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Prev Professional Automotive Repair Technical Discussions for December 28, 2005
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Open Help Requests for GM
Help Request Answers
1999 Cadillac Seville STS 4.6L Turn signals/speedometer VIN: 1G6KY5490X
Had this vehicle for over a week for complaint of intermitent turn signals and speedometer. Could not get the vehicle to act up. No stored codes, cluster connections and grounds look fine. Finally got it to act up last evening, but it only lasted for a few mom...
1993 Chevrolet S10 Blazer Tahoe 4.3L transmission VIN: 1GNDT13W1P
Please help. The transmission is losing fluid from somewhere around the input shaft (torque converter). This is the second junkyard transmission with the same problem. Customer doesn't want to spend alot of money, so I'm wondering if there is any way to repair...
1994 Chevrolet C1500 5.7L Surge, iac code 35 VIN: 2GBEC19K8R
i have bend traying to fix this iac problem code 35 for some time now, iwould apreciate any hellp from other techs on this , we have a 1994 chevy 1500 mark 3 that the code for the iac keeps on coming back eaven after replacing the iac valve and tuning it up. t... Trouble codes: 35 (iac problem)
1996 Chevrolet Lumina LS 3.1L Battery VIN: 2G1WN52M4T
Hello every one, hope someone can help me. Customer brought this vehicle to us months ago with a dead battery and ABS light on. When we brought the car in and checked it out, we found the new battery dead and a new alternator on. We jump started the car and i...
1996 Chevrolet Cavalier 2.2L starter VIN: 3G1JC524ZT
hi,please help!i'm not yet a sponsoring member so i can't check repair database. i read a request for help with a cavalier in the past few weeks with same problem.the horn honks when you attempt to crank over the motor.was there a simple & easy fix or is it ti...
1997 Chevrolet Astro 4.3L No Start, Surge, Stall, MIL Lamp on VIN: 1G45S8TW8A
OK!!! about a month ago this van came in on a hook.. did a tune up, fuel filter and it ran like a champ.. next day couldnt pull itself. checked egr, check all sensors, everythink looked ok. shut it off and started it good as new??? why I dont know... customer ...
1997 Chevrolet Express 1500 5.7L Misfire VIN: 1GBFG15R7V
Hi to all, this van came in with an intermitant skip in the #5 and #7 cylinders. That's what the computer showed and I verifyed it with a scope. The #5 and #7 spark plugs showed a good deal of ash fouling and the plug wires appeared burned. After replacing bot...
1998 Chevrolet S10 LS 4.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GCDT19X5W
thank you in advance. vehicle came to us with a miss at idle on #4 cylinder occasionally on #6. off idle the miss goes away. short term fuel trim seems to be taking away fuel neg 9 to neg 21. that threw out theory for vacuum leak but still tested for vac leak ... Trouble codes: P0304 (4 cylinder misfire)
1999 Chevrolet Lumina 3.1L timing chain VIN: 2G1WL52MXX
car came in with coolant leak at timing cover. we removed timing cover and inspected timing chain and found cam gear was out 2 teeth. we put new chain and gears in correct position and car ran but was noisy in timing chain. we put timing gear on like it was wh...
2000 Chevrolet Silverado 1500 5.3L Surge, Chuggle VIN: 1GCEK19T1Y
This truck came in and customer requested a tune-up. We asked him if he had a complaint? He said vehicle missed at 55 mph going up hills at a steady cruise speed. We due not feel like it is missing, there are no codes and it does'nt show any misfire's. It feel...
2001 Chevrolet Silverado 1500 5.3L dic VIN: 1GCEK14T71
Thanks to all for any help with this question. I'm sure you all are experienced with the Driver Information Center "Change Engine Oil Soon" indicator. I have run into several of these on this particular as an example and several other models with this sytem th...
2002 Chevrolet Avalanche 2500 8.1L trans temp hi VIN: 3GNGK23G32
this 2002 avalanche is driving me crazy, however i can't ship it because i bought this thing back in march of 2005.its a k2500 chassis, with an 8.1l & a 4l80e hd trans. no problems in cold weather, as soon is the outside temp hit about 60 degrees,(may) my hot ...
2002 Chevrolet Silverado 1500 4.3L Misfire, MIL Lamp on VIN: 1GCEK14W72
trk idles perfect no load at 1500 rpm and up has missfire on cyl 3 & 4 plugs are gas fouled on cyl 3&4 at full throttle no miss no other codes no other problems HELP!!! Trouble codes: P0300
2002 Chevrolet Tahoe LS 5.3L Poor Idle Quality, MIL Lamp on VIN: 1GNEK13Z42
Problem occurs when vehicle is cold. Upon a cold start, vehicle's idle will fluctuate and feel as though it is going to stall. Customer states vehicle seemed to run slightly better after having above repairs performed. However, it is difficult to determine if ... Trouble codes: P0171 (Fuel trim system lean bank one), P0174 (Fuel trim system lean bank two)
2002 Chevrolet Avalanche 1500 5.3L MIL Lamp on VIN: 3GNEC13T52
Tested EVAP system vent and purge solenoids - both passed at this time. Mode $06 data shows TID 02 CID 50 failed, but the GM website does not translate this component. It would be nice to be sure if it is a vent or purge solenoid. Does anyone know what CID 50 ... Trouble codes: P0440 (EVAP system)
2003 Chevrolet Monte Carlo SS 3.8L all over VIN: 1FMYUO41X2
customer complains of shaking on highway, balanced tires 5 times (not the problem) rim check for bent ok, dealer replaced axle trying to find, not the problem. Feels like tire balancing. Next step is to replace tires again, but any other ideas would be appreca...
2001 GMC Sierra 1500 SL 4.8L steering VIN: 1GTEK14V21
Hi group. we have this 01 GMC pick up that steers hard, but only while turning left and turning it fast. if it is turned slowly, it seems ok. this condition is worse when cold. it turns fine with front wheels off floor, and turned ok while outside on snow/ice....
2003 GMC Yukon Denali 6.0L speedometer VIN: 1GKEK63UX3
has anyone seen this before? i cannot believe it has no intsrument cluster codes. perform the sweep test on the cluster everything works fine. thanks to all that can help. jason [...] service advisor/tech.
1991 Oldsmobile 98 Regency Elite 3.8L No Start, Hesitation, Cuts out, Stall, Misfire VIN: 1G3CW53LOM
this car came in rough running or not running when warm. it had injector pulse but no spark on the front cyl(didn't check rear). replace ignition module now have good spark. it then seemed to run fine except it wouldn't idle. found cracked o-ring on iac motor.... Trouble codes: 13 (02 sensor), 22 (tps low seems ok now), 23 (iat was unplugged), 31 (park neutral fault), 43 (esc fault)
1992 Oldsmobile Cutlass Supreme S 3.1L Stall VIN: 1G3WH54T3N
customer coplains of vehicle dies then starts right back up . i drove vehicle for 20 mins or so vehicle ran great not sure where to even start beside start component testing noT even sure ill find any thing there
1996 Pontiac Sunfire SE 2.2L theft-deterent VIN: 1G2JB1241T
Hoping to find someone who Installs remote's in 96+ "gm's", or a dealer tech who has specs for the value???or someone that has been able to get this to work? Color of wires are different from all schematics? they are black/white tracer, Black, Black It is a si...
1999 Pontiac Sunfire SE 2.2L Hard Starting VIN: 1G2JB5245X
Thanks for the help ahead of time. I have looked at this and don't really know where to start off. This vehicle is hard to start sometimes. The problem is getting worse and worse. This problem started in the summer and is still doing it in the winter. Other th...
2000 Saturn SL1 1.9L Poor Idle Quality, Surge, Stall VIN: 1GBZH5289Y
Car was towed in for no start. Was told that after driving 1-3 miles, the car would simply shut off. Also idle speed would hunt and surge. The surging is worse when shifting from park to reverse, or neutral. (This is after the customer replaced the intake gask...

Fixes & Summaries for GM
Fix/Summary Answers
1991 Chevrolet C3500 Cheyenne 6.2L gauge fuse VIN: 2GBHC39J2M
Thanks to all that responded to our request for help. We continued to check the circuit by disconnecting the items one at a time. This was time consuming because the short was intermittent and seem to happen only when cold. With this in mind we disconnected th...
1995 Chevrolet Blazer 4.3L No Start, MIL Lamp on VIN: 1GNDT13W85
Hi, Sorry for the delay in responding to my request. Holidays. Everyone was very helpful with your responses. Turned out to be two problems. The vehcile was fixed with the pump change when it left here. On the way home to Reno the check engine light came on an... Trouble codes: P1221 (Fuel Pump Low Volts).
1999 Chevrolet K3500 5.7L abs VIN: 1GCHK33R0X
turn out to be the ebcm was faulty replaced all lights out
1999 Chevrolet Tahoe 5.7L pump shaft VIN: 1GNLEK13R6
Well Folks I really appreciate all the help & insight on this one and although we wasn't able to confirm a fix before the Christmas break(finished installing the new parts very late on 12/22/05 & took Friday & Monday off for the holidays,yeah a 4 day weekend,g...
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