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Prev Professional Automotive Repair Technical Discussions for November 1, 2005
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
1995 Buick Riviera 3.8L Poor Idle Quality, Cuts out, Stall, START AND STALL VIN: 1G4G02217S
WE HAVE ONE BAFFLING US THIS WEEK ALREADY- CAR CAME IN FROM ANOTHER SHOP WITH TUNE UP AND MAF SENSOR REPLACED. CUSTOMER COMPLAINT IS ENGINE RUNS ROUGH AND SOME STALLING @ IDLE IN GEAR. WE FOUND #6 COIL PACK NOT FIRING. REPLACED ALL COILS AND ICM. INTIAL TEST D...
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1999 Buick Regal LS 3.8L abs VIN: 2G4WB52K5X
customer came in to our shop with abs light and speedo not working. did the whole visual check as well as pulled codes. codes found in the system were as follows p1118;c1214;u1096 ran through all diagnostis trouble trees found in mitchell and check all tsbs th...
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1999 Cadillac DeVille 4.6L fuel door,dash,trunk VIN: 1G6KD54Y4X
ok, this is just not my week, got another one here, customer states that vehicle fuel door and trunk will open on their own and extended crack time (seem slow). has happened to me once when trying to pull car in shop. when happened no dash lights and cranked f...
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1999 Cadillac DeVille 4.6L extended crank VIN: 1G6KD54Y7X
this car has a extended crank(up to 30 seconds) at differnt times. i have checked for codes and found none, also checked fuel pressure which is at 44psi when cranking. when car won't start there is no spark at any plugs, so i changed both crank sensors with no...
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1997 Chevrolet K1500 5.7L Excessive Emissions, Poor Idle Quality VIN: 1GBEK19R7V
Hello all This truck came in running very fat. The map was out of range 2.5 volts. Replaced and now runs 1.0-1.3. Tried another mass air flow which runs about 8.7 volts on a hot engine. Replace the pressure reg since fuel pressre was at 75 psi. That made a big...
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2000 Chevrolet Express 2500 5.7L Cruise Control VIN: 1GCFG29R2Y
Went through alldata repair sheet to pcm replacement.My question is how can the computer stop the cruise from working.All inputs from switch to cruise module to computer check good if I did not miss anything. With vechicle jacked up cruise would engage for a s...
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2002 Chevrolet Venture LS 3.4L MIL Lamp on VIN: 1GNDX03E02
Customer complaint: SES Lt with a code P0404 and also a complaint of after the light comes on then there is a extended crank, very intermittantly. This is the second time it came back with same complaint. Gas cap was tight. Manually grounded (back pinned the ... Trouble codes: P0440 (Evap system - Large leak)
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2004 Chevrolet Silverado 2500 HD 6.0L oil pressure VIN: 1GCHK29UO4
hello iatn, thank you all in advance. new customer to me has a 2004 chevrolet silverado 2500hd 4x4 with 6.0l. when engine is cold upon start up, low oil pressure comes across message center. oil gauge just reads above o psi. if throtle is opened just above idl...
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1998 Oldsmobile Aurora 4.0L MIL Lamp on VIN: 1G3GR62C7W
Hey all you gm guys, having trouble with this arora communicating with snapon solus scan tool. Vehichle will not communicate in either vehicle specific or generic OBD2. Have all the proper power and ground to the connecter and no blown fuses. Our Solus works o...
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1999 Oldsmobile Bravada 4.3L steering VIN: 1GHDT13W2X
This Bravada is kinda wierd intermitantly especially when cold the vehicle will have a stiff turning steering wheel, it seems to be in only one position you can hear the pump straining so something must be stiff . If I turn the wheel by hand on the lift feels ...
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1992 Pontiac Grand Prix LE 3.1L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy VIN: 1G2WH54T7N
hello fellow techs, Got myself in a quarrel here working on uncle's car. it has a cylinder 5 misfire that only occurs at idle, off idle it is fine. I have replaced the injector, put new plugs and wires on it. it has great compression 175 and leakdown was 10-1... Trouble codes: 35 (iac circuit malfunction)
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Fixes & Summaries for GM
Fix/Summary Answers
1994 Buick LeSabre Custom 3.8L No Start, Stall VIN: 1G4HR52LXR
thanks to all that replied. the fix was the ecm. i went back to square one & began dignosis. had fuel & fire, lost injector pulse after start up. checked cam & crank inputs to computor, both were there. so injector drivers were missing. this is example of assu...
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2000 Cadillac Catera 3.0L No Start, Hesitation, Stall, MIL Lamp on VIN: W06VR54R0Y
i traced problem to be the ecm. customer had an extended warranty. but ecm was covered by 8/80 factory warranty. so now car is at the dealer.i cant say for sure yet if the car is fixed but i will post more info as i get it. thanks for your input guys and keep ... Trouble codes: P0455, P0703, P0727, P0140, P0160.
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1990 Chevrolet K1500 Cheyenne 5.7L cooling system VIN: 1GT0K14K5L
First of all thank you to everyone that responded. All your suggestions were helpful most of them I had already done but I still appreciate your time involved helping me. Special thanks goes out to Mike [...] who asked the one simple question I had overlooked. ...
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1991 Chevrolet S10 2.8L No Start VIN: 1GCCS14R7M
I am sorry it's taken this long but the weather has warmed up and this problem hasn't resurfaced, thanks for the replies ,most said to check the CTS,TPS or fuel system and ignition module or connector. I will post more if the truck comes back in.
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1998 Chevrolet K1500 Cheyenne 5.7L Poor Idle Quality VIN: 2GCEK19R5W
The truck is fixed. problem ended up being influenced electrically from other areas. Each correction allowed idle to stay lower than before until corrected. 1st repair, poor power feed to pcm from battery(below 10v) due to auxillary battery installed by custom... Trouble codes: P0101, P1509 (Iac system high), P1336 (ckp system high variation).
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1999 Chevrolet S10 LS 4.3L power steering VIN: 1GCCT19W1X
Thanks for all your replies. The power steering pump went out on me during the diagnostics. Put a new pump and flushed system and noise went away.
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2000 Chevrolet G3500 7.4L alignment VIN: 1GBJG31J6Y
first i'd like to thank all of you who replied to this request.we accually had a few problems working,first we did have a bad tire that was causing the pull, the alignment shop we took the vehicle to has a very good repuation in town,when we do alignments here...
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2002 Chevrolet Corvette 5.7L door locks VIN: 1GIYY22G72
We found by swaping a good known door module in the left side that would fix that side door lock. The fix was the left and right door modules. Yes both of them had to be replaced before both sides door locks would lock. We made sure we got the exact part numbe...
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1998 GMC K3500 Sierra SL 7.4L Cuts out, Stall VIN: 1GDGC34J2W
Sorry for delay. The problem was the ignition switch. Thanks for the help. Trouble codes: P0141 (bank 1 sensor 2), P0161 (bank 2 sensor 2), P1626 (loss of VTD communication), U1041 (loss of EBCM communication).
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2004 GMC Envoy XL SLT 4.2L check four wheel drive lamp VIN: 1GKET16S84
i took envoy to friends shop for reflash and owner left this morning for up north. he called this afternoon and all is well. we'll keep our fingers crossed. thanks for all the replies..
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1989 Pontiac Firebird Formula 5.7L rear disc system VIN: 1G2FS2180K
Greetings: The subject 89 Formula has not been completed yet. It is still in my shop temporarily on a 'back shelf' until I have more time. I replaced rear calipers with loaded remans, new rotors, new proportioning valve from Pontiac, reman master cylinder. I h...
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2002 Saturn L200 2.2L DLR flashing + VIN: 1G8JU54F42
thanks for all the replies. It was the BCM. I no longer have to listen to the constant ding ding ding from the BCM and the dash warning light work properly. Just got back from a 7:00 am appointment at the local Saturn dealer and they concured with most of you....
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