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Prev Professional Automotive Repair Technical Discussions for August 30, 2005
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Open Help Requests for GM
Help Request Answers
1998 Buick Regal LS 3.8L turn signals VIN: 2G4WB52K4W
this one really puzzles me.it seems to me to be a ground problem.the vehicle starts up fine initally.when you pull the turn signal lever to the left the engine goes dead most of the time.if engine doesn't die then turn signals work fine.when the engine does di...
1999 Cadillac Eldorado ESC 4.6L door locks, VIN: 1G6EL12Y6X
The power door locks will unlock for no reason at all. It does not matter if you are driving, setting, engine on, engine off, key on, key off. Someother things that I have noticed is that the fuel door has popped open when unlocking the front doors with the ke...
2000 Cadillac Seville SLS 4.6L starter VIN: 1G6KS54Y8Y
I have a 2000 Cadillac Seville, it has an intermittent no-start. When turning the key to the start position the starter does not engage nor does the fuel pump run. Have checked and cleaned grounds, can find none loose. Also sometimes when vechicle does start t...
1989 Chevrolet Celebrity 2.8L No Start, Stall VIN: 3G1AW51W2K
good evening-need help from a chevrolet expert-we recieved this car from another shop-it will start and run until it warms up and then it will die most of the time-when it dies the fuel pressure goes from 38 lbs to 5 lbs and then it will not restart-supposedly...
1992 Chevrolet K1500 Cheyenne 5.7L Poor Idle Quality, Hesitation, Cuts out, Stall VIN: 2GCEK19K4N
hi guys. i need your help on this one. this 1992 chev pickup z71 5.7 l runs well and has ample power. the problem is idling. idles ok cold, after a few minutes at idle, begins to have a rough idle, rpm fluctuation and then dies. happens only when hot and at id...
1992 Chevrolet Camaro Z28 5.0L fuel smell VIN: 1G1FP23F4N
should be easy, strong odor of fuel, and after research found that if let idle for a while 5 minutes to an hour it doesnt really matter, although the longer you allow it to idle the more pressure is built up in tank, I found the issue by sniffing out under t...
1993 Chevrolet C1500 Cheyenne 5.7L engine harness VIN: 1GCDC14KOP
Unable to locate engine wiring harness new or used anywhere.any help on this would be appricated.thanks.
1994 Chevrolet Cavalier RS 2.2L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp on VIN: 1G1JC5442R
Car came in for fuel leaking out of injectors. Replaced all four injectors. Car came back 2 day later for check engine light. Found code 45. After monitoring scan data here is what I have found. O2 sensor goes full rich at idle in or out of gear. If you rev th... Trouble codes: 45 (Rich Exhaust)
1997 Chevrolet C1500 Cheyenne 5.0L Distributor VIN: 2GCEC19M2V
Our problem has to do with the distributor. I installed it the way it came out. I thought. Motor starts and runs but has a terrific flat spot when taking off and no real power. Also the MIL came on with code 1345 which refers to incorrect distributor installat...
1999 Chevrolet Blazer 4.3L transmission VIN: 1GNDT13W5X
This vehicle was brought into our shop with a very unusual noise inside the vehicle with the engine running. Noise can best be explained as a water running thru a hose noise. It fades in after the engine is started and fades away after the engine is turned off...
2000 Chevrolet Suburban 1500 LT 5.3L Stall VIN: 3GNEC16TXY
vehicle came in with intermittent stall at stop. checked fuel pressure reading was at 50psi at idle, 46psi at 2000rpm. replaced fuel pump to no succuss, pressure is still the same. regulator when vacuum is disconnected shoots up to 58psi. looking through datab...
2001 Chevrolet Silverado 2500 6.0L Cruise VIN: 1GCGK29U71
Hi all, Chevy dealer tech's please respond. I have a customer that wants a factory cruise system added on this truck. I called Autoway and there is no kit available from factory. This customer does not want aftermarket. My question: is this possible and what p...
2002 Chevrolet Impala 3.4L starter VIN: 2G1WF55EX2
set code #1626/ will not roll over starter relay does work fuel pump fires up.Great batt/ tryed a different key no roll over.check codes just 1626
2000 GMC Jimmy Diamond Edition 4.3L 4th downshift VIN: 1GKDT13W9Y
This was a difficult one to decide which catagory to post it in. The problem goes like this, with the engine hot or cold you take off from a stop under normal driving conditions it will hick up a time or two(like a bad TPS sensor, which we ran a lab scope patt...
2003 Hummer H2 6.0L compressor ? VIN: 5GRGN23U23
Good day to all, Customer concern was a lack of air conditioning cooling ability at idle. I connected gauges and at idle the low side pressure was aprox. 65-70 psi, high side was 350 plus. Upon inspection the condenser was found to be plugged with grass seeds...
1992 Pontiac Bonneville SE 3.8L No Start VIN: 1G2H521XN1
car had a code 42 and code 58. no spark, no inj pulse, good fuel pressure. discovered three pinched wires to cam sensor gy-rd,wht-blk,brn-wht.they were all shorted to block. repaired harness.no signal from either sensor, replaced both sensors, now have signal ... Trouble codes: 42 (est)
1993 Pontiac Grand Am SE 3.3L No Start VIN: 1G2NE54N1P
Hi Group, I am stuck on this one. any insight or help of any kind will be greatly appriciated. I have this 93 pontiac grand am, with 3.3L v-6. it has no spark of any sort on any of the three coils. the first thing i tested was, the crank sensor. according to m... Trouble codes: 42 (ESC ckt grounded or faulty bypass line.)
1996 Pontiac Grand Am SE 2.4L No Start VIN: 1G2NE52TXT
HI Guys And Girls I have this 96 Grand Am it was bought from a dealer . The car was sold with a bad tranny. The key was lost and it was taken as was . I am posting this for another Shop . After the tranny was installed they tried to started and the security ...
1997 Pontiac Bonneville SE 3.8L belt noise ? VIN: 1G2HX52K3V
this is a strange one, car started making a noise that sounds just like a belt slipping about 3 weeks ago. it won't do it all the time, just every now and then. normally after being driven for 10 or 15 min. then just every once and a while, it only squeals or ...
1998 Pontiac Firebird 3.8L Poor Idle Quality, hard start VIN: 2G2FS22KOW
Hi guys!Steve at Sparks again.This time I have a Firebird that has a hard start.Cranks about 6-10 times before starting.Once it starts it runs really ruff, you have to give a lot of gas for it to smooth out.When cranking we have spark and pulse to the injector...
1999 Pontiac Grand Prix GTP 3.8L Misfire, MIL Lamp on VIN: 1G2WR5211X
hey guys, this car has come into the shop with a dead #6 cylinder & random misfire code. other cylinders are also misfiring as well. we have checked spark, fuel,egr,injectores have been removed & flow tested ok. cooling system also found to have a rusty sludge... Trouble codes: P0300
2000 Pontiac Grand Prix GTP 3.8L shifter VIN: 1G2WR5211Y
Hi guys..Got this Grand Prix here...original complaint from customer was that he could not get key out of ignition and that he could not shift from park without using shift interlock bypass. We replaced complete center console shifter assembly and now the key ...
2001 Pontiac Bonneville SLE 3.8L not sure VIN: 1G2HY54K91
This noise is a low howling just like a normal GM front wheel bearing on front wheel drive vehicles. The bearing had excessive play and I told customer he needed a new bearing/hub assembly. The brakes were worn, and did a compete brake job. Brakes are fine now...
1994 Saturn SL1 1.9L No Start, Stall VIN: 1G8ZH559XR
saturn people please help. I have had this car almost a month with no progress.The car came in with a complaint of a stall. when I got it to act up it acted as if it were runnig out of fuel. fuel pressure stayed @ 30psi, had spark ,and would blink noid light b...

Fixes & Summaries for GM
Fix/Summary Answers
1979 Cadillac DeVille 7.0L gas gauge VIN: 6D47599286
Hello:thanks for the replies,there were 12 in total,they all ranged from a poor sending unit to bad wiring connections to the possibility of a bad dash unit.After we found the 'hidden'screws,we removed the upper dash cover,we found the gauge unit is a printer ...
1999 Cadillac DeVille Concours 4.6L Traction control VIN: 1G6KF5490X
Sorry it took so long i just got hold of him and he trade car off thanks for your help
2000 Cadillac Escalade 5.7L power door locks VIN: 1GYEK63R8Y
Hi Guys The door lock inversion module was in the left side door pillar behind the rear door. I found this out by having the dealer fax me a picture with location. The problem was the door lock switch in the right rear tailgate pillar. Water got into the switc...
1987 Chevrolet R30 Custom Deluxe 7.4L Excessive Emissions, Poor Fuel Economy VIN: 1GCHR33N7H
i had 6 replies asking me to test tps,ck dip,ck vac leaks & the rest were duplicates.i went to my snap on scanner & tested all the above twice.while playing w/my snap on scanner i went to the trouble shooting guide and found that the torque converter was slipp...
1995 Chevrolet Astro CL 4.3L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy VIN: 1GNDM19W7S
Thanks for all the input. I checked the EGR this morning before starting the vehicle the pintle was not blocked or sticking open. The Central fuel unit had been leaking for so long, the vehicle needed to be run long enough and driven a few times to get it to f...
1997 Chevrolet C3500 Cheyenne 6.5L Unknown VIN: 1GCHC33F9V
everyone said batteries or alternator which we had replaced both during testing.found bad cigarette lighter. thanks for all the help.
2003 Chevrolet Silverado 2500 HD 6.0L srs VIN: IGCHK29U93
Thanks again to all who replied. After replacing the SRS Module we had to send the vehicle to dealer to have the module reprogramed.
1996 GMC K1500 Sierra SL 5.7L headlights VIN: 1GTEK19R3T
hey thanks to all that responded it turns out i was looking at the right relay in the spot where the old chevys had the fuse box the fix turned out to be the wrong relay the relay that was there was a 4 prong relay but the one that was supposed to be there was...
2001 GMC Jimmy SLE 4.3L abs light VIN: IGKDT13W51
im posting this as a fix because the customer has not come back yet i replace the wires from the vss sensor to the pcm as per tac as to the replies i had were all good but this jimmy doesn't have a sensor in the rear they use the vss sensor in the transfer cas...
2002 Oldsmobile Alero GL 3.4L starter VIN: 1G3NL52E72
hi, i haven't seen the car again, but received some replies, suggesting good possibility that the defect is in the ignition switch.
1996 Pontiac Bonneville SE 3.8L Stall VIN: 1G2HX52K1T
Thank you all for your help. We replaced the crank sensor as many of you suggested and have not had a stall since. I'm keeping my fingers crossed and sending it out. Thanks again. Best regards to all, Jack Trouble codes: 107 (MAP sensor voltage too low).
1997 Pontiac Bonneville SE 3.8L door lock VIN: 1G2HZ52K3V
Well Guys, This one is fixed! The “black box” under the dash is called the body control module and list for $80 at the dealer. Dwain wrote to me and said to check the circuit board for a break. I snapped the board out (easy) and on the back side I could see a ...
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