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Prev Professional Automotive Repair Technical Discussions for September 8, 2011
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Open Help Requests for GM
Help Request Answers
2000 Buick LeSabre Custom 3.8L blend door VIN: 1G4HP54K3Y
The heater wont get a bit hot. The water lines are both hot the scanner showed it reading inputs but no heat. When I run the heat from cold to hot I dont hear any sound whatsoever. Im thinking its a blend door but I dont know where it is. I also calibrated it ...
2004 Cadillac SRX 3.6L Misfire VIN: 1GYEE63734
we have this cadillac with a injector problem we have put a new injector and cleaned the injectors and in the scanner it shows me injector command in msec and #6 will read 2.8 msec when cold and when gets hot it will start to miss and read 0.00 msec would this... Trouble codes: P0206, P0300
2006 Cadillac SRX 3.6L Engine VIN: 1GYEE63730
Hi guys-I think I know what we have going on here, but would like to have a bit of feedback regarding the problem. I think we have bad timing components and/or a bad VVT actuator(s). Owner complained of noise when started. We were never able to duplicate the p...
1991 Chevrolet Corvette 5.7L Hesitation, Surge, Cuts out VIN: 1G1YY2383M
Hello everyone! I want to thank everyone in advance for the input. This corvette came with a complaint of hesitation on accel. After checking the basics (ie timing, vacuum, fuel pressure) went for a test drive with scan tool and found timing being retarded bac...
1999 Chevrolet K2500 Suburban 7.4L lower contro arm bushings VIN: 1GNGK26J1X
no bushings are locatableable, not dealer or aftermarket, moog and trw engineers have no idea, need help to find replacement bushings,
2001 Chevrolet Silverado 1500 5.3L Poor Idle Quality, Cuts out, Misfire
Customer emailed and said the unit backfires,spits and sputters when cold. Customer lives in Montana. He comes to my shop in Ne. twice a year for visits and to get repair work done on vehicle. I have only the info on the unit from the last time I worked on it....
2002 Chevrolet Impala 3.8L Hesitation, Cuts out, Misfire VIN: 2G1WH55K21
Thanks in advance. I'm not realy up on GM'S this car is from another shop, This Impala falls on its face 3/4 too wot while popping in manifold and fuel knock . Cat tested good with pressure gauge, injectors are adding fuel, maf looks ok and has been changed, 1...
2003 Chevrolet Tracker LT 2.5L MIL Lamp on VIN: 2CNBJ73433
This tracker came in customer stated that the speedo had stopped working. she mentioned she slapped the dash and it then worked but that did not explain why the vss set a code sounded more like bad speedo head. the intake air temp code was also present. I at t... Trouble codes: P0500, P0113
2007 Chevrolet Silverado 2500 HD LT 6.0L No Shifting VIN: 1GCHC24U17
Only when is cold at times,transmission does no shift,like no transmission and sometimes it shifts but no power.also noticed that by turning the key off and restarted it works, and this is only happens sometimes not all the times,and ther are no tranny codes,p...
2008 GMC Sierra 1500 SLE 5.3L abs VIN: 2GTEC19J48
changed differental can anyone tell us how to change ratio in the computer
1986 Oldsmobile Delta 88 Royale 3.8L inst. lights VIN: 1G3HN6931G
Hello, I have a 1986 Oldsmobile Delta 88 that has no instrument lights, the bulbs have all been replaced, the fuses are good. The hazard light indicator is illuminated. I have never worked on a problem like this myself and the vehicle is in another state. Can ...
2008 Pontiac Grand Prix 3.8L Reduced engine power VIN: 2G2WP55288
Please review repair history before replying. We have done every wiring repair per every TSB's and Identifix we could find. Problem- Vehicle intermittantly, and randomly goes into "reduced engine power" mode. Check engine light goes on with Throttle body code...

Fixes & Summaries for GM
Fix/Summary Answers
2006 Cadillac CTS V 6.0L MIL Lamp on VIN: 1G6DN57U46
Thank you to all the replies , and to Frank [...] for getting the correct part number as the GM catalog was incorrect, All the repairs were correct way to fix the vehicle. got rid of the old codes and now as of late the vehicle returned with a new code P0222, with... Trouble codes: P0220, P2135 (App ciruit 2 fault).
1965 Chevrolet Impala 5.4L AC Capacity VIN: 1G1AZ37AGE
Thanks very much for all your reply's to my help request.Many have stated I would be better off converting this system to a cycling clutch and after doing a little research,that's what I'm going to do.Money's a little tight right now(my bride of 37 years says ...
2003 Chevrolet Express 1500 5.3L Fuel tank fill tube VIN: 1GBFG15T63
Thank you guys for the good replies.I took the fill tube and hose off and looked them over.There is no plastic vent tube inside the fill hose on this van.The fill tube and hose looked good.I performed the TSB #02-06-04-055 which is for difficulty filling vehi...
1997 GMC C1500 Sierra SL 5.0L brakes VIN: 1GTEC19M6V
First of all i want to apologize for not responding sooner,i needed some time off after this vehicle,lol i want to thank all of you for your help,especially Calvin. The problem turned out to be a brake line which was buried and could not see any leaks. In the ...
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