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Prev Professional Automotive Repair Technical Discussions for November 28, 2005
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Open Help Requests for GM
Help Request Answers
1998 Cadillac Seville STS 4.6L engine VIN: 1G6KY5492W
hello every one. The problem with this vechile is that it only over heats when driving for 10 minuts, but When the vehicle is just idling the tempurture is normal. The fans operate noraml, the coolant is good and the thermostate seems to be opening.I also chec...
1996 Chevrolet Lumina 3.1L TheftLoc radio VIN: 2G1WL52M1T
Customer lost code for Theft Loc radio. I need a code please. 042 042 is all I can get out of it. I hope these are the 6 numbers. Thanks
1997 Chevrolet Venture 3.4L Poor Idle Quality, MIL Lamp on VIN: 1GNDX06E1V
Now the idle starts out at 850 rpm when cold, but slowly creeps up to 1100 rpm in park as the vehicle sits there. IAC counts start at 33 KOEO- then goes to 0, and stays there, as engine warms up. The engine runs good, no misfire, no running problems other than... Trouble codes: 507 (Idle rpm too high)
2001 Chevrolet Impala LS 3.8L abs VIN: 2G1WH55K01
Vehicles ABS light comes on after driving aprox 30 miles. Intermittenly, when braking at all speeds the pedal will vibrate/pulsate and sink to the floor because of the traction control . It seems that everything has been replaced concerning the abs. Am I missi...
2002 Chevrolet Silverado 1500 4.3L No Start VIN: 5B4GP42W22
This is actually a workhorse chassie, everything else is all gm. It came in initally for minor repaires, i wasn't able to get to it right away. when i did get time it was a crank/no start. I finally got it started, pulled some plugs and were fouled. I did a tu...
2002 GMC Yukon XL 1500 SLE 5.3L No Start VIN: 3GKEC16T11
This vehicle eventually starts but cranks a long time or must crank several times before starting. Check with A/C Delco Tech Support and they have been helpful but problem still not resolved. They beleive we have a ground issue. We have check and cleaned all g... Trouble codes: U1041
1993 Oldsmobile Cutlass Ciera 3.3L No Start VIN: 1G3AG54N5P
scanner shows the rpm very erratic maf sensor code and code 42 est just with key on you can hear the injectors pulsing and rpm going nuts on scanner remove the dampner from the crank sensor and the erratic pulses coming from the crank sensor to the ign module ...
1995 Saturn SL2 1.9L abs module VIN: 1G8ZK5271S
I need help from some saturn techs.This vehicle came in after the trans was replaced.The complaint was that the traction light on the dash could not be turned off.After pin testing the abs unit,I tried replacing it to no availe.Then I pin tested the pcm and re...
1999 Saturn SL1 1.9L radiator VIN: 1G8ZH5287X
vehicle has mucho oil in coolant recovery tank. no water in oil.does initially skip and idle high but smooths out after a minute.seems like head gasket but we've never been into one of these.any ideas would be appreciated. thanks, pete

Fixes & Summaries for GM
Fix/Summary Answers
1995 Buick Riviera 3.8L park linkage VIN: 1G4GD22155
Hello everyone; Wow, I received 13 replies, and all but 2 of them said that the park lock rod was coming apart, and that was indeed the problem. The spring on the rod had pushed the wedge past the end of the rod, making the rod too long, it had not separated c...
1996 Buick LeSabre Custom 3.8L No Start, Cuts out, Stall VIN: 1G4HP52KXT
thanks to all who replied to this problem. bravo zoolu to william from new york, and kevin from wisconsin. it turned out to be fuel preasure regulator. strange thing, i checked it early on in this repair but fuel leakage not evident. rechecked friday morning a...
1989 Chevrolet Camaro Iroc-Z 5.0L No Start VIN: 1G1FP21F2K
car is not acting up all the time now. we tried an oil sender and let the customer try it ( we drove the car 3 days and it was ok) but it did blow the fuse again for the customer. customer is going to store car for the winter and we will get to look at it agai...
1993 Chevrolet K3500 Silverado 6.5L Stall VIN: 1GCHK39FXP
I replaced the oil pressure switch & fuel pump replay. Let the customer the vehicle back, hope all is ok. If I have any more problem will post update.
1994 Chevrolet K3500 6.5L no symptoms VIN: 1GKEK19S8R
Good day to all Basically I have learned that the only way to set the TDC on GM diesels is with a Tech ll and one tech said to use the Tech ll to perform the re-learn function. Specs for this TDC setting are: 0 +/- .1/.2. So we went with that info. Thanks to a...
1994 Chevrolet Camaro 3.4L No Start VIN: 2G1FP2259R
Well sorry it has taken so long for this reply. We didn't fix this vehicle,however all suggestions were thought out and implimented.The fact that the car would start cold and crank over hard ,at one time we even checked starter draw which was normal. All 3 sen... Trouble codes: 82 (Ign.ctrl 3x signal error).
1998 Chevrolet Tahoe LS 5.7L engine VIN: 1GNEK13R8W
thanks for all the help everyone. the vehicle was fixed and shockingly enough it was the piston. the bore was slightly to big and the piston was rattling. once again thank you all.
1998 Chevrolet Express 1500 5.7L cruise control VIN: R8W1022970
this one is fixed and gone thanks to everyone who helped.all the info saved me alot of time.most all said a ground problem and with a closer inspection with the park lights on one rear light was slightly dimmer than the others.i removed scoket and there was a ...
1999 Chevrolet Corvette 5.7L right headlight door VIN: 1G35H7Q77H
thanks for the help it was the headlight motor that was bad. thanks again to all that anwser my call for help
2000 Chevrolet Metro LSi 1.3L Misfire, MIL Lamp on VIN: 2C1MR5222Y
thank you everyone for your quick response. i went to check compresion as most of you suggested. i started at #3 where the problem is and found that the brand new wire had been arcing through the plasstic plug boot.replace wire with known good one and no more ... Trouble codes: P0303.
2000 Chevrolet Impala 3.4L starter VIN: 2G1WF55E6Y
Thank you to all who replied. Several suggested to look for some kind of after market theft system. Some have a brake interlock built in. Unfortunately this was not the case. We did find the fault was in the ignition switch. Not in the yellow wire to the BCM, ...
2000 GMC Safari SL 4.3L MIL Lamp on VIN: 1GKDM19W2Y
Well, customer still has not returned for me to further checkout the truck, but I had a couple of suggestions among the replies. One person advised to check the fuel lines in to the injector body for leaks, 2 people thought that the purge solenoid MIGHT be the... Trouble codes: P0172, P0175.
1988 Pontiac Firebird 2.8L Hesitation VIN: 1G2FS87S8G
I received 7 replies 1 said new gas ,clean injectors,change oil all completed. 1 said egr solenoid checked ok, 1 said tps was alresdy replaced and adjusted, 1 said to check ignition primary and secondary, and last but not least 3 said maf system is junk poor d...
1993 Pontiac Grand Am SE 2.3L No Start VIN: 1G2NE5435P
Thanks to all that replied. The majority of you indicated that the problem was most likely a bad timing chain. One also said to check all the cylinder compressions. I did that and #3 was 110# compaired to 160# for the rest. Between this and the previous testin...
1999 Pontiac Grand Prix GT 3.8L Surge VIN: 1G2WP12K8X
I received useful information. The car belongs to a college student. It will be back in my shop over Christmas vacation. At that time I will look for a transmission problem. I appreciate the replies. Thank you.
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