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Prev Professional Automotive Repair Technical Discussions for September 18, 2006
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Open Help Requests for GM
Help Request Answers
1999 Cadillac Escalade 5.7L kEYLESS VIN: 1GYEK13R1X
Hi all. I replaced BCM to fix a nonfunctional windows/wipers/radio problem, but after putting in new BCM, keyless entry is now nonfunctional. I've tried to get vehicle to go into transmitter reprogram mode and tried to get transmitters to resync with no luck. ...
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1965 Chevrolet Corvette 327CID overheats VIN: 194675S022
Hello, I have a 65 Corvette 327 stock with about 170,000 miles on it.It was sitting in storage for about 5 years.Since being removed from storage it will overheat driving or idling in about 20 minutes.It boils.Have replaced radiator, water pump,thermostat,and ...
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1984 Chevrolet Corvette 5.7L Poor Idle Quality, Surge, Stall VIN: 1G1AY0783E
at first this car came in for not idling and running poorly. we found tbi gasket leaking. replaced that and still had idle concern. after checking further we found yhe upper plenum gasket leaking bad by egr. we replaced plenum gasket and car now surges at idle...
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1996 Chevrolet S10 LS 4.3L Excessive Emissions, Misfire, MIL Lamp on VIN: 1GCCS14X6T
been to 2 different shops and here we are. when first started engine is somewhat smooth for about 10 seconds and then it picks up a multiple cylinder missfire. under a load it becomes real bad on cylinders 3,4,and 6.the only code showing up is po300. all tune ... Trouble codes: P0300
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2002 Chevrolet Impala 3.4L cabin air filter VIN: 2G1WF55E12
first i would to thank everybody in advance! this vehicle will flood the front passenger floor in heavy rain. i have check the water drains and there are no blockages. my question is the cabin air filter has no cover, and im sure water is entering from there b...
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2002 Chevrolet Astro LS 4.3L driveline VIN: 1GNEL19X52
Truck has an annoying vibration that starts at about 55 mph, at it's worst at 65 mph. We have replaced the driveshaft two times (re-balance and re-built), still there. Removed the front driveshaft, still there. Inspected inside rear differential, no sign of tr...
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2000 GMC Sierra 1500 SL 5.3L red manifolds VIN: 1GTEK19T2Y
Hello fellow techs,hope all is well.We have a new customer that has a k1500 4x4,he had complained about a lack of power when towing his house trailer,he visited a gm dealer in the U.S. somewhere,complained about the lack of power,the gm dealer told his to inst...
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2003 Pontiac Bonneville SE 3.8L MIL Lamp on VIN: 1G2HX54K83
Hoping that perhaps someone like a gm tech has come across this problem and can help. I have a recurring PO440(Evap system leak) code. I have already replaced the gas cap twice and the vent valve AND also smoke tested the system twice. Smoke testing indicates ... Trouble codes: P0440
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1997 Saturn SC1 1.9L No Start VIN: 1G8ZE1284V
Hello all, I'll try to keep this short... This tempermental Saturn only has spark on cyl. 2 consecutively but hve being wacked once on cyl 1 and spotted weak spark on cyl 4 occasionally. we have replaced the crank sensor New, module and coils used and PCM also...
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Fixes & Summaries for GM
Fix/Summary Answers
1989 Buick Century 2.5L Misfire
hey guys well it was a pain but i got the fix on this one. come to find out the module was my skipping problem. the module would die about 30mins after replace ment everytime. i never replaced the coils and the module at the same time, so all i can figure is t...
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1995 Buick Riviera 3.8L Misfire, MIL Lamp on, Stumble VIN: 1G4GD2214S
Well, it ended up being a faulty crank sensor as a couple of you had mentioned. I didn't see any major difference in the signal when I swapped in the new sensor, but it ran well and my cam/crank error PID on the Tech 2 only read 1 count each time it was fired ... Trouble codes: 341 (Cam/Crank Error).
5
1996 Cadillac DeVille 4.6L Misfire, MIL Lamp on VIN: 1G6KD52Y2T
The car is recieving a Jasper reman engine as of today, 9-18-06 because the original reman company cannot get it right after 3 engines. The price difference is $1100 and I will have to eat it. I will return with more info but as for now I have been instructe... Trouble codes: P0300 (Random misfire).
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1997 Chevrolet S10 LS 2.2L Misfire, MIL Lamp on VIN: 1GCCS1942V
FIRST OFF AT THE TIME OF MY UPDATE I FIGURED THERE MUST BE A PROBLEM WITH THE GENYSIS SCAN TOOLS ON THESE TRUCKS i HAVE SINCE CKED ON A 99 WITH THE SAME RESULTS. MOST MENTIONED TIMING CHAIN JUMPING OR INJECTORS ALSO FUEL PRESSURE .PROBLEM TURNED OUT BEING CRAC... Trouble codes: P0300.
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1999 Chevrolet Express 2500 5.0L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1GCFG25M3X
The delay in closing is due to the time it took to sell a valve job and a PCM to a very nervous customer. The deciding factor for me was the behavior of the vacuum gauge during the misfire condition. It bounced just like a sticking valve, and unlike an exhaust... Trouble codes: P0108 (MAP Hi), P0300 (Random misfire), P1106 (MAP Hi Intermittent).
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2000 Chevrolet Silverado 1500 5.3L Surge, Misfire VIN: 2GCEK19T1Y
All the input was great. Thanx again. So to recap came in- fuel trims were '0' when first starting out truck would randomly misfire once you drove 1km trims would become active and climb to +25 and engine smooth out. When idle -trims went to -10 and had slight...
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2001 Chevrolet Suburban 1500 5.3L on star VIN: 3GNFK16T71
thanks to all that replied,First I got the info this being a onstar speaker from customer! customer was incorrect,Thanks to Adam [...] for pointing out what this unit is A Interior Temp Sensor! Yes it does have a tiny fan that draws air over the sensor, this f...
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2002 Chevrolet Tahoe LS 5.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GNEK13ZX2
I fixed this one thanks to Paul from Maryland and Benjamin from Illinois who suggested the Injector was the problem. I took all replies and started with the easiest to check first which was to pull the bank 1 front O2 but got no change. I then removed and insp... Trouble codes: P0300 (Random Missfire).
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1990 GMC R3500 7.4L Poor Idle Quality, Cuts out, Stall VIN: 1GTHR33N3L
i tried two more distributors, i played with the timing dist tooth position. likes people had mentioned.. but i went back to fuel and wanted another sample. i found my fuel pressure gauge was not reading proper fuel pressure. i had not really looked at the gau...
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2002 GMC Sierra 2500 HD 6.0L engine VIN: 1GTHK29U42
Sorry for the delay in the close but i was waiting for the results from the customer.I tryed every option given to me from the help sugested.I basically cannot give a explaination to the fix due to a complete teardown, inspection,measuring,mic,dissasemble of l...
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2003 GMC C4500 Topkick C4C042 6.6L Speedo VIN: 1GDE4E1143
The responses I got were 2 for alternator check out, 3 for reflash the PCM and 1 for reflash the instrument cluster module. I gave up. The customer took it to the dealer and they told him the fix was a reflash to the instrument cluster module. Randy [...] of S...
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1995 Pontiac Bonneville SE 3.8L MIL Lamp on VIN: 1G2HX52K0S
I recieved alot of replies to disconnect the various components which the quad drivers worked.After doing that the ecm still threw codes so I went and installed a new ecm and all is well. Trouble codes: P1670, P1640.
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2003 Pontiac Grand Am SE 3.4L No Start VIN: 1G2NF52E93
Thanks for all the help. The battery feed to the run side of the switch which was the wire I replaced the terminal on the end in the fuse box was very loose. I started vehicle and wiggled wire and it died. Then I had someone wiggle the wire and watch the dash ... Trouble codes: B1369 (Device ignition 0 unlock/on/start), B1379 (Device ignition 3 on circuit open), B2965 (Key in ignition circuit open), U1000 (Class 2 data link malfunction).
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