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Prev Professional Automotive Repair Technical Discussions for November 8, 2004
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Open Help Requests for GM
Help Request Answers
1994 Buick Century Custom 3.1L Suspension VIN: 1235456612
Vibration at 65 mph and above severe in steering wheel and feels like front of vehicle, I've balanced all tire/wheels several times and calibrated machine also to no avail, we've put struts on this vehicle before the problem occured as per customer, can struts...
1995 Buick Riviera 3.8L MIL Lamp on VIN: 1G4GD2213S
Hi, thanks in advance for any help. This Riv has the service engine soon light on but there are no codes in the present code screen. The history codes are numerous (15 total). The vehicle runs perfect. By performing the clear codes option the light will stay o...
1997 Cadillac Eldorado 4.6L right marker/tail VIN: 1G6EL12Y7W
This northstar Eldorado is giving me a fit!!The only problem is LEFT side marker lights+rear tail lights do not work.all others work ie bk,turn.haz ect right+left.Just left front+rear marker/tail.Has any one had this problem?Please fill me in.I checked bulbs e...
1989 Chevrolet Astro 4.3L No Start VIN: 1GNEL19W3W
Hello all, I have a astro van that has me stumped. As stated in the repair history I have replaced the intake gasket, along with the plenum gaskets. The distributor position has been checked, rechecked and set according to chiltons. The van was running before...
1996 Chevrolet K3500 6.5L No Start VIN: 1GBJK34FXT
I bought this truck with engine already removed. I replaced crankshaft which had two spun bearings, i reinstalled engine and i have two concerns. I cannot find where CKP sensor plugs into harness. I found a connector at main harness at back of engine is their ...
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...
1983 GMC Jimmy 5.7L erratic o2 sensor VIN: 1G5EK18L3D
we have a gmc jimmy, 5.7l 4wd with o/d. the emissions are higher than i like, though it will pass ca smog testing. my concern is that i get oxygen sensor readings that vary from around .200 mv up to 1.2 mv - replaced the sensor and new e.c.m., no change. check...
1999 GMC C2500 Sierra SL 5.7L power steering VIN: 1GCGC24UOX
I am not sure on how to diag this system with hydo boost.alldata does not cover very well.any help would be apreciated.thanks in advance
2002 GMC Safari SLE 4.3L battery light VIN: 1GKDM19X52
Complaint of battery light flashing off and on. Checked output of alt. Volt and amp output are fine. Even when light is on alternator works. I looked on shop key and alt wiring goes thru ecm. There are no test proceedures to try. I don't know if it is a Comput...
1996 Pontiac Bonneville SSE 3.8L Electronic VIN: 1G2HZ5217T
i have a problem with the blower ducts. air only comes out from defrost and floor vents. no air flow from dash vents. vacuum supply and all fuses in good condition. you can change temperature, all fan speeds, ac on and off normal, just unable to blow from prop...
1997 Pontiac Grand Prix GT 3.8L engine VIN: 1G2WP52K5V
hello, need some help with a noise in upper engine on this pontiac. it sounds like a bearing in the water pump, removed belt, replaced water pump still has noise. when you remove the belt with the engine running noise still present. so we now know it is not a ...
1997 Pontiac Grand Am SE 2.4L Surge, Stall VIN: 1G2NE52T5V
this car has a restart problem. after the engine is shut off, you need to wait about 5 min to get it to act up. when it does, the engine will start but i can stall, or idle poorly searching for idle. it will do this for about 10 seconds and then, like turning ...

Fixes & Summaries for GM
Fix/Summary Answers
1989 Chevrolet S10 Blazer Sport 4.3L No Start VIN: 1GNCS18ZXK
Hello Fellow Techs, Thank you for the responses I received. Some of the responses were as follows: look for a hidden kill switch that was accidentally tripped, check the grounds from the body to the engine, rebuilding the distributor using Delco parts and a ...
1989 Chevrolet C1500 Cheyenne 5.7L broken line VIN: IGCDCI4K0K
pressure bled system from master to rear( low pressure air on adapter mounted to m/c reservoir. differential switch centered up and we bled the rear brakes. hope this helps someone . thanks for the imput. dave
1995 Chevrolet S10 4.3L Misfire, MIL Lamp on, VIN: 1GCCT19W6T
We cant get the customer to give up his truck long enough to pull the distributor but I am thinking from all the info you guys sent me that we are on the right track with a worn distributor gear and/or just being out of time.Its tough to fix em when we cant ge... Trouble codes: P0300.
1995 Chevrolet Lumina 3.1L Stall VIN: 2G1WL52M5S
Sorry it took so long to post fix, customer hold up. A new PCM fixed vehicle, injector driver fault. Injectors had no shorts and harness was good, I had stated no codes in post, lots asked if had security code. Noid light was going out when running engine with...
1998 Chevrolet c7500 7.0L no throttle VIN: 1GBL7H1M8W
thanks for the help.removed throttle body & inspected bore&plates,too much clearance for bores to contract&stick plates.cleaned shaft w\carb spray&turned stop screw 1/4 turn in anyway.drove 2 days problem never reappeared.hope that did it, i sent it on its way...
1999 Chevrolet Silverado 1500 4.3L MIL Lamp on VIN: 1GCEC14WXX
Well several hit it right on the head, apparently some vehicles must have oem converters.I replaced both converters and the crossover with parts from our local dealer and everything was fine.As far as my readings on the right side goes it was a software issue ... Trouble codes: P0420 (poor catalyst bank one).
2001 Chevrolet Impala 3.4L ignition/starter VIN: 2G1WF55E01
Thanks to all that helped. It appears that the continue crank is normal on new GM. we replaced the starter for the intermitent no start and customer is very happy..thanks again
2001 Chevrolet Silverado 2500 6.0L Vibration VIN: 1GCHK29U31
We checked run out on drive line, and found .030 inch, called drive line shop. they said it was ok, we then decided it wasn't ok and installed a new drive line, and it corrected the problem. Thank you to all that replied. Hope this helps anyone in the future.
1997 Pontiac Grand Prix GT 3.8L valvetrain ? VIN: 1G2WP12K7V
Thanks to all that helped on this one! Thanks to Dennis, Doug, Elmo, Josh, Christopher, Michael, and Dale. The problem was the lifters, the customer wanted to gamble, replaced all lifters, lubed them generously, fired it up and all is quiet. Had replies that w...
1998 Saturn SL2 1.9L MIL Lamp on VIN: 1382J5272W
MANY THANKS TO ALL WHO HAVE RESPONDED. The owner is saving up her tip money to purchase the evap. solenoid, which is mounted under the intake manifold. I checked electric signals, crimped lines, lack of vacuum supply which were suggested as problem areas. The ... Trouble codes: P0440.
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