the battery tray. Cleaned them and reinstalled. Still had the problem. Checked other things and still have not been able to fix it at this point due to time. Thanks again.
1999 Chevrolet Express 1500 4.3L No Start VIN: 1GCEG15W8Y
most of you said fuel pump I replaced with gm unit now pressure will not drop when cranking and fires right up this is what I thought but showed so many other things that could cause this I wanted another opinion iatn is the best thanks to all
2000 Chevrolet Tahoe LT 5.3L ac/compressor VIN: 1GNEK13T5Y
I have found out that there was a problem with the orifice tubes plugging. Replacement of the compressor, orifice, and good flush. thanks.
2001 Chevrolet Impala LS 3.8L ABS Traction Control VIN: 2G1WH55K81
I would like to thank Gerry, Donald, Doug and James all for their input. I had tried almost everything you all suggested and nothing had worked. There wasn't any harness damage or wiring problem, but thanks Doug and Gerry for the advice. Also there was no prob...
2002 Chevrolet Venture LS 3.4L transfer case VIN: 1GNDV03E32
From our research we found that there are no parts available from the manufacture except for the rear unit. If the problem is in that (basically just bearings and a pinion gear) it can be repaired. If the problem is in the main unit it has to be replaced. None...
2005 Chevrolet Silverado 2500 HD 6.6L Poor Idle Quality, Surge VIN: 1GCHK23265
thanks everyone, the fuel pressure regulator was it. the wave form was obvious when we watched it on our modis. not to difficult to replace. removed alt & a/c. thanks again. iatn has never failed me.
1993 GMC Jimmy SLE 4.3L Poor Idle Quality, Poor Fuel Economy
This is not a vortex engine or a throttle body engine. After cleaning injectors twice the gas mileage improved and the rough idle became intermittent. Re scoped everything and found o2 sensor was reading rich at .8v and would not change if I pulled a vacuum ho...
2001 Oldsmobile Intrigue GX 3.5L Cuts out VIN: 1G3WH52HX1
Well I got a lot of responses, but the problem never happened again. I ended up cleaning/tightening all pcm grounds and returned it. We will see what happens. Thanky, Thanky, Thanky, Paul.
1991 Pontiac Grand Prix GT 3.4L Stall VIN: 1G2WP14X5M
Thanks for everyone that replied. Unfortunately we have not been able to fix this Pontiac yet but are still working on it in the shop. Good thing it is a good customer of ours and he said keep it as long as we need it. I would especially like to thank Chris,Le...
1995 Pontiac Grand Am SE 2.3L Excessive Emissions, Poor Idle Quality, Hesitation VIN: 1G2NE55D7S
Thanks to all who helped and sorry 4 long post time...Per many replies I rec'd...swapped 1/4 and 2/3 injectors and problem moved to cylinders 2/3...replaced all 4 injectors and runs well. Did ohm test all when hot and symptom occurring, none shorted...?? Withi... Trouble codes: 65 (Injector error).
2000 Pontiac Grand Am SE 3.4L No Start VIN: 1G2NF52E0Y
We are still waiting for the customer to come back to town, at that time we will try the suggestions. Thanks.
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