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Prev Professional Automotive Repair Technical Discussions for January 12, 2005
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Open Help Requests for GM
Help Request Answers
1989 Buick LeSabre Limited 3.8L wipers VIN: 1G4HR54C4K
the windshield wipers on this car do not work. i have replaced the wiper motor temporarly. this did not fix the problem. im looking for the fuse block to check the fuse. but the only fuses i find are the 2-15 amp 1-20 amp and some relays all on the same block ...
1993 Buick Regal 3.1L Excessive Emissions VIN: 2G4WB54T1P
Hello, This vehicle came to us as an emission failure. Tailpipe emissions for CO were 3 times the state limit. We replaced the O2 sensor, which was dead, cleaned out the egr passages, and retested and only got a modest improvement. The lower intake manifold ga... Trouble codes: 32 (EGR Malfunction)
1993 Cadillac DeVille 4.9L heater VIN: 1G6CD53B5P
Hi everybody. I've got this Caddy that the heater will only blow hot on the right side of defrost vent and luke warm on left side and lower vents to floor. The air flow is great the temp while driving is 160 on right defrost and 105 on left defrost and floor. ...
1985 Chevrolet K30 Custom 5.7L clutch VIN: 1GBJK34M8F
truck came in with no clutch, replaced master and slave , bleed system. clutch good, test drove clutch went away. i can walk the clutch pedal down like a brake master cly thats bypassing,dont think its air,this is a muddy 4x4 dont want to pull the trans if yal...
1990 Chevrolet Corvette 5.7L Excessive Emissions, MIL Lamp on VIN: 1G1YY338XL
To all technicians, I have a 1990 Corvette that failed the enhance smog check. The NOx emission was above 1700ppm at 15mph and 25mph. The reason for the high NOx was due to an EGR valve not opening. After replacing the EGR valve, I was able to monitor at leas... Trouble codes: 32 (EGR system)
1991 Chevrolet Lumina APV 3.1L Excessive Emissions VIN: 1GNCU06D3M
during test drive it was also found that on hard acceleration that engine would hold back until throttle was let up on then engine would start running good again. we could duplicate problem in shop and ignition timing would retard to appoximately 60 deg below ...
1996 Chevrolet impala 5.7L Hesitation VIN: IGN2BHU456
Hi I am looking for a TSB on 95 impala air pump removel I saw a TSB before on this but can't find it in Mitchell if i could get The tsb # that would be great Thanks
1997 Chevrolet K1500 Cheyenne 5.0L abs VIN: 1GCEK19M3V
we replaced the brake line. tried to bleed the system but failed to get the air out of the abs unit. is there any way we can bleed system without a tech1 scan tool? we cannot get one.
1998 Chevrolet Malibu LS 3.1L blower,windo VIN: 1G1NE52M2W
we think the car needs ign. switch. 1st ques; if we change the elec. switch only, is any programming needed? 2nd ques; if we replace lock cyl also alldata says to do a autolearn only, and no scanner is needed. alldata also says that a scanner will only be used...
1998 Chevrolet Cavalier 2.2L cooling fan VIN: 1G1JC1247W
Vehicle came into shop for overheating. Replaced T-stat, checked ECT resistance and replaced. Car ran for a good 20 minutes with scan tool connected. Cooling fan came on at 196 (has 195 T-stat) and would not shut off even at 180 degrees! Looking at wiring diag...
2000 Chevrolet Silverado 1500 5.3L cold air VIN: 2GCEK19T7Y
the heater works perfect in this truck, all vent settings good and blows nice and hot, however on the passenger side on cold days it feels like there is a door open under the dash, you don't really notice it until you get below -15 celcius. It also gets worse ...
2001 Chevrolet Silverado 1500 4.8L oil pressure VIN: 2GCEC19V11
Hello everyone, co-workers truck seems to have no oil pressure. Warning on dash comes on, and lifters are very noisy. I don't hear any bottom end noise, my question is has anybody come across this problem. I plan to ck pick-up screen and possible oil pump? I...
2002 Chevrolet Silverado 1500 5.3L washer pump VIN: 2GECEK19T3
hello to all i have weird one here when you put the truck into 4 wheel drive the washer motor runs and will not quit until you take it back out of 4 wheel it does not mater if it is 4 high or 4 low both turn on the pump! has any one seen this or maybe some adv...
1994 GMC Jimmy 4.3L No Start VIN: 1GKCT18WOR
Hi. This gmc has odd problem only after it has been warmed up. It will not restart, when shut down for about 20 min. Any time short then 20 min. it will restart After about 1 hour it will restart fine. When it restarts it runs great.There is no signal to the i...
1995 Pontiac Grand Am SE 3.1L unknown VIN: 1G2NE55M65
Hi guys, Got a weird one here. I must be missing something. This vehicle recently started to over heat. You can leave car in shop for a hour running and it might get hot enough to turn fan on once. I drove car uphill 6 miles, let it idle in shop an hour, then...
1993 Saturn SL 1.9L Poor Idle Quality, MIL Lamp on, HIGH IDLE VIN: 1G82H5596P
Complaint is that engine does not idle down during decleration. I origionally misunderstood the complaint as a high idle, checked codes found MAP volts too low. Verified that MAP was 0.95 @ idle. Cleaned the IAC port and checked for vac leaks - none found. I w... Trouble codes: 26 (quad driver)

Fixes & Summaries for GM
Fix/Summary Answers
1995 Buick Skylark Custom 2.3L Misfire VIN: 1G4NV55DXS
Thanks for all the replies. They were all helpful. The problem was the coil housing. Both coils were good, but two (1&3) of the the connectors within the housing had 18k ohms (should be zero or close. The 'problem' with the enige not running with connector w...
1997 Buick Park Avenue 3.8L Convertor? VIN: 1G4CW52K1V
Of the 14 replies I recieved, most said I needed to take trans apart and inspect. The owner declined and just wanted the EPC. I replaced it and drove it for about 25 miles and all worked great. The customer picked it up the next morning and made it about 2 mil...
2000 Cadillac Escalade 5.7L Steering VIN: 1GYEK13R9Y
We do have a Tech 2 which we used to scan system initially. We ended up replacing the steering gear box again with a GM unit but again no improvement. We decided to replace the evo/power steering pump (comes as unit). However the customer drove the vehicle whi...
1997 Chevrolet Camaro 3.8L Mechanical VIN: 2G1FP22K8V
Sorry for the delay,took filter adapter apart and was full of metal,customer went with a new motor instead of rebuiling this one.I guess when it spun a brng it sent metal to the oil filter by pass and stopped it up is why we had so much pressure.
1999 Chevrolet C2500 5.7L MIL Lamp on VIN: 1GBGC24R2X
fixed vehicle before replies received ground wire at back of cylinder head twisted off when first tightened
2002 Chevrolet Impala 3.8L reverse lights,drl lights VIN: 2G1WF55KX2
as most of you suggested it was the bcm.sent to dealer,installed,flashed,gone.thanks to kevin,john,aran and everybody that e-mailed me.hope i can help sometime.
2002 Chevrolet Trailblazer LS 4.2L Poor Idle Quality VIN: 1GNDS13S53
THe fix for this Trailblazer was to clean the throttle body. It had a real heavy layer of carbon in the bore. After I cleaned it, it would actually over-shoot the idle when the A/C was turned off. The PCM soon learned the new air gap and has worked perfectly s...
1994 Oldsmobile Cutlass Supreme S 3.1L Interior Lights VIN: 1G3WH55M2R
Vehicle has a short circut in the driver door latch. Unplugged the connector at the door latch the ran the interior lights, and the vehicle works fine. Customer did not want to repair the vehicle any further.
1994 Pontiac Grand Am SE 2.3L Poor Idle Quality, Misfire VIN: 1G2NE5539R
Hi,first let me thank everyone that replied. I got the car back in last thursday and it was running ok . I checked the inj. pattern with a scope and all the injectors looked the same. I installed 4 injectors and the car has been ok since. Most of the replies s...
1997 Pontiac Grand Am SE 2.4L timing chain
Thanks to many good responses I am now aware of the installation procedure outlined in bulletin 00 06 01 010 that shows exactly how this ritual is peformed.To quote jimmy Buffet from the Bear song... it was so simple it plum evaded me.I have the car back now a...
1999 Pontiac Sunfire SE 2.2L No Start VIN: 2G2JB12A3X
Well fellow techs, this one ate my lunch, I sent the ipc in for repairs and after a week wait I was able to install the part to find the same problems, I had previously replaced the crank and cam sensors and checked the wiring harnesses for short to ground or ... Trouble codes: P0342, P0335, P1629.
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