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Prev Professional Automotive Repair Technical Discussions for August 14, 2012
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Open Help Requests for GM
Help Request Answers
1995 Buick LeSabre Custom 3.8L No Start, MIL Lamp on VIN: 1G4HP5215S
This car is neither obd1 or obd2 compliant. Is there a way to scan or pull info on the power train data? Most of the internet info is of no use as the data link is ob2, but not wired for it or the obd1. I have not found away to scan or pull codes. Some times w...
1991 Chevrolet S10 4.3L engine VIN: 1GCCS14Z3M
vehicle was dropped off as dies at idle,we found a bad intake gasket and repaired it,also replaced iac valve/map sensor/ecm/tbi gasket & fuel filter.fuel pressure is at 13psi & spark is 30kv from the coil.
2003 Chevrolet Silverado 3500 LS 6.6L Transmission No Shift VIN: 1GBJK39123
This truck came in with P0748 in TCM, and no shift, stuck in first (I think it's first). I cleared the code and it comes back instantly. Activated trim solenoid "A" with Tech 2 per Mitchell, shows 79% duty cycle, but no amps. For comparison, solenoid "B" shows...
2003 Chevrolet Silverado 1500 5.3L Starting VIN: 2GCEK19T53
Customer complaint is intermittent start.It does'nt matter if it is hot or cold start.I have not been able to get it to do this when he leaves it with me But did manage to retreive te code B1480. Says that it is battery rundown protection circuit malfunction. ...
2004 Chevrolet Trailblazer LS 4.2L Surge VIN: 1GNDS13S74
this vehicle has a slight surge at all times except at idle. the surge is about 50 rpms. it has a bad catalyst convertor. the rear 02 is switching with the front one. the surge seems to follow fuel trim & o2 sensor numbers. i unpluged rear 02 sensor & symptom ... Trouble codes: P0420
2004 Chevrolet Impala LS 3.8L starter VIN: 2G1WH52K34
This Impala is my personal car and since I do not have access to the body codes I am going to hazard a guess that the security light is on due to a passkey problem.I was able to start the car by leaving the key in the on position for 10 minutes and re-starting...
2005 Chevrolet Trailblazer LS 4.2L blower motor/noise from vents VIN: 1G2NE03915
Greetings, This trailblazer came in with an original complaint of an intermittent noise when driving. I have been able to duplicate the noise in the bay with the blower motor on (a/c on/off doesn't seem to matter), reving engine to 3000 rpm. it makes a high p...
2007 Chevrolet Equinox LT 3.4L light on intermittantly VIN: 2CNDL63F97
This Equinox has an intermittant sensatrac light but nothing seems to be affected & the light will go back out shortly. There is a code 17761 but it is described as an unplublished code. I'm looking for any kind of ideas! Thanks for the help! We have checked a...
2007 Chevrolet Equinox LS 3.4L po966 VIN: 2CNDL13F27
Vehicle came in basically stuck in 5th gear(happened all the sudden for customer) - Also has stability & trac lights on. Codes po700,966,c0561,u0131 all in memory. Tech 2 Tcc pressure control ckt status shows open/shorted. Actual current 0.00 amps. Reference i...
1997 GMC K2500 Sierra SL 6.5L Unknown VIN: 1GTGK29F7V
Truck had no a/c, pump was leaking. we replaced the compressor, sucked it down and charged itas should. The a/c appears to be working. the low side line under the hood get so cold it ices over. But the problem is that sitting in the truck the air coming out of...
1997 GMC Yukon SL 5.7L Mechanical VIN: 3GKEK18R3V
Group, Attempting to upgrade from a 10" drum to an 11" drum on a 1997 GMC Yukon 2 Door, 4wd. My truck, and I also own a 1999 of the same truck in a 4 door with 11" brakes. From what i can see, of course the backing plates, shoes, hardware, adjusters and cylin...
2003 GMC Sierra 1500 SLE 4.3L Poor Idle Quality, Hesitation, Cuts out, Misfire VIN: 1GTEC14X43
replaced cmp, new plugs,cap,rotor,wires,fuel regulator. cuts out when flooring in park. will not accelerate over 40 mph. poor idle. still get p0101. Replaced maf no change. Trouble codes: P0101, P0102, P0174, P0341, P0756
2003 Hummer H2 6.0L front diff rubber mounts VIN: 5GRGN23UX3
There are three bushings mounting the front diff to the frame. The dealer does not have ANY. Cannot be found aftermarket, that I am aware of. Part # for the bushings is [...]. Does anybody know how or where I can get a hold of them???!!!
2001 Oldsmobile Aurora 3.5L Mode switch VIN: 1G3GR64H41
Thanks for taking the time to help on this, I have this 01 Aurora with the 4t65e transmission. When warm the car will not crank (no starter engagement), if you move the gear shifter to neutral it will crank. We have determined it to be the neutral saftey switc...
1994 Pontiac Grand Am SE 3.1L No Start VIN: 1G2NE15M9R
vechile came in no start customer had fan wired to injector harness. vechile came in no start has spark and fuel pressure 35 psi no noied has power on both sides of injector conector.has no comuncation with ecm has new ecm and has been flashed al powers and gr...
1998 Pontiac Grand Am SE 2.4L No Start, Hesitation VIN: 1G2NE52T6W
SEE RELATED HISTORY. Vehicle is now back with the customer stating he could not get vehicle to start unless he left key in run position for ten minutes (theft reset) intermittently, as well as theft light is on and vehicle has an intermittent misfire or hesita... Trouble codes: P1629 (Theft deterent system crank signal malfunction), P1171 (Fuel system lean during acceleration), B1024 (Vehicle theft deterent fail enable due to bad R-code)
1997 Saturn SC2 1.9L Mechanical VIN: 1G8ZG1273V
Hey evryone and thanks in advance for your insight! this is one of my personal cars and as most other saturns of this generation it burns loads of oil (about a quart every 300 miles). I am going to be trying the gm top engine cleaner on it to see if i can get ...
1998 Saturn SL2 1.9L Surge VIN: 1G8ZK5279W
This little ole car surges at 35 to 40 mph going uphill. I suspected that the EGR was the culprit so I uunhooked it & the surge went away. Tried a known good EGR but surge is still there. Checekd the EGR passages & they are clean, cleaned throttle body, reset ...

Fixes & Summaries for GM
Fix/Summary Answers
1998 Chevrolet Corvette 5.7L Crank Pulley VIN: 1G1YY32G3W
First thanks to all who took the time to answer my request. After all responses & talk with an A/C Delco trainer I decided to reference the three arms coming out from center of pulley, putting new one on with part # on at the same spot. It felt ok and customer...
2002 Chevrolet Silverado 1500 5.3L Hesitation VIN: 2GCEK19TX2
thanks for all the input on this vehicle i was in south america guyana and a friend ship this vehicle from the state i am shipping a diff carrier assy to see if this will take care of this problem thank for all the help
2002 Chevrolet Cavalier LS Sport 2.4L MIL Lamp on VIN: 1G1JH12T22
When this Job came in on monday the first thing I found was the check engine light had not been on for a week according to the customer, every thing looked good on the Modis I ckecked the grounds and hooked it all back up and guess what trak light and MIL ON! ... Trouble codes: P0132, C1275.
2003 Chevrolet Silverado 1500 5.3L Misfire, lacks power VIN: 2GCEK19T73
first of all thanks to everyone for there help and info. this one is now fixed after thinking about it over the weekend i was still stuck on the exaust being restricted as some of u said also well after running the truck for a while in the shop i notice some o... Trouble codes: P0118, P0172, P0175, P0300, P0446.
2003 Chevrolet Silverado 1500 4.3L Cooling Systems VIN: 1GCEC19X13
Thanks to all the replies!! We had the heads checked at the machine shop with no problems found... we tryed to flush the block out as much as possible. Everything went back together and put a new lower radiator hose on due to the suggestions from the responces...
1998 Pontiac Grand Prix GT 3.8L rack VIN: 1G2WP52K9W
I have to apologize for not being specific on this problem. I hate to make a long story. The car is borderline junk. Yes it needs brakes,thats why its here. The steering issue came up after I dropped the customer off and drove it back to my shop. When I put th...
2006 Saturn Vue 3.5L starting VIN: 5GZCZ53486
The customer picked up the vehicle, it started working properly just all of a sudden. I am sure it will resurface, and when it does they stated they would bring it back at that time and hopefully we will be able to figure something else out with it then. Tha...
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