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Prev Professional Automotive Repair Technical Discussions for May 19, 2005
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Open Help Requests for GM
Help Request Answers
1990 Buick Century Custom 3.3L No Start, Cuts out, Stall VIN: 3G4AH54N7L
have checked and double checked, customer replaced all sensors, fuel pump, pressure regulater, maf, computer. fuel pressure good, car TRYS TO START, SOMETIMES RUNS for 5 sec, other times not at all, sometimes backfires when stopping, acts like fuel but has vol...
1997 Buick LeSabre Custom 3.8L Misfire, MIL Lamp on VIN: 1G4HP52K9V
This one has A simple fix that is avoiding us. there is a code P0300 (misfire) with a clear indication on the scanner showing cylinder #1 is missing. The counter keeps in sink with the feel of a miss in the engine along with a slight surge and will count to 20... Trouble codes: 0300 (misfire)
1994 Cadillac Eldorado Touring 4.6L shifting VIN: 1G6ET1299R
thanks in advance for any help, we have this cadillac that is having a shifting problem it came in with a harsh shift and check engine light on, the compuetr had two codes for po076 for the preasure solenoid and po086 undifined gear ratio we found a loose conn...
1995 Cadillac Seville SLS 4.6L engine VIN: 1G6KS52Y1S
thanks for any help on this. has anyone seen any common problems for leaks on these? has coolant & oil leaking between engine & transmission. i have spent quite a bit of time trying to find the source of the leak. from what i can see {which is not much)it does...
1966 Chevrolet Corvette 5.4L Excessive Emissions, Cuts out, Misfire
Looking for some help, I must be missing something, problem is, car starts and runs great at an idle and upto about 3200rpm's...After 3200, it begins to run very poor, popping, losing power, missing??, it seems to be "rich", if it runs for too long, it fouls t...
1988 Chevrolet Sportvan G30 5.7L Poor Idle Quality, Stall
Van runs well when warmed up but has no fast idle cold. Watched the IAC on the scanner and it was being commanded to 145 counts, but you could look in the throttle body and see that the pintle was all the way closed resulting in a very low idle and stalling. R...
1988 Chevrolet P30 Motorhom 7.4L Engine VIN: 1GBKP37W4J
This motorhome came to us with a knock in the motor. I suggested to the customer that it was a lower engine knock near #6 cylinder. Customer wanted me to check for lifters because he said noise went away under acceleration or increased rpm in park. Pulled valv...
1990 Chevrolet Caprice 5.0L MIL Lamp on VIN: 1G1BL53E2M
This Caprice came in with a Egr mil lamp on and a spark knock complaint and anti lock light after clearing the codes egr returned. Clean egr and reinstalled no better. Set the idle Iaw mitchell it was at 2100 rpm customer had replace idle valve without resetti...
1994 Chevrolet Beretta Z26 3.1L Hesitation, Surge, Poor Fuel Economy, MIL Lamp on VIN: 1G1LW15M5R
Hello all, we need some big time help with this one. We've had it for two months on and off with no avial. What happens is the vehicle jerks at cruising speed just like when the spark plug wires are bad, although less noticable then a dead misfire. When the Be... Trouble codes: 44 (Fuel system lean)
1998 Chevrolet C1500 Cheyenne 5.7L brake pedal VIN: 1GCEC19R0W
(FOUR WHEEL ABS)truck came in for soft pedal.frt. brakes were worn out ,so did brake job, rears good and adjustment good,pedal feel did not change. checked out arcives and mremoved rubber plugs from abs unit incerted a paper clip to check for bad accumulators-...
2002 Chevrolet Suburban 1500 LT 5.3L pasenger front seat VIN: 1GNFK16Z42
this noise is driving me nuts. only when pasenger seat is occupied is the noise there. it could be a 50lbs child or 200 lbs adult. the seat has a cracking noise when accl or braked. it feels like its coming from the seat back. it went away for a day when i lub...
2002 Chevrolet Impala 3.4L Inst Clust,Radio,Starter,A/C comp VIN: 2G1WF55E52
Customer has been having this problem very intermittently for approximately 2 months. Very rarely, car will do several intermittend electrical things. At times, IPC(cluster), Radio, and A/C compressor will not come on but car will start and heater/A/C fan will...
1998 GMC Safari SL 4.3L No Start VIN: 1GDDM19WB5
We got this van after the owner couldn't get it to start. He had installed a new Ignition Mod. and crank sensor. It died backing out of his drive he put gas in think maybe that was the problem. We checked the codes! Nothing there. It's getting no fire to the p...
1999 GMC Savana 1500 5.7L steering shaft VIN: 1GDFG15R5X
steering nosie in sterring shaft when turing 1/2 -3/4 turns if you hold the shaft with light pressure noise goes away tried to lube shaft and rag joint connection, also sprayed lube from inside car down shaft under rubber cover slight touching shaft will elima...
2003 GMC Sierra 1500 SLE 4.3L airbag VIN: 1GTEK14X23
I have this truck that was in a minor crash but the drivers side airbag went off,will ihave to change the module+the clocksping any help would be great
1995 Oldsmobile Cutlass Supreme 3.4L timing belt VIN: 1G3WT32S2S
this car came in with the belt jumped time due to a bad idler pulley bearing. what are the chances of bent valves and what will be the easiest way to check if valves are bent if that is a possibility.
1999 Pontiac Grand Prix GT 3.8L oil pressure VIN: 1G2WP52K5X
Hey guy's I need some help here. I have 99 Grand Prix with a 3800 with no oil pressure at idle and 60psi at 3000rpm. This vehicle came in with a lifter tick, found 1 lifter bad and replaced the set. After 3 days the customer calls me and says it has another no...
2001 Saturn L300 3.0L Lighting VIN: 1G8JW52RX1
Hello Everyone, Thanks again for all that who are helping us out on this one. We have an intermittent problem with the interior lights, daytime running lights, and the traction control indicator light flickering at times. It would be sitting there at idle and...

Fixes & Summaries for GM
Fix/Summary Answers
1997 Chevrolet C1500 Cheyenne 5.7L MIL Lamp on VIN: 2GCEC19R9V
the dealership said that these codes were the result of bad catalytic converters so he had them replaced under warranty and have not seen the truck returned so i do not know if the truck is indeed fixed (highly doubt) Trouble codes: P0172 (bank 1 indicates rich), P0175 (bank 2 indicates rich), P0102 (mass airflow signal low).
1998 Chevrolet C1500 Cheyenne 5.7L Mechanical VIN: 2GCEC19MXW
Hi everybody.Iwould like to thank veryone who replied to my post. Also I would like to thank personally Ron [...] who hit it righton the nail.The fix was some previous mechanic who worked on the truck hooked up the outlet and the inlet on the condenser back...
2002 Chevrolet Venture LS 3.4L no shift, ses light on VIN: 1GNDX03E82
The short turned out to be a bare wire within the harness that is actually routed outside the loom (im talking the whole loom)and all taped up on the outside of the loom but shorted on a bracket. Real bright GM. Looks like an after thought on GM's part. Watch ...
2003 Chevrolet Silverado 1500 5.3L MIL Lamp on VIN: 1GKEK19T83
the pressure sensor had gone south. the code was for a large leak but the tank was building pressure! the system thought the leak was relieving the pressure but actually the pressure could not be 'seen' so it was interpreted as a leak. what was wrong with th... Trouble codes: P0455 (i dunno).
1995 Oldsmobile 88 Royale 3.8L fuel injection VIN: 1G3HN52K1S
alot of replies for keys but keys tested good all the way to passkey control module. Special thanks to Lloyd who sent some great information connect scope to passkey signal wire A3 to engine control module fnd the 50htz signal fnd engine control module flty pi...
1996 Pontiac Grand Am SE 2.4L p1629 VIN: 1G2NE52T0T
Well guys and gals. I'm going to call this one fixed. I haven't heard back from the customer, so that's a plus. I didn't get much help on this one although 5 of you did have some suggestions. Most of which I had already tried. I think that I mentioned in my fi...
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