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Prev Professional Automotive Repair Technical Discussions for August 27, 2012
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Open Help Requests for GM
Help Request Answers
2000 Buick Century Custom 3.1L Input speed VIN: 2G4WS52J9Y
Hey all. Need some help on this Buick. Customer complaint is a "bucking" under heavy acceleration like a misfire. There are no codes present. I can duplicate it in the bay while brake torquing. Feels like it will cut out intermittently. I've monitored data wit...
2001 Buick LeSabre Custom 3.8L power windows power locks no interior lights VIN: 1G4HP54K71
this car come with intermittent no start no crank and i found out no interior light no power lock no power windows no radio and display incorrect driver in the instrument cluster @THE SAME TIME WHEN THE CAR WON'T START i wait like 20 min and the cars start wit...
2000 Cadillac Escalade 5.7L Poor Idle Quality, Hesitation, MIL Lamp on VIN: 1GYEK63R9Y
This GM truck idles poor and will hesitate on acceleration. Dealer told her the fuel injectors are leaking. Fuel pressure is 57 PSI engine running or not. Pressure will dead head at 75 PSI and engine will idle smooth. Spec is 60-66 PSI, so we know it is low on... Trouble codes: P0171 (Lean bank one)
1976 Chevrolet Corvette Stingray 5.7L Brake VIN: 1Z37L6S436
Hi, every one. This baby came in with a lots of problem including brake paroblem. According to the customer car has been sitting for a while ,after carburator repair and complete tune up, attempt to go for drive , find out there are no brake what so ever. When...
2005 Chevrolet Malibu 2.2L Starting VIN: 1G1ZS52F75
This car will crank and start when the key hits the run position most of the time,sometimes it will start normally ie: you have to turn key all the way to crank position. ck eng.light and all the other normal lights that come on when you turn on the key and th...
2007 Chevrolet Suburban 1500 LT 5.3L Rear Liftgate VIN: 3GNFC16097
Hello GM guys! This 06 Suburban has a Rear Liftgate that only opens halfway, then closes by itself when operated with the remote! What am I missing here? Thanks to all the great GM mentors here!
2007 Chevrolet Trailblazer LT 4.2L Stall VIN: 1GNDS13S87
Thanks in advance for your help.Customer says when he comes to a hard stop this vehicle will stall then is hard to start. This issue is intermittent and I haven't been able to get it to do it again. Basically I'm looking for a good place to start.The owner sto... Trouble codes: P0017, P0014, P0300, P0506, P1400
2008 Chevrolet Malibu Hybrid 2.4L MIL Lamp on, service hill start VIN: 1G1ZF57508
i'm getting a service hill start on this hybrid .does anybody know what this means, i would apriciate some help. Trouble codes: P1103
2008 Chevrolet Colorado LT 3.7L Front Tired Pressure Sensors VIN: 1GCCS39E78
ok guys here i am again im just having bad luck past couple of weeks. well this one is an ongoing problem from one of our cust. cust had worn tires on colorado and we replaced 2 of them took care not to hurt sensors (tpms light was on before tires were replace...

Fixes & Summaries for GM
Fix/Summary Answers
2003 Buick LeSabre Custom 3.8L High RPM VIN: 1G4HP52K93
Thank you to all that sent help requests. The problem turned out to be the ECU. The wiring at the TPS and at the computer were always steady when voltage was jumping around. One small problem when getting an ECU, the dealer showed one computer for the vehicle....
1999 Chevrolet Silverado 1500 5.3L No Start VIN: 1GCEK14T7X
hi guys thanks for all the reaplies rod got it right the scanner showed 5 volts on passlock data replaced cylinder and it showed3.5 volts did security learn and it fired right up...sorry took so long to reply but wanted to make sure it was fixed
1999 Chevrolet K2500 Suburban 7.4L Cuts out VIN: 3GNGK26J9X
thanks for all the responses. we put another delco pump in it & that did it. just as a note,the first pump was an O.E.M. delco pump too.that's what kind of through me off. thanks again.
2003 Chevrolet Silverado 1500 5.3L Starting VIN: 2GCEK19T53
Customer decided to take it to the dealer. If i hear from him I will pass on any good info.Thanks for the help any way .
1998 GMC K3500 Sierra SL 5.7L Poor Idle Quality, Surge, Stall VIN: 1GTHK34R3W
Well it's been awhile now and the customer hasn't brought the truck back. We disconnected the electrical connector at the purge valve and the problem has not occurred since (I did speak with the customer last week). So we still don't know why it is trying to p...
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