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Prev Professional Automotive Repair Technical Discussions for January 3, 2006
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Open Help Requests for GM
Help Request Answers
1992 Buick Park Avenue 3.8L blower motor VIN: 1G4CW53L6N
check system for codes using self test, no codes.checked all fuses and they are good. was able to jump blower and it works. check relays and they work but i don't get a signal from head unit, i'm suspecting a/c programmer. i was wondering if anyone has seen th...
1994 Buick LeSabre Custom 3.8L radio clock VIN: 1G4HP52L4R
I have encountered what we thought would be a simple fix ..has turned into a small nightmare. There seems to be a continual draw on the battery. Testing indicates the charging system is functioning properly. Battery was replaced after testing with a bad cell. ...
1997 Buick Park Avenue 3.8L line pressure VIN: 1G4CW52K2V
this buick park ave.4t65-e trans. came into the shop with a harsh shift concern, not a real bang but a good thud. pulled dtc's and it only gave me a p1811 code, shift adt's too long. i ran a check on tsb's and came up with a suggestion to replace the epc solin...
1990 Chevrolet Lumina 3.1L Excessive Emissions, Poor Idle Quality, Stall VIN: 2G1WL54T3L
gm geru's, this one got me pulling my hair out(whats left), vehicle came in , belongs to friend, complaining of stall on decel, also indicated cruise had stopped working. Verified complaint on test drive, had no codes @ this time.Found cracked open check valve... Trouble codes: 33 (high map)
1997 Chevrolet K1500 Cheyenne 5.7L Poor Idle Quality, MIL Lamp on VIN: 2GCEK19RZV
The customer had done his own tune up on this truck when he did he broke the distributor where the cap screws down. So he removed the distributor and when he tried to put it back in it gave him the 1345 code and ran bad. He brings the truck to us to fix the di... Trouble codes: 1345A (ckp/cmt out of sync.)
1997 Chevrolet S10 2.2L No Start VIN: 1GCCS1440V
we towed in on 12-30-05 no start , getting to much fuel wash cyl. walls made comp. drop , we built it back up no codes , has ign fire , has inj pulse , fuel pressure ok date on scan-tool shows inj pulse\w 29.5 for all inj's. check pcm grounds @ pcm ok check ma...
1997 Chevrolet Tahoe LS 5.7L starter VIN: 1GNEK13RXV
this tahoe has int no-start.we replaced batt. and codes for security system,however,when vehicle wont crank we've noticed that the shift indicator light is out. as soon as indicator light comes back on vehicle cranks and starts perfectly.we would ap...
1998 Chevrolet Metro LSi 1.3L No Start VIN: 2C1MR5225W
Happy new year to everyone. My problem is with this 98 metro. It starts fine when it is cold,but it will not restart after it warms up unless you jump start it with the clutch.Cranks over fine, spark is fine but injecter paulse is erratic to none, 12 volt side...
1998 Chevrolet S10 LS 4.3L transmission VIN: 1GCDT19X1W
Truck starts out in second gear then shifts into third and thats it, reverse is normal, replaced both shift solenoids and are clicking normally when commanded with scan tool fluid looks real good and truck has low miles any help would be greatly appreciated
1999 Chevrolet Express 1500 5.0L No Start, Hesitation, Cuts out, Misfire VIN: 1GACEG15M4
Van sometimes will kick back when trying to start. like ignitiuon way off. Once started runs fine but pings sometimes under load. No codes. Scope cam and crank signal. Intermitently crank signal will stay high for one cam sensor signal (under normal conditions...
2001 Chevrolet Express 3500 5.7L No Start, MIL Lamp on VIN: 1GBHG31R11
Greetings to all and a happy new year.This mini box truck was towed in from another shop for a no start, it has fuel and spark but sounds like it is out of time.I scanned on board computer and found two codes p341,p1345.I scoped the sensors and both seem to ha... Trouble codes: P0341, P1345
2002 Chevrolet Silverado 1500 4.3L No Start VIN: 1GCEC14W82
Cranks, no start. Kicks back at times and backfires through the intake. Fuel pressure is within specs., but it drops off quickly when key turned off. Looked through throttle body, there is no fuel puddled and no fuel spray when fuel pump is actuated. Has good ...
2002 Chevrolet Express 2500 5.7L voltmeter VIN: 1GNGG25R02
Hello fellow doctors of the automobile, This van has an intermittent condition that I am hoping one of you have experienced. The customer relates that this morning his voltmeter waved at him 3 times. It dropped to the bottom of the scale and then returned to ...
1993 GMC Jimmy SLE 4.3L Cuts out, Misfire VIN: 1GDCT18Z6D
GMC Tecs Typhoon Problem. Truck has 2 problems both hard to diag. On wide open throttle or close to it the engine will miss cut out but only then. The other thing is new, at the same time there is a thumping you can feel and hear in the drive line but again on...
2003 GMC Sierra 2500 HD 6.0L abs module VIN: 1GTHK29U53
problems appears shortly after take off, speed differential ) than 5 miles/hr, rear brakes appear to lock at times, trans shifts erraticly while problem occurs, has new vss and ring appears fine, connector appears solid
2003 Hummer H2 6.0L Misfire, MIL Lamp on VIN: 5GRGN23U93
customer stated engine miss and loud knocking check engine lite is on when i got the car and started it up there was a verry loud knocking that sounded like it was comming from the bell housing area checked for missing torque converter bolts all were tight noi... Trouble codes: P0300
1997 Oldsmobile Aurora 4.0L trunk release VIN: 1G3GR62C5V
This aurora came in with several electrical concerns power lumbar inop and heated seat inop trunk relase inop and now fuel door release inop. I fixed the lumbar and seat heater both broken wires where the harness bends between the door and the body. The trunk ...
1999 Oldsmobile Intrigue GX 3.5L extended crank VIN: 1G3WH52HXX
Fuel pressure good holds pressure. Cranks for about 4 to 5 seconds before starting runs great once started no other driveability problems. There is no injection pulse while problem occurs. Once pulse hits it starts. Watch cam and crank on tech 2, crank on righ... Trouble codes: P0335, P0340, P1372
1999 Oldsmobile Intrigue GL 3.5L Balance Shaft VIN: 1G3WS52H1X
This car came in with both ticking and knocking noises. After considerable effort, the noise was determined to be in the area of the balance shaft. Upon opening up the valley it was seen that the rear bearing for the balance shaft had come loose and the bearin...
1995 Pontiac Sunfire GT 2.3L Poor Idle Quality, Surge, MIL Lamp on, overheat VIN: 1G2JD12D5S
This one is giving me fits. I am ashamed to say we have had it for about 6 weeks now. Original complaint was overheating. We tried several things t-stat, flushing cooling system, blowing debris out of small hoses leading back to jug (that was from iatn post I ... Trouble codes: P0507
1999 Pontiac Sunfire SE 2.4L engine VIN: 1G2JB12TXX
Hello, I have this 99 sunfire with a 2.4l that has a ticking sound, kinda sounds like a singer sewing machine. The engine runs fine, doesn't miss and has 30 psi. of oil pressure at idle. The noise doesn't change from cold to warm. If i short a cylinder the noi...
1999 Pontiac Firebird 3.8L Misfire VIN: 2G2FS22K1X
Vehicle came in with a noticeable miss whether at idle or driving, hot or cold. Scanned computer and retrieved code for misfire, so I watched the datastream and found #5 missing quite often and number 2 every so often. I pulled the number 5 plug and it looked...
2001 Pontiac Grand Am GT 3.4L TCC Converter VIN: 1G2NW52E31
This car will surge,actually a rapid cycling of the TCC..We did have previous troubles with the brake lamp switch, replaced it again hoping for an easy fix..Now replaced the TCC/cruise switch, and checked the signal at PCM, no help there..Took a movie and noti...

Fixes & Summaries for GM
Fix/Summary Answers
1988 Cadillac Seville 4.5L intake gaskets VIN: 1G6KS5155J
thanks for all the help,fix was bad cat,and plugs fouled the first time I ran it.These plugs are hard to change,and it also had a shorted O2,this car has had to have alot of work.O and the gaskets ,the smaller hole goes to the rear to speed up heating of the i...
1995 Cadillac DeVille 4.9L vent controls VIN: 1G6KD52BOS
Thanks to those that replied to my request. I did a little checking of the information I have and a little under the dash check. Then I read the replies I received. Most replies said it was probably the vent controler. After that I decided that it was more wor...
1999 Cadillac Seville STS 4.6L Turn signals/speedometer VIN: 1G6KY5490X
As much as we hate to turn one out, we are forced to on this one unless someting changes in the future. The problems are so intermittent it is almost impossible to to find a definite cause. We did replace the hazard switch since we've seen so many problems wit...
1996 Chevrolet K1500 5.7L dash lights VIN: 1GCEK19MOT
Thank you all very much for the helpful replies. The fix ended up being a pinched ground in the rear from aftermarket trailing harness. And there was a shorted wire to the left front parking light.
1999 Chevrolet Silverado 1500 5.3L Poor Fuel Economy VIN: 1GCEC19T3X
I will call this a fix. It seems that the customer had never changed the fuel filter since new (purchased in '98) and the restriction was causing the main problem. I had many reply pointing to the fuel pressure regulator leaking but this was not the case. I di...
1993 GMC Jimmy 4.3L windshield wiper VIN: 1GCCS11425
thank you to all tech customer called me on the phone he said several times he went out and moved wiper arm then it start working i decided to replace wiper motor assembly for a week already he told so far so rainned hard for the last 7 days.
1996 GMC Jimmy SL 4.3L Unknown VIN: 1GKCS13W3T
Thanks to all that replied. Drained heater core and flushed system. manually filled heater core with a/f and hooked up heater hoses and then filled remaining system. vehicle is fixed.
1997 GMC Jimmy SL 4.3L Excessive Emissions, Misfire VIN: 1GKDT13W9V
Well Guys and Gals,I'm truly sorry,I failed to give you enough information to help me with this repair.We tryed alot of tests,ran new wires to the crank for the p0339, but still came up inconcusive.Triple cheched the distributor,new cam,crank,sensor.Pulled the... Trouble codes: P0339, P0341.
2000 GMC W3500 5.7L Engine VIN: 4KDB4B1R21
I would like to say thqank you to all the people that replied. the information was helpful. The fix is: I tested the fuel system. The system psi at the intake was 56 PSI, too low. I put a shut off valve(my guage has the valve built in) on the return line betwe...
1998 Pontiac Bonneville SE 3.8L Hesitation, Cuts out, Stall, MIL Lamp on VIN: 1G2HX52K8W
Thanks to all who replied. and the culprit is a faulty maf sensor. I should have known better than to trust re-man unit, but cust had already purchased it. installed a new delco and poof problem solved. thanks again Trouble codes: 102 (maf sensor low/out of range).
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