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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for October 10, 2017
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Open Help Requests for GM
Help Request Answers
2005 Cadillac STS 4.6L , VIN: 1G6DC67A05
this vehicle came in for a brake problem of the front rotors and brake pads worn down to 70%, one of my mechanic sold them a complete brake job with rotors, two days later this car came back with the customer stating the brakes are sticking after test driving ...
2000 Chevrolet K3500 7.4L MIL Lamp on VIN: 1GCHK33J1Y
Customer brought vehicle in to have the check engine light looked at and have the broken exhaust manifold bolts repaired. p0401 was stored as well as an egr position code and throttle position sensor code. Found that the EGR valve was inoperable and the tps ha... Trouble codes: P0401
2005 Chevrolet Tahoe LS 5.3L MIL Lamp on, No Fuel Cut At WOT VIN: 1GNEC13T35
Thank you in advance for any advise. I have this Tahoe that we replaced the PCM for an unrelated matter. Installed and programmed the reconditioned AC Delco unit with a TECH 2 through TIS2WEB. Everything went fine until I tried to do the CKP relearn. The com... Trouble codes: P0315 (CKP relearn not achieved)
2005 Chevrolet Suburban 1500 LT 5.3L Poor Idle Quality, Hesitation, Surge VIN: 1GNEC16Z75
Good afternoon fellow technicians, I've been sort of unclear on why a customer's vehicle has a slight hiccup/misfire/hesitation when it is on deceleration and it's happening more and more as of late (we thought wires could be the culprit and so we replaced th...
2007 Chevrolet Tahoe LTZ 5.3L Throttle VIN: 1GNFC13J87
Tahoe is throwing P2176 "Minimum Throttle Position not learned". Vehicle is then thrown into limp mode w/MIL present and Traction Control/Stabilitrak system turned off. Customer states that it only happens on a cold start up, but not on every cold start up. Af...
1990 GMC Safari 4.3L No Start, Misfire, backfires VIN: 1GTCM15Z1L
other tech got this car with a no start was able to limp car into shop. he sold plugs, wires, cap, rotor, and distributor...he has a parts cannon locked and loaded. replaced everything and is still the same but now I got stuck with it. both injectors are flowi...
2011 GMC Terrain SLT 2.4L MIL Lamp on VIN: 2CTFLXEC6B
this vehicle is driving me nuts. came in with a p0171 code. long term fuel trims at +35-40 all the time. no vacuum leaks found. pcv works correctly. low side fuel pressure measured correctly and high side pressure shows good on scan data. found a cracked exhau... Trouble codes: P0171
2008 Saturn Aura XR 3.6L Air Bag System VIN: 1G8ZV57718
Ran through diagnostic chart, resistance on harness to side impact sensor is below 1ohm. Replaced side impact sensor new GM part and light set again, chart then says to replace SDM module, replaced with rebuilt module. No change light still on. Only thing I no...

Fixes & Summaries for GM
Fix/Summary Answers
2003 Chevrolet Trailblazer LTZ 4.2L Valve cover VIN: 1GNDS13S23
No short cuts- remove the alternator and get with it. It wasn't a bad job, just looked like there could an easier way, but after following the suggestions it worked out.
2003 Chevrolet Impala 3.4L MIL Lamp on VIN: 2G1WF52E33
Thanks for the replies. After spending plenty of time checking power, grounds and wiring continuity between the cluster, the BCM and the PCM, I called two places that repair the clusters and verified what I thought I knew: the cluster is at the end of the comm... Trouble codes: P1626 (Anti-theft fuel enable), U1064 (Loss of comm to BCM VITDIM /or SBM data).
2004 Chevrolet Trailblazer LS 4.2L Resivior VIN: 1GNES16S24
this vehicle is fixed we found out that the return line ha collapsed inturnally
2011 Chevrolet Traverse LT 3.6L radio and amp VIN: 1GNKVGED3B
We ultimately had to replace the radio unit and problem has been resolved. Thanks for all your help.
1996 GMC Sonoma SL 2.2L Temperature actuator VIN: 1GTCS1441T
Actuator is behind glovebox topside under dash. As others replied dash has to be tilted back. The more you remove it the easier it is. The actuator is held in my ( 2 ) 5.5mm screws. Can't access screws without some patience. Took apart actuator and gear was br...
1962 Oldsmobile Starfire 6.5L power windows VIN: D209115664
Thanks for all of the replies. I was hesitant to remove the carpeting because it was custom Cheech and Chong vintage shag carpet that was glued down to the floor and kick panel, even way up the firewall beyond where factory carpet would go. After carefully pee...
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