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Prev Professional Automotive Repair Technical Discussions for November 9, 2004
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Open Help Requests for GM
Help Request Answers
1984 Buick Regal 3.8L shift points VIN: 164AK47961
Well I think we have a bad lock up solinoid. But this thing also shifts great when cold after 30 to 40 miles it shifts up too early even at wot. I was thinking maby some varnish in the valve body from all the years sitting in the garage. Is there a kit we can ...
1990 Cadillac Fleetwood 4.5L MIL Lamp on VIN: 1G6CB5339L
Does anyone remember Cadillac on board diag?, have this one with intermitant "SVC ENG SOON" and "SVC VEH SOON" teltale lamps coming on and off, not always at the same time.The body module sets code F32,serial data problem,1st, then, PCM code E47 sets, both as ... Trouble codes: F32 (BCM codeBCM-PCM data problem), E47 (PCM/ECM codeBCM-ECM data problem)
1989 Chevrolet C1500 Cheyenne 5.0L Cuts out, Stall, Misfire VIN: 2GCDC14H4K
When the truck gets hot it stalls or runs rough as soon as it comes off idle.A vacuum guage shows 18 inches at the EGR just as the throttle is applied. If anyone has seen this before and has some info that would be greatly appreciated. Thanks Joe [...]
1990 Chevrolet G30 Chevy Van 5.7L No Start, Stall VIN: 2GAGG39KL4
this van came in for a tune up. original problem was long crank times before start up and poor gas mileage. after scanning for codes and watching scanner while running it was clear that the cts was reading incorrectly and the o2 sensor was fixed at .04 volts. ... Trouble codes: 44 (o2 sensor), 42 (est)
1994 Chevrolet Corvette 5.7L right cooling fan VIN: 1G1YY22P8R
THe right side (secondary)cooling fan is inoperative. When the a/c is engaged, only the primary fan turns on. THe secondary fan works when tested with a jumper wire, but there is no signal from the ECM. There is no ground signal from the ECM to the fan relay. ...
1996 Chevrolet C2500 Cheyenne 6.5L Stall VIN: 1GTGK29F5T
This 96 diesel has an intermitent stall when cold weather comes around.In the warmer months there is no problem.It just started getting cold the last couple of days here in TN and the problem problem is starting to show up again like it did this time last year...
1996 Chevrolet C3500 Cheyenne 7.4L Hesitation, Surge VIN: 1GCHC33J7T
this truck has a bad hesitation on light acceleration,hard accel seen fine.I have noticed a surge in engine speed between 700-830 rpm both in and out of gear just off idle none after or lower,the surge also happens as the trans down shifts into 1st gear when c...
1997 Chevrolet Cavalier 2.2L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp on VIN: 3G1JF5245Y
This came in with compaint of Had Coolant Flush done NOW it runs poorly.. scan & found two codes.4 gas readings real high - repaired rear o2 connection , repaired pcv leak.. Then I was at the ecm (in rf facia under rf fender well)to start checking ecm grounds ... Trouble codes: P0140 (Bank 1 Sensor 2- Low activity), P1171 (Lean during Acceration)
1999 Chevrolet K1500 Suburban 5.7L Misfire VIN: 3GNFK16R1X
hello fellow technicians, We have a 1999 k1500 Suburban with a 5.7Liter engine that has bee a real bear for the past 6 weeks. The original complaint was a P0305 misfire # 5 cylinder that "their mechanic could not fix. After going through the ringer on this o...
2001 Chevrolet Corvette 5.7L charging system, dash board info center VIN: 1G1YY22GX1
When starting this vehicle the alternator would spike to 15 volts and some times spike to 18 volts. After you start to drive the vehicle the info center would loose power than all of the gauges would stop working. This does not cause a no start. We changed the...
2002 Chevrolet Cavalier 2.2L No Start, Stall VIN: 1G1JC12442
intermittent dies, will start & die, @ that point but losses fuel gauge,radio,chimes & all idiot lights but still has s.e.s. light, odometer,t/signals,wipers & blower. will not act up for tech, checked for bad grounds & powers-none found,also ckd/replaced ign....
2003 Chevrolet Silverado 3500 6.6L Poor Fuel Economy, fuel in crankcase VIN: 1GCJK33103
I was wondering if anyone has heard or knows of a problem with duramax fuel injectors. This my personal vehicle , still covered under warranty. Fuel mileage dropped as did power suddenly, dealer states that it will take 6 weeks to get injectors as chevrolet is...
1998 GMC Jimmy Envoy 4.3L HID headlamps
Have one headlamp that will not light but does flicker when trying to start-up. The information that we do have suggests that the ballast will shut down if the voltage required to maintain lamp operation after initial start-up is above 600 volts ac. We were wi...
1988 Oldsmobile Cutlass Ciera Brougham 3.8L Poor Idle Quality, Hesitation, Stall VIN: 2G3AM5133J
hi guys thanks in advance car came in with complaint dieing at stop signs & chuging on take off some times. had bad maf airflow installed reman a-1 cardone also bfeore replacing maf when cold start up & die sometimes other times idle high a while as coming don...
1988 Oldsmobile Cutlass Ciera SL 3.8L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall VIN: 2G3AM1135J
This oldsmobile will start up cold, have a nice high idle and when it settles down to base idle speed it dies. It will start right back up and repeat the process about five or six times until it is warming up. If the throttle is kept open, it will stay running...
1994 Oldsmobile Cutlass Supreme S 3.1L Spider Gears Broken VIN: 1G3WH15M7R
Hello All Thanks for taking the time to read this. This is the 2nd trans in this car that has cracked the case extrension. The spider gears broke and came thru the side of the case. this is the same thing that happened to the original trans. I think the driv...
1994 Oldsmobile 98 Regency Elite 3.8L alternator VIN: 1G3CW52L5R
Hi guys - I have this 94 olds 98 3.8L (non supercharged) which stops charging. This condition is present only at idle with transmission in gear (park or reverse). The vehicle will charge at around 13.7-14.2 volts and then drop instantly to 12 or 11 volts. The ...
1996 Pontiac Grand Am SE 3.1L no start VIN: 1G2NES2M2T
I know that I am just missing something, but after installing used engine. Will not turn over, removed and tested starter, check all wiring connections. Check for codes. None. Tried resetting key, for alarm system. When key turned to start postion, no lights d...
1997 Pontiac Trans Sport 3.4L Misfire VIN: 1GMDX03E8V
hello all,this vehicle has a constant misfire on cyl.#1.i checked compression it is 150,it has spark,it has fuel.no vac.leaks,i pulled the valve covers and the valve springs look good the rockers look good and work properly,of course i wouldnt have comp.if the... Trouble codes: P0300

Fixes & Summaries for GM
Fix/Summary Answers
1999 Chevrolet Metro 1.0L fuel injector VIN: 2C1MR226XX
It ended up being a fuel injector resistance relay. Located on the D/S fire wall. Thanks for all your help.
2001 Chevrolet Silverado 2500 HD 6.0L engine VIN: 1CG1C25U2X
Thanks to the guys 'in the know' who responded! Most said the pan gasket would fix the problem and you were correct! KUDOS!
2002 Chevrolet Silverado 3500 6.6L fuel gauge VIN: 1GCJK33142
The in tank sending unit was the most common response. We installed a new one and all is well. Thanks to every one.
1996 GMC K2500 Suburban 7.4L Poor Idle Quality, Hesitation, Misfire VIN: 3GKGK26J5T
first off i would like to thank everyone for your support. This vehicle was a head ache and now we can effectively say it is over. I had several responses to this vehicle with thoughts of vacuum leaks. which is were i was headed but was not able to verify this...
1999 GMC C2500 Sierra SL 5.7L power steering VIN: 1GCGC24UOX
thanks for all the help.the problem was in the ps steering pump. replaced gian and was fine.i did pull the pressure line off and started engine no pressure.thanks agian gary
1996 Pontiac Grand Am SE 3.1L cluster VIN: 1G2NE52M7T
2 replys said poss. ign. switch.cust. need care back and to worried about putting more mony into the car.
1997 Pontiac Grand Am SE 2.4L Surge, Stall VIN: 1G2NE52T5V
Thanks to all who replied. I checked the fuel pressure regulator several times and it was always dry and the system never seemed to lose any pressure unless it sat overnight. Due to so many that replied that it was the regulator, I rechecked it using my exh ga...
1997 Pontiac Grand Prix GT 3.8L engine VIN: 1G2WP52K5V
hello everyone, thanks for all your help. problem solved it was a combination of a cracked upper plenum gasket and missing o-ring that goes on the pcv valve. thanks again for evryone's help brett [...]
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