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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for December 19, 2006
International Automotive Technicians' Network (iATN) - Members Only
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Open Help Requests for GM
Help Request Answers
2002 Buick Rendezvous CX 3.4L fuel guage VIN: 3G5DA03E32
gage goes from empty to full,and in between also low fuel light comes on correctly. have added 5 gal. of gas no change in reading thanks in advance for any help.
2002 Buick Rendezvous CX 3.4L MIL Lamp on VIN: 3G5DB03E32
I suspect the gas tank vent has a problem . My question is there something that keeps liquid from coming out? Trouble codes: P0172
1996 Cadillac Eldorado 4.6L pcm VIN: 1G6EL12Y4T
We have a troubled caddy that starts and stalls. first off the inst panel says "theft system problem , car may not start" . also i cannot comunicat to pcm with scan tool and have both tech 2 and otc. ign key and lock have been rplaced, inst panelhas been repla...
1989 Chevrolet C2500 Cheyenne 5.7L rear brakes VIN: 1GCGC24K8K
Thank you in advance. My tech replace the rear brake shoes and rear wheel cyls. thinking this was the cause of this problem. After driving the truck for 30 miles or more, the rear brakes start to drag. Causing the brakes shoes to smoke. The truck was towed in ...
1997 Chevrolet Blazer 4.3L monitors not setting VIN: 1GNCS18W2V
vehicle came in for emmisions repair . obd monitors not setting we drove it for a good 50 - 60 miles no luck in drive cycle replaced computer. customer drove vehicle came back for us to check scanned none have set no problems found in battery or power feed cir...
1997 Chevrolet Cavalier 2.2L Cooling Systems VIN: 1G1JC1244V
Hello everyone, I'm having trouble with a Cavalier that is running hot. It came in with the complaint of the temp was almost in the red. I installed a new thermostat and that did not help the problem. I got a second thermostat because I thought the first one w...
1998 Chevrolet K1500 Cheyenne 5.7L No Start VIN: 2GCEK19R3W
To all my fellow wrenchers. I had a truck towed in as a no start that the customer said had been a hard to start recently. When it cranks it sounds/spits/bucks like drastically advanced timing or out of time. It had a code Po300 (generic misfire). I have had t...
2001 Chevrolet Silverado 1500 5.3L Heater control VIN: 1GCEK14T41
Hot/cold heater control won't work when the truck is warmed up. This truck came in today, and while it was still cold I tested all 3 knobs to see how they worked. 1)Blower knob all five leavels were fine. 2)Blend temp knob Blew colder on the far left (blue) an...
2005 Chevrolet Silverado 2500 HD 6.6L valve train VIN: 1GCHK23265
Duramax!!! #5 rocker arm bridge fell off! anybody seen this? pushrod not bend. will pull lower valve train cover off tomorrow & check for broken springs, etc. has 204,000 miles on it. new owner bought it 29 days ago. no warranty obviously. rocker arms are adju...
1995 GMC G3500 Vandura 5.7L MIL Lamp on VIN: 1GDJH32K2S
hey gent's ,i have this 1995 3500 gmc vandura with a 5.7 liter that has a code 43 knock sensor circuit,one knock sensor,cleared code's ,mil came back on,code 42 knock sensor code came back,test circuit from ecm to knock sensor for short to grnd and for a open ... Trouble codes: 43 (knock sensor circuit), 42 (ignition control circuit)
1999 Oldsmobile Intrigue GL 3.5L No Start VIN: 1G3WS52H9X
Need some help with this Intrigue, came as a no start, replaced crank sensor and start ok, for a few days, then forgot to close ignition one day battery went dead, recharge battery engine will not even crank over, starter is ok, scanner will not comunicate wit...
1999 Oldsmobile Intrigue GL 3.5L cruise control VIN: 1GF2BUFMSE
i have a 99 intrigue with a 3.5 .cruise is inop. a cruise module was installed when it got to our shop noticed green cruise light on instrument panel does not lite up all switches on steering column work main cruise switch works .fuses are good. does this lite...
1989 Pontiac Bonneville LE 3.8L master cylinder VIN: 1G2HX54C9K
Fellow technicians, Thanks in advance for your help, This vehicle came in with a brake noise and a low pedal. We replaced the front pads and rotors, Repaired a section of the rear brake line and replaced the left front caliper (seized). When attempting to blee...
2000 Pontiac Montana 3.4L intake manifold VIN: 1GMDX03EOY
This van has a coolant leak from intake manifold. I am working on this for a friend. I am a trans and diesel tech so don't work on these much. Another shop told him that the heads were leaking also. There is a small amount of sludge under radiator cap and a sm...
2000 Saturn LS2 3.0L MIL Lamp on VIN: 1G8JW52R2Y
b1s1 and b2s1 o2 sensor htr circuits will not turn off Trouble codes: P0030, P0050

Fixes & Summaries for GM
Fix/Summary Answers
2000 Cadillac Seville SLS 4.6L Stall VIN: 1GSKS54Y9Y
the car is fixed!! The problem was both crank sensors. Everyone that replied said the same thing, replace the sensors. the customer is very happy and I am too. Thanks again to all who replied, IATN makes our tough job much easier! Trouble codes: P0101, P0125, P0335, P0338, P0741, P1599.
1991 Chevrolet C1500 Cheyenne 5.7L Heater core VIN: KOME191633
Well these 2 are fixed. Jeff and Vincent from Illinois had the fix for both. The 1991 fix was parking the truck on a hill with the radiator higher than the heater core. I removed the radiator cap and ran the engine until the thermostat opened and I could see a...
1994 Chevrolet G20 Sportvan 5.7L lacks power VIN: 1GBEG25K0R
Thanks to all that helped!! Vehicle still not totally repaired. Drilled hole to check for collasped y-pipe -found single walled pipe. Remove distributor & inspected shaft gear & magnets-both good. Reinspected computer plug in and performed pin drag test-good. ...
1995 Chevrolet Lumina LS 3.4L distributor blockoff VIN: 2G1WN52X0S
after showing customer all responses,we decided to replace engine assembly as a whole..thanks for all the help,and different ideas..Charlie
1996 Chevrolet C1500 Suburban 5.7L tach & speedo VIN: 1GNFK16R9T
it turned out to be the ignition switch and a short in the radio itself thank u all for your help
1996 Chevrolet S10 LS 4.3L No Start VIN: 1GCCS19W2T
Many thanks to about ninteen responses, most of which included 'Change the fuel pump.' Some added, 'Check the fuel injector spider and fuel pressure regulator.' S10 pickup started almost instantly after replacement of the fuel pump with 55 PSI at the rail. The...
2000 Chevrolet Cavalier 2.2L Misfire VIN: 1G1JC124XY
The cavalier from hell is still the cavalier from hell.After tring everything we could think of are skip would not go away. We also discovered the trans. slips at times in the morning. For now customer is diving the car the way it is. He may take it to the dea...
2001 Chevrolet Impala LS 3.8L lf abs sensor VIN: 2G1WH55K31
Unfortunately, my customer is out of town for the next few weeks for the holidays, and will not be able to bring the car in until he returns. I received many helpful replies, most of them saying that the wire harness chafes against either the tie rod end or th...
2004 Chevrolet Tahoe LS 5.3L Battery Drain VIN: 1GNEK13Z74
Sorry about taking so long to close this post but I was wanting to make sure that it was fixed before closing. I had 5 help replies telling me to check the alternator diodes, the instrument clusters have been known to cause this problem, to check the brake lig...
1996 GMC Safari SLE 4.3L No Start, Cuts out, Stall, MIL Lamp on VIN: 1GKDM19W9T
well guys its fixed. as it turns out pcm was cutting out power to engine. replace d with new one and did not stall out for 3hrs at idle. went on 17 mile test drive and no problems. thanks everyone for their suggestions. Trouble codes: P0339.
1997 GMC C1500 Sierra GT 4.3L p0446 VIN: 1GTEC14W2V
Thank You to everyone that replied! This system is amazing, there are fellow techs really willing to help! The customer was getting ancy. (sp)so I did consult with identifix as well, and got some unpublished specs before all of my help came in. Marvin, Jos... Trouble codes: P0446 (evap canister vent blocked).
2005 GMC Envoy XL SLE 4.2L No Start, Stall VIN: 1GKET16S55
This vehicle had to go to the dealer to get a VCI{vehicle calibration index} calibration. A normal calibration programming would not work in the BCM for theft control. Thanks for everyone's help. Trouble codes: P1630 (Theft deterrent learn mode active).
1987 Oldsmobile 98 Regency 3.8L heat VIN: 1G12345689
thanks to all that replied the problem was a blockage in the intake manifold
2000 Oldsmobile Intrigue GX 3.5L Cooling Systems VIN: 1G3WH52H7Y
We had replaced t-stat twice with the updated stat to no avail. We finally drilled out the check valve in the new t-stat housing to 1/4'. The engine now remains in normal operating temp. range with no problems.
2003 Oldsmobile Alero GL 2.2L No Start VIN: 1G3NL52F03
The module was the fix as we knew going into this. I was curious as to if anyone had seen an 02 sensor switching so quickly. No answers. Thanks to all who replied.
2002 Saturn L300 3.0L Center dash vents VIN: 1G8JW54R52
A piece of foam stuck down inside the 'throat' of the center dash vent stopped the air from coming thru. Was able to reach in with a long pair of needle nose pliers and remove it.
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