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Prev Professional Automotive Repair Technical Discussions for May 27, 2010
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Open Help Requests for GM
Help Request Answers
1996 Buick Park Avenue Ultra 3.8L hvac controller VIN: 1G4CU5213T
Cleaned the batt. terminals on this 96 buick park ave ultra and now the hvac controller is on celcuis and cant get it switched back. There is no english/metric button(that I can find) and nothing in the owners manual, alldata or IATN please help!
2000 Buick LeSabre Custom 3.8L cooling fans VIN: 1G4HP54K6Y
Car came in no a/c.Evacuate and recharge,compressor runs,cooling fans do not,I can make fans run with scan tool.Wiring diagram is pretty poor any help would be apperciated.Car does not cool with fans on
2001 Buick Regal LS 3.8L Stall VIN: 2G4WB55K31
I have a 01 Buick 3.8L, customer complains of stalling. After scanning, finding no codes, fuel pressure is within spec. It took several test drives to get the car to stall. It acts like it runs out of fuel, with no drop in fuel pressure though. After stall the...
2000 Cadillac Seville SLS 4.6L Ride Control VIN: 1G6KS54Y4Y
Customer purchased struts elswhere and wants us to install them. The vehicle has electronic ride control and the struts he purchased are ACDELCO struts front part#503-389 and rear part #504-547. These are regular struts and not designed to replace the electron...
1960 Chevrolet Corvette 4.6L Air cleaner VIN: 00867S1007
1960 Corvette, 283CI, Solid Lift Cam Iím finding motor oil inside the air filter element inside the air cleaner. There are no penetrations of the air cleaner other than the carb inlet. This condition began when I replaced the stock cast iron intake manifold a...
1995 Chevrolet Blazer 4.3L Electronic VIN: 1GNDT13WXS
Had trans. shop do re-build with new parts, also with new wiring harness and all new shift sol. rev. is good but still takes off in third, manal shift to low and still will only go to second gear not low, plug in new ing. switch same problem no codes. Scaner s...
1998 Chevrolet K2500 Cheyenne 7.4L MIL Lamp on VIN: 1GCGK29J8W
Came back to me NO performance issues just check engine light, Scanning the truck I see the bank 1 down stream O2 sensor read very low .01mv sometimes jumps up to .06 and bank 2 downstream sensor is cycling between .2 and .6 (i consider normal)is it? These are... Trouble codes: 137 (O2 low voltage bank 1 sensor 2), 172 (Fuel trim rich bank 1), 175 (Fuel trim rich bank 2)
1999 Chevrolet Malibu LS 3.1L MIL Lamp on VIN: 1G1NE52J4X
Car originally came in last Fall with P1133. No problems, just light. Test drove, cleared, sent her home. About a month ago, car came back. Light on, same code, no issues felt driving, etc... Another worker in the shop pulled this ticket, scanned car, dunked a... Trouble codes: P1133 (Pre-Cat Insufficient Switching)
2000 Chevrolet Blazer LT 4.3L Starter VIN: 1GNCT18WYK
Came to the shop on the hook, No crank, Replaced started and started right up, Backed out of the shop, no problem untill it was put in drive, when put in drive, the started engages and that started tries to start the engine which is already running. Looked und...
2002 Chevrolet Camaro 3.8L Engine VIN: 2G1FP22K82
The customer was getting on the freeway and started loosing power to the point that it died. He said it restarted revved up to about 5K-RPM then died & would not start sounded like a dead battery, click,click,click. Tow truck arrives some time later eng. crank...
2002 Chevrolet Tahoe LT 5.3L 2-3 solenoid circuit B VIN: 1GNEK13T52
First, Thank You for taking the time to look at this request. Customer complained of a lack of power when starting from a stop. Check Engine light was on. Scanned and came up with P0758, 2-3 Shift Solenoid 'B' circuit fault. After going through the archives an...
2004 Chevrolet Silverado 2500 HD 6.6L No Start VIN: 1GCHK23254
Lly series durmax. 4 weeks ago the customer filled up with gas, drove it untill it died. That same day we drained, flushed and refilled with fresh diesel. Started up and appeared to run o.k. However, if left to sit overnight or on an incline it will go into to...
2004 Chevrolet Silverado 1500 4.3L Starting VIN: 1GCEC19X64
Hi all, this truck was towed in battery dead. Charged the battery and found it still will not crank over and the dash and DRLs will stay one even with the key out of the ignition switch. Found a TSB with the same symptoms for the ignition switch being out of t...
2004 Chevrolet Silverado 2500 HD 6.6L Poor Idle Quality, Misfire VIN: 1GCHK29274
Researched the codes a little and saw no obvious rubs in the wiring. Pulled and twisted the wiring a little cleared codes started the vehicle,did the relearn,drove through 3 shift cycles(running good)after the 4th stop bang back again, including the TCC code a... Trouble codes: P0203, P2149, P0742
2002 Oldsmobile Alero GL 2.2L injector pulse VIN: 1G3NK52F82
with scan tool installed readings look good but after trying to start ignition turned off ,then on, readings are out to lunch iat -40 ect-40 engine load 0%. When readings good iat ambiant temperature ect ambiant temperature engine load 100%. I suspect pcm but ...
1998 Pontiac Firebird 3.8L Speedometer VIN: 2G2FS22K2W
Hello GM Techs, Replaced 1998 OEM rear axle assembly with used 2000(salvage yard) unit. Was able to obtain VIN from donor car. It is a 2000 Firebird equipped with the GU6- 3.42:1ratio axle. Of course, you know my problem at this point. The speedometer indicate...
2001 Pontiac Grand Am GT 3.4L lacks power VIN: 1G2NW52EO1
This vehicle was brought to our shop because the customer was convinced she had a transmission problem after driving the car it was clear to me the car lacked power as if it was starving for fuel or the exhaust was plugged. I explained to her that her problem ...
2004 Pontiac Grand Prix GT1 3.8L steering VIN: 2G2WR52404
This car came to us with the supercharger belt off, the belt had broken and came off and got tangled up in the power steering pump pulley. the pump was also leaking because the belt had damaged the front seal of the ps pump. we replaced the power steering pump...

Fixes & Summaries for GM
Fix/Summary Answers
1996 Chevrolet S10 4.3L Compressor VIN: 1GCS19X0T8
I would like to report that the truck is fixed, but unfortunately the owner does not have the means to do the repairs at this time. Judging from the responses I am confident that the problem was a bad compressor, and when the truck comes back in I will send an...
2001 Chevrolet S10 4.3L Starting VIN: 1GCCS19W81
Unfortunately, I don't have any more information. The customer didn't want to pay for any diagnostics and chose to take his vehicle. I guess people will let you do whatever you want to their cars until you ask them to pay for something. Thanks anyway.
2002 Chevrolet Impala 3.8L No Start VIN: 2G1WH55K12
well i finally got relearn to take.followed many of the tips members suggested,could not find any thing wrong.what i believe helped was disconnect battery overnight,with auto charger to fully charge it,did relearn with booster pac and batteryconnected.i had be... Trouble codes: B2958, B2960.
2003 GMC Safari 4.3L Won't run monitors VIN: 1GKEL19X33
After rechecking O2 sensor activity, especially from a cold start (as suggested), and finding no issues, I resorted to a battery disconnect (again) and a different drive cycle stressing high electrical loads on the cold start (using AC on along with defroste...
2004 GMC Sierra 1500 5.3L a/c comp. VIN: 2GTEC13T14
I've been working has cars for over 30 years and have always trusted the snap on scanner,I don't know if I will trust it so much any more.when this truck came into my shop the heater control head was only half lit up. had no temp. control after driven awhile. ...
2000 Saturn LS2 3.0L Fuel pressure VIN: 1013073673
Avinash from tennesse was right it was a cam sensor,replaced sensor and car runs like new. Thanks to all those who helped God Bless
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