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Prev Professional Automotive Repair Technical Discussions for May 17, 2005
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Open Help Requests for GM
Help Request Answers
1997 Buick Riviera 3.8L Drivetrain VIN: 1G4GD2214V
Hello guy`s I have this 97 riviera that I got from a local body shop that could not get it. They tell me it was dropped off the lift at a tire store. when vehicle hits 65mph the steering wheel shakes violently. does not change when foot is let off gas until ve...
1991 Cadillac DeVille 4.9L Electronic VIN: 1G6CD53BOM
Hey guys I need some help with this one. The car first came in with multiple drivabilty problems. I found the pcm to be bad. Replaced pcm and to the vehicle on a test drive. The SES light came on while crusing down the highway. Chk codes and found E039 VCC Pro...
1990 Chevrolet Camaro RS 5.0L tachometer VIN: 1G1FP33E2L
engine at idle tach reads 2200rpm book talks of inline filter /buffer cannot find
1991 Chevrolet Corvette ZR-1 5.7L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire VIN: 1G1YZ23J0M
this vehicle came in with a bottom end noise . this is the lt 5 engine . the machine shop rebuilt the engine . the engine was reinstalled & started . ran ok through idle procedure then test driven . ran ok driving for 2 hrs at 55 mph but at idle a slight miss ...
1999 Chevrolet Tahoe 5.7L int lights and door locks VIN: 1GKEC13R9X
if we pull the battery and lights mega fuse out of the under hood fuse block the short go's away.
1999 Chevrolet Cavalier 2.2L Front Brakes VIN: 1G1JC1249X
Hey All, This chevy has me... It will apply the rear brakes the most when braking, the rear end dips bad. On the rack when pushing the brake pedal all wheels will stop. I have loosened the rear adjusters. Rebled the system. Cleaned and lubed the front caliper...
2001 Chevrolet Impala 3.4L temp gauge,elec cooling fans VIN: 1S3BJ6331R
Hello, I have an intermittant problem with the temp gauge and electric cooling fans. They work sometime and then they quit working. The cooling fans will stay running when the car is shut off. I have tried a coolant temp sensor and a computer with no luck. I a...
2002 Chevrolet Venture 3.4L Cooling fans VIN: 1GNDU03E02
Cooling fans will not operate unless comanded on with scan tool. Fans will blow at high and low speeds (only with scan tool) I tested ECT, tested ok, ECT got to about 250F and fans never came on. I am thinking I might have a problem with the PCM but not sure a...
2003 Chevrolet Silverado 2500 HD 6.6L Excessive Emissions VIN: 1GCHC29133
this truck came in with alot of white smoke at idle. truck runs great and is not using any oil. we think we have a injector or pump problem. but to remove injectors is about a 7 hour job. we can not see any leaks at turbo. is there anything we need to check be...
1999 GMC K1500 Suburban SLE 5.7L Misfire VIN: 3GKFK16R3X
We have been working on this truck trying to correct this very intermittant misfire code that rears its ugly head every couple of months.The hard part is trying to duplicate the problem...it only occurs when climbing a long {1-2 mile } very steep uphill grade{... Trouble codes: 0307 (7 cylinder misfire), 0300 (random/multiple cylinder misfire)
2000 GMC K3500 Sierra SLE 7.4L Excessive Emissions, Poor Fuel Economy, MIL Lamp on VIN: 1GTHK39JOY
lt fuel trim b2 -18 at cruise, -9 at idle. b1 also neg. readings. have been on tech hot line and only one reading seems suspect. maf is 2700hz at idle (gm spect is2000, vantage spec is 2300. at 2500 rpm, 4700hz, spec is 4200hz. have tried reman maf and reads s... Trouble codes: P0175
2001 GMC Sierra 2500 HD SL 6.6L noise VIN: 1GTHC29161
what is wastegate pressure on the wastegate hose
1999 Oldsmobile Alero GLS 3.4L Misfire VIN: 1G3NF52E6X
Has anyone else had a problem with injectors sticking on a 3.4 engine. We have replaced all the injectors at least once and some twice. Intermittantly an injector will stick and not pass any fuel. If you tap on the base of the injector it will function normall... Trouble codes: P0304 (Cyl 4 misfire detected)
1999 Oldsmobile Aurora 4.0L park lights flashing VIN: 1G3GR62CXX
I have an Olds Aurora that has the exterior parking lights flashing off and on when car is parked. When car is running all lights operate normaly. The lamp control module has been replaced and the condition persists althought they do not flash as regularly. I ...
1996 Pontiac Bonneville SE 3.8L magnasteer sys. VIN: 1G2HX52K7T
Complaint was powre strg. gets tight at slow speeds, feels normal going down the road.No trouble codes in EBCM (control for this magna-steer sys is in the ABS module). Ran the test procedures in shopkey and this leads to bad EBCM. The ABS system does work, but...
1997 Pontiac Grand Am SE 2.4L Trans slip VIN: 1G2NE12T0V
When we got this car it would set a slip code P1870 after 5 miles or less at interstate speeds. We replaced the TQ converter, a solenoid GM # 2402614, and installed a Transco no slip kit # [...]. After 2 test drives of 30 miles or more there were no more c...
1996 Saturn SL1 1.9L stays in first VIN: 1G8ZH5288T
this vehicle will shift normally for the first few miles then start down shifting until I only have first gear. The mil will come on and have the three codes above (no first, second or third gear) If I reset the computer it will shift normally again for a shor...
1998 Saturn SL1 1.9L MIL Lamp on VIN: 1G8ZH5289W
car came in with cel on.p0133 stored.found bank 1 sensor 1 mv at 0 (all the time,open or closed loop)tried new 02 sensor no change.checked ground at back of block was ok.ohmed 02 wire (pin c14 at pcm)ok at .6ohms.same for tan (c13)wire also at .6ohms.tried kno... Trouble codes: P0133
2002 Saturn LW300 3.0L battery light stays on
battery not charging replaced alternator and battery.if i activate the alternator with a positive wire it will charge untill the car is shut off.sometimes if you start right up it will charge other times it wont.as long as you dont turn it off it will keep cha...

Fixes & Summaries for GM
Fix/Summary Answers
2002 Buick Rendezvous CX 3.4L oil leaks VIN: 3G5DB03E32
replaced timing cover gasket, front crank seal, and oil pan gasket. this cured the oil leak, was leaking in the corner where the pan and the cover meet.
1989 Cadillac DeVille 4.5L Cooling Systems VIN: 1G6CD515XK
After removing the head bolt we found that the block did have a hole rot through it. It was so perfectly round that it looked like it might have had a plug in it. Thanks for the replies, Tom.
1999 Cadillac DeVille d'Elegance 4.6L Starting VIN: 1G6KE54Y0X
After not getting that many responses we decided to pull the steering wheel off and confirmed what we had suspected but where not sure because of the overheat. The 2 small wires were ripped off the cylinder lock. Have new assembly coming today and we should be...
1964 Chevrolet CORVETTE 327CID removal VIN: 400837S100
The Crvette is finished without a hitch. I would like to thank all the people who replied. I who like to send a special thanks to Klaus [...] for sending procedure picture of the procedure from a motor manual
1990 Chevrolet Lumina 3.1L Poor Idle Quality, Surge, Cuts out, Stall VIN: 2G1WL54TOL
the owner decided not to go any further on this repair.i was prety sure that he had a injector problem. thanks for all the help
2000 Chevrolet Silverado 1500 5.3L MIL Lamp on VIN: 2GCEK19TOY
thanks to all who replied, i did replace the evap vent sol with an updated one thru gm , i have not been able to get him back in due to farming season , when he comes in and i get more info i will past an update Trouble codes: P0446.
2003 GMC Yukon XL 1500 SLT 5.3L master cyclinder VIN: 1GKEC16T33
thanks to all who assisted me solving my problem with the brakes. I tried additional bleeding of the entire system, clamped of brakes lines with little improvement. I decided to go with the ABS unit and it firmed up the pedal right away! Thanks again for eve...
1995 Oldsmobile Aurora 4.0L presure control solenoid VIN: 1G3GR62C0S
we checked the pin tension @ trans the pc sol pin was streched out, replaced it and no more ses. thanks for all the help.
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