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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for July 6, 2004
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Open Help Requests for GM
Help Request Answers
1992 Buick LeSabre Custom 3.8L Cuts out, Stall VIN: 1G4HP53L8N
hello all, customer replaced the fuel pump, computer and ignition control module in an attempt to fix this problem. complaining of intermittent stalling at idle and going down the road. he said it usually takes about 20 minutes before it will recrank. everytim...
1997 Buick Riviera 3.8L downshift from overdrive with converter locked up. VIN: 1G4GD2214V
Hello,I have inherited a riviera with a 4t65e trans.Customer says that whe your driving in high gear,[...] or so,the car loses power.Upon driving the car what actually is happeng is as your cruising in high gear,with the tcc locked,you can slow down substan...
1984 Chevrolet C10 Suburban Custom 5.0L rear brakes VIN: 1G5EC16H9E
hello again. we have this "mystery" suburban. the vehicle came in with r.r. brake shoes wasted and drum. we installed new shoes, wheel cylinders, hardware, and r.r. drum. all seemed o.k. customer returned 1 month later approx 2,000 miles. r.r. brake worn out d...
1988 Chevrolet S10 2.5L Hesitation, Cuts out, Stall, MIL Lamp on
Customer brought us truck after being to numerous shops...truck bucks like a riding mechanical bull around [...]..he says it does it other times as well but I drove with the Snap-On 2500 scanner hooked up and it seemed right around 2500 everytime. Also, cus... Trouble codes: 44 (Lean Exhaust)
1993 Chevrolet S10 4.3L No Start, Cuts out, Stall VIN: 1GCCS19Z3P
this vehecile was towed into our shop with no start problem truck started when it arrived drove into bays where it ran for mabe 3 min and died checked baasics fire, fuel preasure etc.ran scanner no codes we had no spark or noid customer said he had problem ear...
1996 Chevrolet Astro 4.3L Hesitation, Stall VIN: 1GNEL19WXT
van has hesitation,worst cold, almost gone when hot.step on gas any degree from a crack to wide open and it falls on its face and pops out intake.o2 sensors go very lean for a split second as problem occurs. flushed injectors with no improvement.
1997 Chevrolet Venture LS 3.4L MIL Lamp on VIN: 1GNDU03E4V
code 1406 egr, I've replaced the egr and have clean passageway. With erg off has very large vacuum leak. (idles up and down) Driving down rd the egr ask for 40% but the voltage goes from .70 up to 4.70. It goes all over the place. I realy thought it had a wire... Trouble codes: 1406 (egr pintle)
2000 Chevrolet Suburban 2500 LT 6.0L compressor VIN: 3GNGK26U8Y
The AC compressor got so hot that the clutch and the switch in the back of the comp. were melted. I checked the orifice tube and it was full of filings, so I ordered a compressor, condenser, accumulater and orifice tube. I am thinking the expansion valve is fu...
2000 Chevrolet Blazer LS 4.3L MIL Lamp on VIN: 1GNDT13WGY
Hello Gm techs, This one came to me from another garage with a check engine light.When vehical first came To me I put the scanner on it and found the front o2 was dead.Removed the sensor and found that it was broken inside.I replaced the sensor and all Is fin... Trouble codes: P0410, P0463
2001 Chevrolet S10 4.3L Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1GCDT19WX1
Hello everyone, This truck has an intermittent problem. The symptoms it displays are: Cold start normal, once it warms up it idles normally, in gear or park. Once you drive it after a short while it will start to cut out at cruise but only occasionally, droppi... Trouble codes: P0171 (fuel trim system rich bank 1), P0174 (P0122- TPS circuit low voltage), P0122 (TPS circuit low voltage)
1994 GMC K1500 Sierra SL 5.7L timing VIN: 2GTEK19K4R
i just replaced the engine with a reman one and cannot find the wire to disconnect to put timing in bypass to be able to set timing. it is not next to the firewall, in the harness or under the fusible link/relay cover. also looked under dash by ecm and did not...
1997 GMC Jimmy SL 4.3L no start condition VIN: IGKDT13W8V
A few months ago truck was stalling once in a while did major tune up ,no codes in computer, customer said it always restarted. Now customer says once in a while truck will not start at all, he says when it does not start no dash lights come on on the dash whe...
2002 GMC Sierra 2500 6.0L steering box VIN: TGTEK19TX2
We have two of these GMC 4x4 with the same problem that started at aprox.70,[...].They developed a loud groaning noise that happens most of the time when turning into a parking spot but we can get it by turning the wheel quikly when parked with the eng...
1999 Oldsmobile Cutlass GL 3.1L cooling system VIN: 1G3NB52J4X
I have read in some of the archives here that the high speed fan should cycle on at 235 F and in this car i don't get high speed fans unless i unplug the temp sensor i see where a car had the ECM reflashed as a fix to this all grounds look good and the car wi...
1992 Pontiac Grand Am SE 3.3L No Start, Cuts out VIN: 1G2NE51N0N
this car came in on a hook no start check system found no codes and no spark replaced ign. modual now it starts runs for 10-12 min and stalls found at this point no spark and no inj. pulse let cool for 5-10 mins and starts and runs for 5-10 mins but stalls aft...

Fixes & Summaries for GM
Fix/Summary Answers
1992 Cadillac Seville 4.9L Lighting VIN: 1G6KS53B3N
tracked down problem to pass key decoder and replace instrument cluster car started and work fine. thanks for all tha help that was given on this project...
1995 Cadillac DeVille 4.9L lifters VIN: 1G6KD52B3S
Thanks for all the replies. A couple of guys I think Hit it right on the head.An oil galley plug missing stopping oil pressure from getting to top half of the engine.The customer walked in with this plug after I first went onto IATn.So when they come back fr...
1987 Chevrolet R10 Custom Deluxe 5.0L Stall VIN: 1GCER14H9H
Special thanks to Paut (jeepster) you know who you are. The problem was in fact incorrect parts. After having my local GM dealer run the VIN for me he came up with 2 options. We had both an incorrect switch and incorrect fuel switching valve. Change both and v...
1994 Chevrolet K2500 Suburban 6.5L No Start, Stall VIN: 1GNGK26F1R
thanks to all that replied. most were correct in that the injection module was the problem. brent recommended moving the module from engine heat, with a fabricated bracket the module now has a new home away from the valley and all the heat. again thanks for ev...
1995 Chevrolet Monte Carlo Z34 3.4L booster master cyl, unknown VIN: 2G1WX12X65
thanks to all for the help on this problem i advised the customer to return to the tire shop where the brakes were done and askwhat quality of parts were used and ask for oem. as i have not heard back from him i assume all is now well.thanks again for the assi...
2000 Chevrolet Silverado 1500 4.3L information center/gauges VIN: 1GCEC14WSY
Thanks to all who replied. I have replaced many GM ignition switches but the no com with the ecm, air bag, abs was bothering me about this one. I scoped the dlc and was recieving data but it was not your normal pattern. Started unpluging modules that shared th...
1991 Oldsmobile Cutlass Calais 2.3L Poor Idle Quality, Hesitation, Cuts out, Stall, MIL Lamp on VIN: 1G3NL54D5M
well this one is finaly out the door with no check engine light or drivability problems. once i got back to work today and finaly got a little time to look at it without anyone bothering i discovered the sudden power loss turned into a no start. whick in fact ... Trouble codes: 26 (quad module failure).
1995 Pontiac Trans Sport 3.1L Lifters, bearings VIN: 1GMDU06D75
Hello all! I finally got to the bottom of this beast (almost literally) on Friday evening. After reading some very informative replies I immediatly pulled the camshaft out. The camshaft looked fine so I check the bearings to see if they had spun. All the oil h...
1995 Saturn SL1 1.9L Surge VIN: 1G8ZH5282S
Well, I apoligize for the delay and I hate having to close a post like this. I would like to thank everyone for the responses. I got some realy good ideas including intermitant brake booster problems. After trying to schedule an appointment for the customer to...
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