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Prev Professional Automotive Repair Technical Discussions for March 5, 2009
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Open Help Requests for GM
Help Request Answers
1997 Buick Park Avenue Ultra 3.8L converter VIN: 1G4CU5215V
Hello there car came in with code po742 tcc stuck on can command valve open and close seems to operate properly not that familar with these trans any help would be great thank you.
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2003 Buick Regal LS 3.8L MIL Lamp on VIN: 2G4WB52K23
This is the third time that the car has come in with this code. We have replaced the converter two other times with carquest units. the temp is same from the front and rear of the converter. There are no missfire counts in the computer the fuel trims are good.... Trouble codes: P0420
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1996 Cadillac DeVille 4.6L extended crank times VIN: 1G6KD52Y1T
Car came in with a no start/no crank condition. Diagnosed broken wire in VATS system at ign lock cyl, replaced ign lock cyl. Cranks and starts, but when cold, has extended crank times. Customer confirmed that vehicle had extended crank times before VATS wire ...
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2000 Cadillac DeVille 4.6L abs VIN: 1G6KD54YU2
hey fellow techs, have this cad that will intermittently set abs dtc c1227 for left rear sensor, problem has occured 3 times since december. have replaced sensor twice, and routed new harness from sensor to module,away from any RFI possibilities. am thinking p...
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1994 Chevrolet C1500 Cheyenne 5.7L No Start VIN: 2GCEC19K0R
hi everyone. this c1500 pickup truck came in for engine replacement due to overheat condition but run good. i just install 95 engine from junkyard with very good reputation. they said it ran before they remove. anyway the engine can't start due to no spark or ...
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1995 Chevrolet Camaro 3.4L Runs rich VIN: 2G1FP22S1S
This Camaro was towed in with a completely plugged catalytic converter, it wouldn't even run enough to get it in the shop. We replaced the converter and changed the engine oil (it was dark and very gassy) it will now run, but it runs rich. Any suggestions will...
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1996 Chevrolet C1500 5.7L Defaults to 3rd gear
Transmission shifts through all gear ranges normally one time, then after coming to a stop, defaults to 3rd gear. Trans. can then be shifted using a scan tool, comanding desired gear ranges. I originally replaced the 1-2 shift solenoid, because trans. would ma...
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1997 Chevrolet C3500 Cheyenne 6.5L No Start VIN: 1GCHC39F9V
We do not have alot of diesel experience , so we need some help. This truck came in as a no start no crank but Cust said is hard to start & no start at times. Batteries were dead . We replaced one battery & charged the other. After battery replacement the tru... Trouble codes: P1217
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2000 Chevrolet Impala LS 3.8L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Poor Fuel Economy VIN: 2G1WH55K0Y
Hi guys, i have a 2000 chevy impala that a customer brought to me for the check engine light on. the history on the car is as follows... the customer just bought the car with the plastic intake manifold that had exploded into pieces. he had another shop replac... Trouble codes: P171, P0507 (idle air control rpm higher than expected)
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2000 Chevrolet Silverado 1500 5.3L No Start VIN: 2GCEC19T0Y
Thanks to all who reply I apologize up front for the lack of info. but this truck is not at the shop. What I know so far is that the truck did run great. Until the owner started it one morning and said it ran for about 30 seconds. Then it died like ran out ...
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2002 Chevrolet Astro LS 4.3L Misfire, MIL Lamp on VIN: 1GNDM19X12
This vehicle came in running very poorly. The crank sensor had been hitting the reluctor and was dead. It was replaced and shimmed, per factory bulletin, as the case looked fine. It also had a code P0300 for random misfire. Also had P0101 Mass air folw sensor ... Trouble codes: P0300 (Random misfire)
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2004 Chevrolet Impala 3.8L blinker fuse blows VIN: 2G1WF55KX4
car came in with no blinkers working both hazard and blinker fuses were blown replaced hazard and blinker switches everything worked good for one day now everytime left blinker is used fuse blows again works fine with right blinker on light assemblys look ok c...
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2006 Chevrolet Trailblazer LT 4.2L No Start, Stall, MIL Lamp on, reduced engine power VIN: 1GNDS13S66
We have an 06 trailblazer with complaints of intermittent no crank, intermittent stall( any speeds). We experienced the no crank 1 time, vehicle then started and has not failed to not crank again. After bringing the truck in shop to check no crank, reduced eng... Trouble codes: P1516, P1682, P2610
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1995 Geo Prizm LSi 1.8L No Start VIN: 1Y1SK5286S
Car came in not starting. 1)Found that cam sensor in dist was destroyed from hitting the pick up rotor on the dist shaft: replaced w/ reman dist. 2)Had cam signal only when dist was unplugged. Replaced ECU: cam signal ok now. 3) Next had no crank sensor signal... Trouble codes: 14 (Ignition signal)
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1997 GMC C1500 Sierra GT 4.3L No Start VIN: 1GTEC14M3V
Yes the weather will get damp but this might even be some kind of acid. To replace the whole distributor might fix this but would be 300 400 bucks and then wait 6 months the truck may not start again.
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1999 GMC Sonoma SL 4.3L No Start VIN: 1GTCS14X8X
this truck keeps coming back with the owner saying it wont start cranking but if he lets off key,sometimes it will start.problem is very intermittent and i have been only able to get it to do it once.it cranked and would not start but as i let off key it start...
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2005 GMC Yukon Denali 6.0L rear overhead dvd VIN: 1GKEK63U45
The passenger overhead dvd unit is dispaying "disc region error". The previous unit got wet from a leaking sunroof seal. Sent out unit for repair, rebuilder told me that it needed programmed with a tech 2. Just got it back from the dealer, and they are telling...
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2006 GMC Sierra 1500 SLE 4.8L MIL Lamp on VIN: 1GTEK19V56
When Going Through The Tests For Code P0449, Harness At Solenoid Disconnected, Battery Voltage Is Present But So Isn't The Ground From ECM. Always. As Soon As The Key Is Turned On The Ground Is Present. Using Scan Tool Has No Affect On The Ground. Disconnected... Trouble codes: P0449 (EVAP Vent Solenoid Valve)
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1994 Pontiac Bonneville SE 3.8L No Start VIN: 1G2HZ52L8R
Following the listed historical repairs. The vehicle came back 18 days later with a int. no start. after letting sit or continued cranking the car will restart, run perfect for 30 to 500 miles between 15 to 50 starts with no problem. Clues unacounted for: 1. ...
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1999 Pontiac Grand Am SE 2.4L Unknown VIN: 1G2NE52T1X
Good morning to all.I have this Grand Am that is here for a intermitant ABS light comes on complaint.Codes stored are: c1226 RF or any w/s excessive variation c1225 LF or any w/s excessive variation c1222 RF or any w/s =0 c1221 Lf w/s =0 c1233 RF or any w/s op...
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2000 Saturn SL1 1.9L Accessories VIN: 1G8ZH5283Y
This Saturn is blowing the horn when opening the door. Placing the key in the ignition and turning forward turns the horn off. The customer just purchased the car and did not recieve any key fobs for the factory keyless entry system. My question is: Is there a...
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Fixes & Summaries for GM
Fix/Summary Answers
1995 Cadillac DeVille 4.9L No Start VIN: 1G6KD52B7S
after trying spark module and testing dist and circuts(all ok)nothing. checked comp powers and grounds(ok)and trying another comp,nothing.i checked all grounds and connections(ok),checked ic connections(ok).with some info on this car limited i have checked eve... Trouble codes: 83 (no crank a or b), 81 (cam to ref fault), 78 (to many 24x pulse), 104 (internal ecm prob/stack overrun), 113 (quad driver 1 open/short), 112 (eeprom failure).
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2002 Cadillac Seville SLS 4.6L Cuts out VIN: 1G6KS54Y12
Most replies pointed to the ignition switch, and we did experience a no-crank condition twice in the shop. Replaced switch, and car has been out on the road with no problems for 2 weeks now. Thanks again for the help.
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2003 Cadillac DeVille 4.6L Accessories VIN: 1G6KD54YX3
To all; Thanks to everyone who took time to read my post. I was ablke to take the short cut most suggested as far as the seat heater and found the bottom grid was bad. I was able to replace it pretty quickly without even taking out the seat. I unclipped the fr...
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2004 Cadillac CTS 3.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GC3GFS61H
WE ALWAYS OVERLOOK THE OBVIOUS. THE CUSTOMER HAD TAKEN HIS VEHICLE HOME UNTIL WE COULD DECIDE WHAT THE NEXT STEP WAS IN THE PROCESS. I HAD CALLED HIM AND ASKED IF HE HAD CHECKED THE OIL, I DIDNT. 4 QTS LOW. PROBLEM SOLVED. SPECIAL THANKS TO ROBERT, THAT WA... Trouble codes: P0341 (intake camshaft position sensor performance bank 1).
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2001 Chevrolet Impala LS 3.8L No Start VIN: 2G1WH55KX1
Sorry it took so long to reply back, but i think this one is fixed.What i did was i replaced the pas lock sensior and the bcm took it to the dealer and had it programed.The custermer has been gone for one week now and havent heard any complaint.THANKS FOR THE ...
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2001 Chevrolet Monte Carlo SS 3.8L cooling fans VIN: 2G1WX15K21
replaced t-stat fan now off no more codes at proper temp
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2003 Chevrolet Silverado 1500 5.3L MIL Lamp on VIN: 2GCEK19T03
HEY GUYS THANK YOU FOR ALL THE REPLIES I SENT THE TRUCK TO THE DEALER AND THEY REPLACED THE CONVERTERS UNDER WARRANTY I ALSO REPLACED MAF AND CONNECTOR AND SO FAR ALL IS WELL THANK YOU AGAIN TO ALL GOD BLESS Trouble codes: P0101 (p0420-), P0420.
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2008 Chevrolet c5500 6.6L chng fuel filter light VIN: 1GBG5V1918
well 3 of 5 hit it right you have to turn key on engine off & hold accelerator pedal & brake pedal down for 10 sec. it took a couple of times but it did reset. thanks to all, Ron
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2001 GMC Sierra 3500 SL 6.6L No Engagement VIN: 1GDJC39171
After the customer haggled with his insurance company over the accident causing this problem, they decided our price was too high to overhaul this unit. They hauled it off to a "cheapie" transmission shop for repair who 'rebuilt' it for not much more than the ...
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2002 GMC Sierra 1500 SL 5.3L MIL Lamp on VIN: 2GTEC19T22
Replaced intake gasket when doing knock sensors and this code has not come back. Thanks for all your replies Trouble codes: P0300 (testing and results).
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1990 Pontiac Firebird 5.0L No Start
Thanks from every one that replied.I got usefull info.I am going to send the ecu to be reprogramed to a none pass key system.
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1997 Pontiac Grand Am SE 3.1L door locks VIN: 1G12GF578F
after removing the bcm we found that over the winter water had driped in side and corroded the terminals from the out side it looked good,we patched the hole and re located the bcm and everthinh works good
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2002 Pontiac Grand Am SE 3.4L Radiator VIN: 1G2NF52E42
Jacked up front of vehicle. Run engine up cracked bleeder and to off coolant cap. This vehicle has no radiator cap. Got some more air out and was able to add about 1/2 gallon on dexcool.
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2003 Saturn Ion-2 2.2L lock cylinder VIN: 1G8AJ52F23
Thank for all the help. The pin on the shift lever that moves up & down when you push the button down was bent. When you let up on the button it would not lock in park or close the lock switch on shifter. Bent the pin up & every thing works great.
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